Mercurial > sdl-ios-xcode
annotate src/stdlib/SDL_malloc.c @ 1675:d33dcfc3fde7 SDL-1.3
Overlay functions are being replaced by YUV textures.
If the driver doesn't support YUV textures, they can be emulated by backing
the texture with an RGB texture and using the software conversion routines.
Note that it doesn't make sense to lock a portion of a YV12 texture, since
you'd need to return three pixel pointers and pitch values instead of the
one that's available through the API. I'm guessing that's one of the reasons
DirectX 9 doesn't support this format at all.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 11 Jun 2006 07:30:16 +0000 |
| parents | 4da1ee79c9af |
| children |
| rev | line source |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 Sam Lantinga |
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4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
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9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Lesser General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 #include "SDL_config.h" |
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23 |
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24 /* This file contains portable memory management functions for SDL */ |
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25 |
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26 #include "SDL_stdinc.h" |
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27 |
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28 #ifndef HAVE_MALLOC |
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29 |
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30 #define LACKS_SYS_TYPES_H |
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31 #define LACKS_STDIO_H |
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32 #define LACKS_STRINGS_H |
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33 #define LACKS_STRING_H |
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34 #define LACKS_STDLIB_H |
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35 #define ABORT |
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36 |
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37 /* |
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38 This is a version (aka dlmalloc) of malloc/free/realloc written by |
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39 Doug Lea and released to the public domain, as explained at |
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40 http://creativecommons.org/licenses/publicdomain. Send questions, |
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41 comments, complaints, performance data, etc to dl@cs.oswego.edu |
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42 |
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43 * Version 2.8.3 Thu Sep 22 11:16:15 2005 Doug Lea (dl at gee) |
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44 |
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45 Note: There may be an updated version of this malloc obtainable at |
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46 ftp://gee.cs.oswego.edu/pub/misc/malloc.c |
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47 Check before installing! |
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48 |
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49 * Quickstart |
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50 |
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51 This library is all in one file to simplify the most common usage: |
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52 ftp it, compile it (-O3), and link it into another program. All of |
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53 the compile-time options default to reasonable values for use on |
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54 most platforms. You might later want to step through various |
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55 compile-time and dynamic tuning options. |
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56 |
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57 For convenience, an include file for code using this malloc is at: |
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58 ftp://gee.cs.oswego.edu/pub/misc/malloc-2.8.3.h |
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59 You don't really need this .h file unless you call functions not |
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60 defined in your system include files. The .h file contains only the |
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61 excerpts from this file needed for using this malloc on ANSI C/C++ |
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62 systems, so long as you haven't changed compile-time options about |
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63 naming and tuning parameters. If you do, then you can create your |
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64 own malloc.h that does include all settings by cutting at the point |
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65 indicated below. Note that you may already by default be using a C |
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66 library containing a malloc that is based on some version of this |
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67 malloc (for example in linux). You might still want to use the one |
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68 in this file to customize settings or to avoid overheads associated |
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69 with library versions. |
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70 |
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71 * Vital statistics: |
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72 |
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73 Supported pointer/size_t representation: 4 or 8 bytes |
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74 size_t MUST be an unsigned type of the same width as |
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75 pointers. (If you are using an ancient system that declares |
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76 size_t as a signed type, or need it to be a different width |
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77 than pointers, you can use a previous release of this malloc |
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78 (e.g. 2.7.2) supporting these.) |
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79 |
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80 Alignment: 8 bytes (default) |
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81 This suffices for nearly all current machines and C compilers. |
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82 However, you can define MALLOC_ALIGNMENT to be wider than this |
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83 if necessary (up to 128bytes), at the expense of using more space. |
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84 |
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85 Minimum overhead per allocated chunk: 4 or 8 bytes (if 4byte sizes) |
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86 8 or 16 bytes (if 8byte sizes) |
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87 Each malloced chunk has a hidden word of overhead holding size |
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88 and status information, and additional cross-check word |
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89 if FOOTERS is defined. |
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90 |
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91 Minimum allocated size: 4-byte ptrs: 16 bytes (including overhead) |
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92 8-byte ptrs: 32 bytes (including overhead) |
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93 |
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94 Even a request for zero bytes (i.e., malloc(0)) returns a |
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95 pointer to something of the minimum allocatable size. |
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96 The maximum overhead wastage (i.e., number of extra bytes |
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97 allocated than were requested in malloc) is less than or equal |
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98 to the minimum size, except for requests >= mmap_threshold that |
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99 are serviced via mmap(), where the worst case wastage is about |
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100 32 bytes plus the remainder from a system page (the minimal |
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101 mmap unit); typically 4096 or 8192 bytes. |
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102 |
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103 Security: static-safe; optionally more or less |
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104 The "security" of malloc refers to the ability of malicious |
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105 code to accentuate the effects of errors (for example, freeing |
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106 space that is not currently malloc'ed or overwriting past the |
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107 ends of chunks) in code that calls malloc. This malloc |
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108 guarantees not to modify any memory locations below the base of |
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109 heap, i.e., static variables, even in the presence of usage |
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110 errors. The routines additionally detect most improper frees |
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111 and reallocs. All this holds as long as the static bookkeeping |
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112 for malloc itself is not corrupted by some other means. This |
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113 is only one aspect of security -- these checks do not, and |
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114 cannot, detect all possible programming errors. |
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115 |
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116 If FOOTERS is defined nonzero, then each allocated chunk |
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117 carries an additional check word to verify that it was malloced |
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118 from its space. These check words are the same within each |
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119 execution of a program using malloc, but differ across |
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120 executions, so externally crafted fake chunks cannot be |
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121 freed. This improves security by rejecting frees/reallocs that |
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122 could corrupt heap memory, in addition to the checks preventing |
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123 writes to statics that are always on. This may further improve |
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124 security at the expense of time and space overhead. (Note that |
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125 FOOTERS may also be worth using with MSPACES.) |
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126 |
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127 By default detected errors cause the program to abort (calling |
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128 "abort()"). You can override this to instead proceed past |
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129 errors by defining PROCEED_ON_ERROR. In this case, a bad free |
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130 has no effect, and a malloc that encounters a bad address |
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131 caused by user overwrites will ignore the bad address by |
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132 dropping pointers and indices to all known memory. This may |
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133 be appropriate for programs that should continue if at all |
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134 possible in the face of programming errors, although they may |
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135 run out of memory because dropped memory is never reclaimed. |
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136 |
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137 If you don't like either of these options, you can define |
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138 CORRUPTION_ERROR_ACTION and USAGE_ERROR_ACTION to do anything |
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139 else. And if if you are sure that your program using malloc has |
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140 no errors or vulnerabilities, you can define INSECURE to 1, |
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141 which might (or might not) provide a small performance improvement. |
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142 |
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143 Thread-safety: NOT thread-safe unless USE_LOCKS defined |
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144 When USE_LOCKS is defined, each public call to malloc, free, |
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145 etc is surrounded with either a pthread mutex or a win32 |
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146 spinlock (depending on WIN32). This is not especially fast, and |
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147 can be a major bottleneck. It is designed only to provide |
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148 minimal protection in concurrent environments, and to provide a |
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149 basis for extensions. If you are using malloc in a concurrent |
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150 program, consider instead using ptmalloc, which is derived from |
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151 a version of this malloc. (See http://www.malloc.de). |
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152 |
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153 System requirements: Any combination of MORECORE and/or MMAP/MUNMAP |
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154 This malloc can use unix sbrk or any emulation (invoked using |
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155 the CALL_MORECORE macro) and/or mmap/munmap or any emulation |
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156 (invoked using CALL_MMAP/CALL_MUNMAP) to get and release system |
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157 memory. On most unix systems, it tends to work best if both |
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158 MORECORE and MMAP are enabled. On Win32, it uses emulations |
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159 based on VirtualAlloc. It also uses common C library functions |
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160 like memset. |
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161 |
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162 Compliance: I believe it is compliant with the Single Unix Specification |
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163 (See http://www.unix.org). Also SVID/XPG, ANSI C, and probably |
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164 others as well. |
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165 |
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166 * Overview of algorithms |
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167 |
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168 This is not the fastest, most space-conserving, most portable, or |
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169 most tunable malloc ever written. However it is among the fastest |
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170 while also being among the most space-conserving, portable and |
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171 tunable. Consistent balance across these factors results in a good |
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172 general-purpose allocator for malloc-intensive programs. |
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173 |
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174 In most ways, this malloc is a best-fit allocator. Generally, it |
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175 chooses the best-fitting existing chunk for a request, with ties |
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176 broken in approximately least-recently-used order. (This strategy |
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177 normally maintains low fragmentation.) However, for requests less |
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178 than 256bytes, it deviates from best-fit when there is not an |
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179 exactly fitting available chunk by preferring to use space adjacent |
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180 to that used for the previous small request, as well as by breaking |
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181 ties in approximately most-recently-used order. (These enhance |
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182 locality of series of small allocations.) And for very large requests |
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183 (>= 256Kb by default), it relies on system memory mapping |
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184 facilities, if supported. (This helps avoid carrying around and |
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185 possibly fragmenting memory used only for large chunks.) |
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186 |
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187 All operations (except malloc_stats and mallinfo) have execution |
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188 times that are bounded by a constant factor of the number of bits in |
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189 a size_t, not counting any clearing in calloc or copying in realloc, |
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190 or actions surrounding MORECORE and MMAP that have times |
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191 proportional to the number of non-contiguous regions returned by |
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192 system allocation routines, which is often just 1. |
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193 |
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194 The implementation is not very modular and seriously overuses |
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195 macros. Perhaps someday all C compilers will do as good a job |
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196 inlining modular code as can now be done by brute-force expansion, |
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197 but now, enough of them seem not to. |
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198 |
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199 Some compilers issue a lot of warnings about code that is |
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200 dead/unreachable only on some platforms, and also about intentional |
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201 uses of negation on unsigned types. All known cases of each can be |
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202 ignored. |
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203 |
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204 For a longer but out of date high-level description, see |
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205 http://gee.cs.oswego.edu/dl/html/malloc.html |
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206 |
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207 * MSPACES |
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208 If MSPACES is defined, then in addition to malloc, free, etc., |
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209 this file also defines mspace_malloc, mspace_free, etc. These |
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210 are versions of malloc routines that take an "mspace" argument |
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211 obtained using create_mspace, to control all internal bookkeeping. |
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212 If ONLY_MSPACES is defined, only these versions are compiled. |
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213 So if you would like to use this allocator for only some allocations, |
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214 and your system malloc for others, you can compile with |
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215 ONLY_MSPACES and then do something like... |
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216 static mspace mymspace = create_mspace(0,0); // for example |
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217 #define mymalloc(bytes) mspace_malloc(mymspace, bytes) |
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218 |
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219 (Note: If you only need one instance of an mspace, you can instead |
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220 use "USE_DL_PREFIX" to relabel the global malloc.) |
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221 |
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222 You can similarly create thread-local allocators by storing |
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223 mspaces as thread-locals. For example: |
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224 static __thread mspace tlms = 0; |
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225 void* tlmalloc(size_t bytes) { |
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226 if (tlms == 0) tlms = create_mspace(0, 0); |
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227 return mspace_malloc(tlms, bytes); |
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228 } |
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229 void tlfree(void* mem) { mspace_free(tlms, mem); } |
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230 |
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231 Unless FOOTERS is defined, each mspace is completely independent. |
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232 You cannot allocate from one and free to another (although |
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233 conformance is only weakly checked, so usage errors are not always |
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234 caught). If FOOTERS is defined, then each chunk carries around a tag |
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235 indicating its originating mspace, and frees are directed to their |
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236 originating spaces. |
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237 |
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238 ------------------------- Compile-time options --------------------------- |
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239 |
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240 Be careful in setting #define values for numerical constants of type |
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241 size_t. On some systems, literal values are not automatically extended |
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242 to size_t precision unless they are explicitly casted. |
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243 |
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244 WIN32 default: defined if _WIN32 defined |
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245 Defining WIN32 sets up defaults for MS environment and compilers. |
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246 Otherwise defaults are for unix. |
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247 |
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248 MALLOC_ALIGNMENT default: (size_t)8 |
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249 Controls the minimum alignment for malloc'ed chunks. It must be a |
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250 power of two and at least 8, even on machines for which smaller |
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251 alignments would suffice. It may be defined as larger than this |
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252 though. Note however that code and data structures are optimized for |
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253 the case of 8-byte alignment. |
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254 |
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255 MSPACES default: 0 (false) |
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256 If true, compile in support for independent allocation spaces. |
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257 This is only supported if HAVE_MMAP is true. |
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258 |
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259 ONLY_MSPACES default: 0 (false) |
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260 If true, only compile in mspace versions, not regular versions. |
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261 |
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262 USE_LOCKS default: 0 (false) |
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263 Causes each call to each public routine to be surrounded with |
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264 pthread or WIN32 mutex lock/unlock. (If set true, this can be |
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265 overridden on a per-mspace basis for mspace versions.) |
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266 |
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267 FOOTERS default: 0 |
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268 If true, provide extra checking and dispatching by placing |
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269 information in the footers of allocated chunks. This adds |
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270 space and time overhead. |
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271 |
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272 INSECURE default: 0 |
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273 If true, omit checks for usage errors and heap space overwrites. |
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274 |
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275 USE_DL_PREFIX default: NOT defined |
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276 Causes compiler to prefix all public routines with the string 'dl'. |
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277 This can be useful when you only want to use this malloc in one part |
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278 of a program, using your regular system malloc elsewhere. |
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279 |
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280 ABORT default: defined as abort() |
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281 Defines how to abort on failed checks. On most systems, a failed |
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282 check cannot die with an "assert" or even print an informative |
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283 message, because the underlying print routines in turn call malloc, |
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284 which will fail again. Generally, the best policy is to simply call |
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285 abort(). It's not very useful to do more than this because many |
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286 errors due to overwriting will show up as address faults (null, odd |
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287 addresses etc) rather than malloc-triggered checks, so will also |
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288 abort. Also, most compilers know that abort() does not return, so |
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289 can better optimize code conditionally calling it. |
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290 |
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291 PROCEED_ON_ERROR default: defined as 0 (false) |
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292 Controls whether detected bad addresses cause them to bypassed |
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293 rather than aborting. If set, detected bad arguments to free and |
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294 realloc are ignored. And all bookkeeping information is zeroed out |
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295 upon a detected overwrite of freed heap space, thus losing the |
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296 ability to ever return it from malloc again, but enabling the |
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297 application to proceed. If PROCEED_ON_ERROR is defined, the |
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298 static variable malloc_corruption_error_count is compiled in |
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299 and can be examined to see if errors have occurred. This option |
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300 generates slower code than the default abort policy. |
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301 |
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302 DEBUG default: NOT defined |
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303 The DEBUG setting is mainly intended for people trying to modify |
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304 this code or diagnose problems when porting to new platforms. |
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305 However, it may also be able to better isolate user errors than just |
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306 using runtime checks. The assertions in the check routines spell |
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307 out in more detail the assumptions and invariants underlying the |
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308 algorithms. The checking is fairly extensive, and will slow down |
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309 execution noticeably. Calling malloc_stats or mallinfo with DEBUG |
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310 set will attempt to check every non-mmapped allocated and free chunk |
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311 in the course of computing the summaries. |
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312 |
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313 ABORT_ON_ASSERT_FAILURE default: defined as 1 (true) |
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314 Debugging assertion failures can be nearly impossible if your |
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315 version of the assert macro causes malloc to be called, which will |
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316 lead to a cascade of further failures, blowing the runtime stack. |
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317 ABORT_ON_ASSERT_FAILURE cause assertions failures to call abort(), |
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318 which will usually make debugging easier. |
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319 |
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320 MALLOC_FAILURE_ACTION default: sets errno to ENOMEM, or no-op on win32 |
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321 The action to take before "return 0" when malloc fails to be able to |
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322 return memory because there is none available. |
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323 |
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324 HAVE_MORECORE default: 1 (true) unless win32 or ONLY_MSPACES |
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325 True if this system supports sbrk or an emulation of it. |
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326 |
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327 MORECORE default: sbrk |
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328 The name of the sbrk-style system routine to call to obtain more |
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329 memory. See below for guidance on writing custom MORECORE |
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330 functions. The type of the argument to sbrk/MORECORE varies across |
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331 systems. It cannot be size_t, because it supports negative |
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332 arguments, so it is normally the signed type of the same width as |
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333 size_t (sometimes declared as "intptr_t"). It doesn't much matter |
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334 though. Internally, we only call it with arguments less than half |
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335 the max value of a size_t, which should work across all reasonable |
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336 possibilities, although sometimes generating compiler warnings. See |
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337 near the end of this file for guidelines for creating a custom |
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338 version of MORECORE. |
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339 |
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340 MORECORE_CONTIGUOUS default: 1 (true) |
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341 If true, take advantage of fact that consecutive calls to MORECORE |
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342 with positive arguments always return contiguous increasing |
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343 addresses. This is true of unix sbrk. It does not hurt too much to |
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344 set it true anyway, since malloc copes with non-contiguities. |
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345 Setting it false when definitely non-contiguous saves time |
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346 and possibly wasted space it would take to discover this though. |
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347 |
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348 MORECORE_CANNOT_TRIM default: NOT defined |
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349 True if MORECORE cannot release space back to the system when given |
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350 negative arguments. This is generally necessary only if you are |
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351 using a hand-crafted MORECORE function that cannot handle negative |
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352 arguments. |
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353 |
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354 HAVE_MMAP default: 1 (true) |
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355 True if this system supports mmap or an emulation of it. If so, and |
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356 HAVE_MORECORE is not true, MMAP is used for all system |
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357 allocation. If set and HAVE_MORECORE is true as well, MMAP is |
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358 primarily used to directly allocate very large blocks. It is also |
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359 used as a backup strategy in cases where MORECORE fails to provide |
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360 space from system. Note: A single call to MUNMAP is assumed to be |
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361 able to unmap memory that may have be allocated using multiple calls |
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362 to MMAP, so long as they are adjacent. |
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363 |
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364 HAVE_MREMAP default: 1 on linux, else 0 |
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365 If true realloc() uses mremap() to re-allocate large blocks and |
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366 extend or shrink allocation spaces. |
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367 |
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368 MMAP_CLEARS default: 1 on unix |
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369 True if mmap clears memory so calloc doesn't need to. This is true |
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370 for standard unix mmap using /dev/zero. |
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371 |
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372 USE_BUILTIN_FFS default: 0 (i.e., not used) |
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373 Causes malloc to use the builtin ffs() function to compute indices. |
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374 Some compilers may recognize and intrinsify ffs to be faster than the |
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375 supplied C version. Also, the case of x86 using gcc is special-cased |
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376 to an asm instruction, so is already as fast as it can be, and so |
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377 this setting has no effect. (On most x86s, the asm version is only |
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378 slightly faster than the C version.) |
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379 |
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380 malloc_getpagesize default: derive from system includes, or 4096. |
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381 The system page size. To the extent possible, this malloc manages |
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382 memory from the system in page-size units. This may be (and |
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383 usually is) a function rather than a constant. This is ignored |
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384 if WIN32, where page size is determined using getSystemInfo during |
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385 initialization. |
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386 |
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387 USE_DEV_RANDOM default: 0 (i.e., not used) |
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388 Causes malloc to use /dev/random to initialize secure magic seed for |
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389 stamping footers. Otherwise, the current time is used. |
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390 |
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391 NO_MALLINFO default: 0 |
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392 If defined, don't compile "mallinfo". This can be a simple way |
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393 of dealing with mismatches between system declarations and |
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394 those in this file. |
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395 |
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396 MALLINFO_FIELD_TYPE default: size_t |
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397 The type of the fields in the mallinfo struct. This was originally |
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398 defined as "int" in SVID etc, but is more usefully defined as |
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399 size_t. The value is used only if HAVE_USR_INCLUDE_MALLOC_H is not set |
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400 |
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401 REALLOC_ZERO_BYTES_FREES default: not defined |
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402 This should be set if a call to realloc with zero bytes should |
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403 be the same as a call to free. Some people think it should. Otherwise, |
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404 since this malloc returns a unique pointer for malloc(0), so does |
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405 realloc(p, 0). |
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406 |
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407 LACKS_UNISTD_H, LACKS_FCNTL_H, LACKS_SYS_PARAM_H, LACKS_SYS_MMAN_H |
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408 LACKS_STRINGS_H, LACKS_STRING_H, LACKS_SYS_TYPES_H, LACKS_ERRNO_H |
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409 LACKS_STDLIB_H default: NOT defined unless on WIN32 |
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410 Define these if your system does not have these header files. |
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411 You might need to manually insert some of the declarations they provide. |
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412 |
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413 DEFAULT_GRANULARITY default: page size if MORECORE_CONTIGUOUS, |
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414 system_info.dwAllocationGranularity in WIN32, |
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415 otherwise 64K. |
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416 Also settable using mallopt(M_GRANULARITY, x) |
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417 The unit for allocating and deallocating memory from the system. On |
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418 most systems with contiguous MORECORE, there is no reason to |
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419 make this more than a page. However, systems with MMAP tend to |
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420 either require or encourage larger granularities. You can increase |
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421 this value to prevent system allocation functions to be called so |
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422 often, especially if they are slow. The value must be at least one |
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423 page and must be a power of two. Setting to 0 causes initialization |
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424 to either page size or win32 region size. (Note: In previous |
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425 versions of malloc, the equivalent of this option was called |
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426 "TOP_PAD") |
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427 |
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428 DEFAULT_TRIM_THRESHOLD default: 2MB |
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429 Also settable using mallopt(M_TRIM_THRESHOLD, x) |
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430 The maximum amount of unused top-most memory to keep before |
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431 releasing via malloc_trim in free(). Automatic trimming is mainly |
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432 useful in long-lived programs using contiguous MORECORE. Because |
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433 trimming via sbrk can be slow on some systems, and can sometimes be |
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434 wasteful (in cases where programs immediately afterward allocate |
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435 more large chunks) the value should be high enough so that your |
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436 overall system performance would improve by releasing this much |
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437 memory. As a rough guide, you might set to a value close to the |
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438 average size of a process (program) running on your system. |
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439 Releasing this much memory would allow such a process to run in |
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440 memory. Generally, it is worth tuning trim thresholds when a |
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441 program undergoes phases where several large chunks are allocated |
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442 and released in ways that can reuse each other's storage, perhaps |
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443 mixed with phases where there are no such chunks at all. The trim |
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444 value must be greater than page size to have any useful effect. To |
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445 disable trimming completely, you can set to MAX_SIZE_T. Note that the trick |
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446 some people use of mallocing a huge space and then freeing it at |
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447 program startup, in an attempt to reserve system memory, doesn't |
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448 have the intended effect under automatic trimming, since that memory |
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449 will immediately be returned to the system. |
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450 |
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451 DEFAULT_MMAP_THRESHOLD default: 256K |
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452 Also settable using mallopt(M_MMAP_THRESHOLD, x) |
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453 The request size threshold for using MMAP to directly service a |
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454 request. Requests of at least this size that cannot be allocated |
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455 using already-existing space will be serviced via mmap. (If enough |
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456 normal freed space already exists it is used instead.) Using mmap |
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457 segregates relatively large chunks of memory so that they can be |
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458 individually obtained and released from the host system. A request |
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459 serviced through mmap is never reused by any other request (at least |
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460 not directly; the system may just so happen to remap successive |
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461 requests to the same locations). Segregating space in this way has |
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462 the benefits that: Mmapped space can always be individually released |
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463 back to the system, which helps keep the system level memory demands |
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464 of a long-lived program low. Also, mapped memory doesn't become |
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465 `locked' between other chunks, as can happen with normally allocated |
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466 chunks, which means that even trimming via malloc_trim would not |
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467 release them. However, it has the disadvantage that the space |
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468 cannot be reclaimed, consolidated, and then used to service later |
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469 requests, as happens with normal chunks. The advantages of mmap |
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470 nearly always outweigh disadvantages for "large" chunks, but the |
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471 value of "large" may vary across systems. The default is an |
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472 empirically derived value that works well in most systems. You can |
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473 disable mmap by setting to MAX_SIZE_T. |
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474 |
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475 */ |
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476 |
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477 #ifndef WIN32 |
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478 #ifdef _WIN32 |
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479 #define WIN32 1 |
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480 #endif /* _WIN32 */ |
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481 #endif /* WIN32 */ |
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482 #ifdef WIN32 |
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483 #define WIN32_LEAN_AND_MEAN |
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484 #include <windows.h> |
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485 #define HAVE_MMAP 1 |
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486 #define HAVE_MORECORE 0 |
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487 #define LACKS_UNISTD_H |
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488 #define LACKS_SYS_PARAM_H |
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489 #define LACKS_SYS_MMAN_H |
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490 #define LACKS_STRING_H |
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491 #define LACKS_STRINGS_H |
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492 #define LACKS_SYS_TYPES_H |
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493 #define LACKS_ERRNO_H |
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494 #define LACKS_FCNTL_H |
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495 #define MALLOC_FAILURE_ACTION |
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496 #define MMAP_CLEARS 0 /* WINCE and some others apparently don't clear */ |
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497 #endif /* WIN32 */ |
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498 |
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499 #if defined(DARWIN) || defined(_DARWIN) |
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500 /* Mac OSX docs advise not to use sbrk; it seems better to use mmap */ |
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501 #ifndef HAVE_MORECORE |
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502 #define HAVE_MORECORE 0 |
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503 #define HAVE_MMAP 1 |
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504 #endif /* HAVE_MORECORE */ |
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505 #endif /* DARWIN */ |
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506 |
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507 #ifndef LACKS_SYS_TYPES_H |
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508 #include <sys/types.h> /* For size_t */ |
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509 #endif /* LACKS_SYS_TYPES_H */ |
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510 |
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511 /* The maximum possible size_t value has all bits set */ |
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512 #define MAX_SIZE_T (~(size_t)0) |
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513 |
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514 #ifndef ONLY_MSPACES |
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515 #define ONLY_MSPACES 0 |
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516 #endif /* ONLY_MSPACES */ |
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517 #ifndef MSPACES |
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518 #if ONLY_MSPACES |
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519 #define MSPACES 1 |
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520 #else /* ONLY_MSPACES */ |
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521 #define MSPACES 0 |
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522 #endif /* ONLY_MSPACES */ |
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523 #endif /* MSPACES */ |
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524 #ifndef MALLOC_ALIGNMENT |
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525 #define MALLOC_ALIGNMENT ((size_t)8U) |
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526 #endif /* MALLOC_ALIGNMENT */ |
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527 #ifndef FOOTERS |
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528 #define FOOTERS 0 |
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529 #endif /* FOOTERS */ |
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530 #ifndef ABORT |
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531 #define ABORT abort() |
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532 #endif /* ABORT */ |
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533 #ifndef ABORT_ON_ASSERT_FAILURE |
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534 #define ABORT_ON_ASSERT_FAILURE 1 |
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535 #endif /* ABORT_ON_ASSERT_FAILURE */ |
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536 #ifndef PROCEED_ON_ERROR |
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537 #define PROCEED_ON_ERROR 0 |
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538 #endif /* PROCEED_ON_ERROR */ |
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539 #ifndef USE_LOCKS |
|
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540 #define USE_LOCKS 0 |
|
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541 #endif /* USE_LOCKS */ |
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542 #ifndef INSECURE |
|
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543 #define INSECURE 0 |
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544 #endif /* INSECURE */ |
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545 #ifndef HAVE_MMAP |
|
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546 #define HAVE_MMAP 1 |
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547 #endif /* HAVE_MMAP */ |
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548 #ifndef MMAP_CLEARS |
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549 #define MMAP_CLEARS 1 |
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550 #endif /* MMAP_CLEARS */ |
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551 #ifndef HAVE_MREMAP |
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552 #ifdef linux |
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553 #define HAVE_MREMAP 1 |
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554 #else /* linux */ |
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555 #define HAVE_MREMAP 0 |
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556 #endif /* linux */ |
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557 #endif /* HAVE_MREMAP */ |
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558 #ifndef MALLOC_FAILURE_ACTION |
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559 #define MALLOC_FAILURE_ACTION errno = ENOMEM; |
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560 #endif /* MALLOC_FAILURE_ACTION */ |
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561 #ifndef HAVE_MORECORE |
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562 #if ONLY_MSPACES |
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563 #define HAVE_MORECORE 0 |
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564 #else /* ONLY_MSPACES */ |
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565 #define HAVE_MORECORE 1 |
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566 #endif /* ONLY_MSPACES */ |
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567 #endif /* HAVE_MORECORE */ |
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568 #if !HAVE_MORECORE |
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569 #define MORECORE_CONTIGUOUS 0 |
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570 #else /* !HAVE_MORECORE */ |
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571 #ifndef MORECORE |
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572 #define MORECORE sbrk |
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573 #endif /* MORECORE */ |
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574 #ifndef MORECORE_CONTIGUOUS |
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575 #define MORECORE_CONTIGUOUS 1 |
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576 #endif /* MORECORE_CONTIGUOUS */ |
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577 #endif /* HAVE_MORECORE */ |
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578 #ifndef DEFAULT_GRANULARITY |
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579 #if MORECORE_CONTIGUOUS |
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580 #define DEFAULT_GRANULARITY (0) /* 0 means to compute in init_mparams */ |
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581 #else /* MORECORE_CONTIGUOUS */ |
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582 #define DEFAULT_GRANULARITY ((size_t)64U * (size_t)1024U) |
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583 #endif /* MORECORE_CONTIGUOUS */ |
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584 #endif /* DEFAULT_GRANULARITY */ |
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585 #ifndef DEFAULT_TRIM_THRESHOLD |
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586 #ifndef MORECORE_CANNOT_TRIM |
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587 #define DEFAULT_TRIM_THRESHOLD ((size_t)2U * (size_t)1024U * (size_t)1024U) |
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588 #else /* MORECORE_CANNOT_TRIM */ |
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589 #define DEFAULT_TRIM_THRESHOLD MAX_SIZE_T |
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590 #endif /* MORECORE_CANNOT_TRIM */ |
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591 #endif /* DEFAULT_TRIM_THRESHOLD */ |
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592 #ifndef DEFAULT_MMAP_THRESHOLD |
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593 #if HAVE_MMAP |
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|
594 #define DEFAULT_MMAP_THRESHOLD ((size_t)256U * (size_t)1024U) |
|
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|
595 #else /* HAVE_MMAP */ |
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596 #define DEFAULT_MMAP_THRESHOLD MAX_SIZE_T |
|
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597 #endif /* HAVE_MMAP */ |
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598 #endif /* DEFAULT_MMAP_THRESHOLD */ |
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599 #ifndef USE_BUILTIN_FFS |
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600 #define USE_BUILTIN_FFS 0 |
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601 #endif /* USE_BUILTIN_FFS */ |
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602 #ifndef USE_DEV_RANDOM |
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603 #define USE_DEV_RANDOM 0 |
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604 #endif /* USE_DEV_RANDOM */ |
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605 #ifndef NO_MALLINFO |
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606 #define NO_MALLINFO 0 |
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607 #endif /* NO_MALLINFO */ |
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608 #ifndef MALLINFO_FIELD_TYPE |
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609 #define MALLINFO_FIELD_TYPE size_t |
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610 #endif /* MALLINFO_FIELD_TYPE */ |
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611 |
|
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612 #define memset SDL_memset |
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613 #define memcpy SDL_memcpy |
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614 #define malloc SDL_malloc |
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615 #define calloc SDL_calloc |
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616 #define realloc SDL_realloc |
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617 #define free SDL_free |
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618 |
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619 /* |
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620 mallopt tuning options. SVID/XPG defines four standard parameter |
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621 numbers for mallopt, normally defined in malloc.h. None of these |
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622 are used in this malloc, so setting them has no effect. But this |
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623 malloc does support the following options. |
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624 */ |
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625 |
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626 #define M_TRIM_THRESHOLD (-1) |
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627 #define M_GRANULARITY (-2) |
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628 #define M_MMAP_THRESHOLD (-3) |
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629 |
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|
630 /* ------------------------ Mallinfo declarations ------------------------ */ |
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631 |
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632 #if !NO_MALLINFO |
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633 /* |
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|
634 This version of malloc supports the standard SVID/XPG mallinfo |
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635 routine that returns a struct containing usage properties and |
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636 statistics. It should work on any system that has a |
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|
637 /usr/include/malloc.h defining struct mallinfo. The main |
|
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|
638 declaration needed is the mallinfo struct that is returned (by-copy) |
|
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|
639 by mallinfo(). The malloinfo struct contains a bunch of fields that |
|
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|
640 are not even meaningful in this version of malloc. These fields are |
|
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|
641 are instead filled by mallinfo() with other numbers that might be of |
|
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|
642 interest. |
|
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|
643 |
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|
644 HAVE_USR_INCLUDE_MALLOC_H should be set if you have a |
|
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|
645 /usr/include/malloc.h file that includes a declaration of struct |
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646 mallinfo. If so, it is included; else a compliant version is |
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|
647 declared below. These must be precisely the same for mallinfo() to |
|
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|
648 work. The original SVID version of this struct, defined on most |
|
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|
649 systems with mallinfo, declares all fields as ints. But some others |
|
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650 define as unsigned long. If your system defines the fields using a |
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651 type of different width than listed here, you MUST #include your |
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652 system version and #define HAVE_USR_INCLUDE_MALLOC_H. |
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653 */ |
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654 |
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655 /* #define HAVE_USR_INCLUDE_MALLOC_H */ |
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656 |
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657 #ifdef HAVE_USR_INCLUDE_MALLOC_H |
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658 #include "/usr/include/malloc.h" |
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659 #else /* HAVE_USR_INCLUDE_MALLOC_H */ |
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660 |
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661 struct mallinfo |
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662 { |
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663 MALLINFO_FIELD_TYPE arena; /* non-mmapped space allocated from system */ |
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664 MALLINFO_FIELD_TYPE ordblks; /* number of free chunks */ |
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665 MALLINFO_FIELD_TYPE smblks; /* always 0 */ |
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666 MALLINFO_FIELD_TYPE hblks; /* always 0 */ |
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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667 MALLINFO_FIELD_TYPE hblkhd; /* space in mmapped regions */ |
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668 MALLINFO_FIELD_TYPE usmblks; /* maximum total allocated space */ |
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669 MALLINFO_FIELD_TYPE fsmblks; /* always 0 */ |
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670 MALLINFO_FIELD_TYPE uordblks; /* total allocated space */ |
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671 MALLINFO_FIELD_TYPE fordblks; /* total free space */ |
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672 MALLINFO_FIELD_TYPE keepcost; /* releasable (via malloc_trim) space */ |
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673 }; |
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674 |
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675 #endif /* HAVE_USR_INCLUDE_MALLOC_H */ |
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676 #endif /* NO_MALLINFO */ |
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677 |
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678 #ifdef __cplusplus |
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679 extern "C" |
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680 { |
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681 #endif /* __cplusplus */ |
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682 |
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683 #if !ONLY_MSPACES |
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684 |
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685 /* ------------------- Declarations of public routines ------------------- */ |
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686 |
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687 #ifndef USE_DL_PREFIX |
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688 #define dlcalloc calloc |
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689 #define dlfree free |
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690 #define dlmalloc malloc |
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691 #define dlmemalign memalign |
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692 #define dlrealloc realloc |
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693 #define dlvalloc valloc |
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694 #define dlpvalloc pvalloc |
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695 #define dlmallinfo mallinfo |
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696 #define dlmallopt mallopt |
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697 #define dlmalloc_trim malloc_trim |
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698 #define dlmalloc_stats malloc_stats |
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699 #define dlmalloc_usable_size malloc_usable_size |
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700 #define dlmalloc_footprint malloc_footprint |
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701 #define dlmalloc_max_footprint malloc_max_footprint |
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702 #define dlindependent_calloc independent_calloc |
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703 #define dlindependent_comalloc independent_comalloc |
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704 #endif /* USE_DL_PREFIX */ |
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705 |
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706 |
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707 /* |
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708 malloc(size_t n) |
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709 Returns a pointer to a newly allocated chunk of at least n bytes, or |
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710 null if no space is available, in which case errno is set to ENOMEM |
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711 on ANSI C systems. |
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712 |
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713 If n is zero, malloc returns a minimum-sized chunk. (The minimum |
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714 size is 16 bytes on most 32bit systems, and 32 bytes on 64bit |
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715 systems.) Note that size_t is an unsigned type, so calls with |
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716 arguments that would be negative if signed are interpreted as |
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717 requests for huge amounts of space, which will often fail. The |
|
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718 maximum supported value of n differs across systems, but is in all |
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719 cases less than the maximum representable value of a size_t. |
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720 */ |
|
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721 void *dlmalloc(size_t); |
|
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722 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
723 /* |
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|
724 free(void* p) |
|
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|
725 Releases the chunk of memory pointed to by p, that had been previously |
|
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|
726 allocated using malloc or a related routine such as realloc. |
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|
727 It has no effect if p is null. If p was not malloced or already |
|
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|
728 freed, free(p) will by default cause the current program to abort. |
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|
729 */ |
|
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730 void dlfree(void *); |
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|
731 |
|
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|
732 /* |
|
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|
733 calloc(size_t n_elements, size_t element_size); |
|
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|
734 Returns a pointer to n_elements * element_size bytes, with all locations |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
735 set to zero. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
736 */ |
|
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737 void *dlcalloc(size_t, size_t); |
|
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|
738 |
|
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|
739 /* |
|
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|
740 realloc(void* p, size_t n) |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
741 Returns a pointer to a chunk of size n that contains the same data |
|
450721ad5436
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parents:
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changeset
|
742 as does chunk p up to the minimum of (n, p's size) bytes, or null |
|
450721ad5436
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|
743 if no space is available. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
744 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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changeset
|
745 The returned pointer may or may not be the same as p. The algorithm |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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changeset
|
746 prefers extending p in most cases when possible, otherwise it |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
747 employs the equivalent of a malloc-copy-free sequence. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
748 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
749 If p is null, realloc is equivalent to malloc. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
diff
changeset
|
750 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
diff
changeset
|
751 If space is not available, realloc returns null, errno is set (if on |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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changeset
|
752 ANSI) and p is NOT freed. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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changeset
|
753 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
754 if n is for fewer bytes than already held by p, the newly unused |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
diff
changeset
|
755 space is lopped off and freed if possible. realloc with a size |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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changeset
|
756 argument of zero (re)allocates a minimum-sized chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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changeset
|
757 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
diff
changeset
|
758 The old unix realloc convention of allowing the last-free'd chunk |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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changeset
|
759 to be used as an argument to realloc is not supported. |
|
450721ad5436
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760 */ |
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761 |
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762 void *dlrealloc(void *, size_t); |
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763 |
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764 /* |
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765 memalign(size_t alignment, size_t n); |
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766 Returns a pointer to a newly allocated chunk of n bytes, aligned |
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767 in accord with the alignment argument. |
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768 |
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769 The alignment argument should be a power of two. If the argument is |
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parents:
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770 not a power of two, the nearest greater power is used. |
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771 8-byte alignment is guaranteed by normal malloc calls, so don't |
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772 bother calling memalign with an argument of 8 or less. |
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773 |
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774 Overreliance on memalign is a sure way to fragment space. |
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775 */ |
|
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776 void *dlmemalign(size_t, size_t); |
|
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777 |
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It's now possible to build SDL without any C runtime at all on Windows,
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778 /* |
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779 valloc(size_t n); |
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780 Equivalent to memalign(pagesize, n), where pagesize is the page |
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781 size of the system. If the pagesize is unknown, 4096 is used. |
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782 */ |
|
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783 void *dlvalloc(size_t); |
|
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784 |
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785 /* |
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parents:
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|
786 mallopt(int parameter_number, int parameter_value) |
|
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787 Sets tunable parameters The format is to provide a |
|
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788 (parameter-number, parameter-value) pair. mallopt then sets the |
|
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789 corresponding parameter to the argument value if it can (i.e., so |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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790 long as the value is meaningful), and returns 1 if successful else |
|
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791 0. SVID/XPG/ANSI defines four standard param numbers for mallopt, |
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792 normally defined in malloc.h. None of these are use in this malloc, |
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parents:
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793 so setting them has no effect. But this malloc also supports other |
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parents:
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794 options in mallopt. See below for details. Briefly, supported |
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795 parameters are as follows (listed defaults are for "typical" |
|
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796 configurations). |
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797 |
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798 Symbol param # default allowed param values |
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799 M_TRIM_THRESHOLD -1 2*1024*1024 any (MAX_SIZE_T disables) |
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800 M_GRANULARITY -2 page size any power of 2 >= page size |
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801 M_MMAP_THRESHOLD -3 256*1024 any (or 0 if no MMAP support) |
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802 */ |
|
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803 int dlmallopt(int, int); |
|
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804 |
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805 /* |
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|
806 malloc_footprint(); |
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807 Returns the number of bytes obtained from the system. The total |
|
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808 number of bytes allocated by malloc, realloc etc., is less than this |
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809 value. Unlike mallinfo, this function returns only a precomputed |
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810 result, so can be called frequently to monitor memory consumption. |
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811 Even if locks are otherwise defined, this function does not use them, |
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812 so results might not be up to date. |
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813 */ |
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814 size_t dlmalloc_footprint(void); |
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815 |
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816 /* |
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817 malloc_max_footprint(); |
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818 Returns the maximum number of bytes obtained from the system. This |
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819 value will be greater than current footprint if deallocated space |
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820 has been reclaimed by the system. The peak number of bytes allocated |
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821 by malloc, realloc etc., is less than this value. Unlike mallinfo, |
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822 this function returns only a precomputed result, so can be called |
|
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|
823 frequently to monitor memory consumption. Even if locks are |
|
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824 otherwise defined, this function does not use them, so results might |
|
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|
825 not be up to date. |
|
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|
826 */ |
|
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827 size_t dlmalloc_max_footprint(void); |
|
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828 |
|
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|
829 #if !NO_MALLINFO |
|
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|
830 /* |
|
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|
831 mallinfo() |
|
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832 Returns (by copy) a struct containing various summary statistics: |
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833 |
|
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|
834 arena: current total non-mmapped bytes allocated from system |
|
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835 ordblks: the number of free chunks |
|
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|
836 smblks: always zero. |
|
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837 hblks: current number of mmapped regions |
|
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838 hblkhd: total bytes held in mmapped regions |
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839 usmblks: the maximum total allocated space. This will be greater |
|
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|
840 than current total if trimming has occurred. |
|
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841 fsmblks: always zero |
|
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842 uordblks: current total allocated space (normal or mmapped) |
|
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|
843 fordblks: total free space |
|
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844 keepcost: the maximum number of bytes that could ideally be released |
|
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|
845 back to system via malloc_trim. ("ideally" means that |
|
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|
846 it ignores page restrictions etc.) |
|
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|
847 |
|
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|
848 Because these fields are ints, but internal bookkeeping may |
|
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|
849 be kept as longs, the reported values may wrap around zero and |
|
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850 thus be inaccurate. |
|
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|
851 */ |
|
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852 struct mallinfo dlmallinfo(void); |
|
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|
853 #endif /* NO_MALLINFO */ |
|
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854 |
|
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855 /* |
|
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|
856 independent_calloc(size_t n_elements, size_t element_size, void* chunks[]); |
|
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|
857 |
|
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|
858 independent_calloc is similar to calloc, but instead of returning a |
|
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|
859 single cleared space, it returns an array of pointers to n_elements |
|
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|
860 independent elements that can hold contents of size elem_size, each |
|
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|
861 of which starts out cleared, and can be independently freed, |
|
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|
862 realloc'ed etc. The elements are guaranteed to be adjacently |
|
450721ad5436
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863 allocated (this is not guaranteed to occur with multiple callocs or |
|
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|
864 mallocs), which may also improve cache locality in some |
|
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|
865 applications. |
|
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|
866 |
|
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|
867 The "chunks" argument is optional (i.e., may be null, which is |
|
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|
868 probably the most typical usage). If it is null, the returned array |
|
450721ad5436
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|
869 is itself dynamically allocated and should also be freed when it is |
|
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|
870 no longer needed. Otherwise, the chunks array must be of at least |
|
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|
871 n_elements in length. It is filled in with the pointers to the |
|
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|
872 chunks. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
873 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
874 In either case, independent_calloc returns this pointer array, or |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
875 null if the allocation failed. If n_elements is zero and "chunks" |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
diff
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|
876 is null, it returns a chunk representing an array with zero elements |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
877 (which should be freed if not wanted). |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
878 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
879 Each element must be individually freed when it is no longer |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
880 needed. If you'd like to instead be able to free all at once, you |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
881 should instead use regular calloc and assign pointers into this |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
882 space to represent elements. (In this case though, you cannot |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
883 independently free elements.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
884 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
885 independent_calloc simplifies and speeds up implementations of many |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
886 kinds of pools. It may also be useful when constructing large data |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
887 structures that initially have a fixed number of fixed-sized nodes, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
888 but the number is not known at compile time, and some of the nodes |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
889 may later need to be freed. For example: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
890 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
891 struct Node { int item; struct Node* next; }; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
892 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
893 struct Node* build_list() { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
894 struct Node** pool; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
895 int n = read_number_of_nodes_needed(); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
896 if (n <= 0) return 0; |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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|
897 pool = (struct Node**)(independent_calloc(n, sizeof(struct Node), 0); |
|
450721ad5436
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Sam Lantinga <slouken@libsdl.org>
parents:
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|
898 if (pool == 0) die(); |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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|
899 // organize into a linked list... |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
900 struct Node* first = pool[0]; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
901 for (i = 0; i < n-1; ++i) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
902 pool[i]->next = pool[i+1]; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
903 free(pool); // Can now free the array (or not, if it is needed later) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
904 return first; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
905 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
906 */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
907 void **dlindependent_calloc(size_t, size_t, void **); |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
908 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
909 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
910 independent_comalloc(size_t n_elements, size_t sizes[], void* chunks[]); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
911 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
912 independent_comalloc allocates, all at once, a set of n_elements |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
913 chunks with sizes indicated in the "sizes" array. It returns |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
914 an array of pointers to these elements, each of which can be |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
915 independently freed, realloc'ed etc. The elements are guaranteed to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
916 be adjacently allocated (this is not guaranteed to occur with |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
917 multiple callocs or mallocs), which may also improve cache locality |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
918 in some applications. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
919 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
920 The "chunks" argument is optional (i.e., may be null). If it is null |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
921 the returned array is itself dynamically allocated and should also |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
922 be freed when it is no longer needed. Otherwise, the chunks array |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
923 must be of at least n_elements in length. It is filled in with the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
924 pointers to the chunks. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
925 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
926 In either case, independent_comalloc returns this pointer array, or |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
927 null if the allocation failed. If n_elements is zero and chunks is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
928 null, it returns a chunk representing an array with zero elements |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
929 (which should be freed if not wanted). |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
930 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
931 Each element must be individually freed when it is no longer |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
932 needed. If you'd like to instead be able to free all at once, you |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
933 should instead use a single regular malloc, and assign pointers at |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
934 particular offsets in the aggregate space. (In this case though, you |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
935 cannot independently free elements.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
936 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
937 independent_comallac differs from independent_calloc in that each |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
938 element may have a different size, and also that it does not |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
939 automatically clear elements. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
940 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
941 independent_comalloc can be used to speed up allocation in cases |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
942 where several structs or objects must always be allocated at the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
943 same time. For example: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
944 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
945 struct Head { ... } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
946 struct Foot { ... } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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changeset
|
947 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
948 void send_message(char* msg) { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
949 int msglen = strlen(msg); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
950 size_t sizes[3] = { sizeof(struct Head), msglen, sizeof(struct Foot) }; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
951 void* chunks[3]; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
952 if (independent_comalloc(3, sizes, chunks) == 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
953 die(); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
954 struct Head* head = (struct Head*)(chunks[0]); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
955 char* body = (char*)(chunks[1]); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
956 struct Foot* foot = (struct Foot*)(chunks[2]); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
957 // ... |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
958 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
959 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
960 In general though, independent_comalloc is worth using only for |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
961 larger values of n_elements. For small values, you probably won't |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
962 detect enough difference from series of malloc calls to bother. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
963 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
964 Overuse of independent_comalloc can increase overall memory usage, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
965 since it cannot reuse existing noncontiguous small chunks that |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
966 might be available for some of the elements. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
967 */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
968 void **dlindependent_comalloc(size_t, size_t *, void **); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
969 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
970 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
971 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
972 pvalloc(size_t n); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
973 Equivalent to valloc(minimum-page-that-holds(n)), that is, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
974 round up n to nearest pagesize. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
975 */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
976 void *dlpvalloc(size_t); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
977 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
978 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
979 malloc_trim(size_t pad); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
980 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
981 If possible, gives memory back to the system (via negative arguments |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
982 to sbrk) if there is unused memory at the `high' end of the malloc |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
983 pool or in unused MMAP segments. You can call this after freeing |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
984 large blocks of memory to potentially reduce the system-level memory |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
985 requirements of a program. However, it cannot guarantee to reduce |
|
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parents:
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|
986 memory. Under some allocation patterns, some large free blocks of |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
987 memory will be locked between two used chunks, so they cannot be |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
988 given back to the system. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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989 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
990 The `pad' argument to malloc_trim represents the amount of free |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
991 trailing space to leave untrimmed. If this argument is zero, only |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
992 the minimum amount of memory to maintain internal data structures |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
993 will be left. Non-zero arguments can be supplied to maintain enough |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
994 trailing space to service future expected allocations without having |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
995 to re-obtain memory from the system. |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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996 |
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|
997 Malloc_trim returns 1 if it actually released any memory, else 0. |
|
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|
998 */ |
|
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999 int dlmalloc_trim(size_t); |
|
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1000 |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1001 /* |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1002 malloc_usable_size(void* p); |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1003 |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1004 Returns the number of bytes you can actually use in |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1005 an allocated chunk, which may be more than you requested (although |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1006 often not) due to alignment and minimum size constraints. |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1007 You can use this many bytes without worrying about |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1008 overwriting other allocated objects. This is not a particularly great |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1009 programming practice. malloc_usable_size can be more useful in |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1010 debugging and assertions, for example: |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1011 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1012 p = malloc(n); |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1013 assert(malloc_usable_size(p) >= 256); |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1014 */ |
|
1668
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|
1015 size_t dlmalloc_usable_size(void *); |
|
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1016 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1017 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1018 malloc_stats(); |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1019 Prints on stderr the amount of space obtained from the system (both |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1020 via sbrk and mmap), the maximum amount (which may be more than |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1021 current if malloc_trim and/or munmap got called), and the current |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
1022 number of bytes allocated via malloc (or realloc, etc) but not yet |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1023 freed. Note that this is the number of bytes allocated, not the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1024 number requested. It will be larger than the number requested |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
1025 because of alignment and bookkeeping overhead. Because it includes |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1026 alignment wastage as being in use, this figure may be greater than |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1027 zero even when no user-level chunks are allocated. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1028 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1029 The reported current and maximum system memory can be inaccurate if |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1030 a program makes other calls to system memory allocation functions |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1031 (normally sbrk) outside of malloc. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
1032 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1033 malloc_stats prints only the most commonly interesting statistics. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1034 More information can be obtained by calling mallinfo. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1035 */ |
|
1668
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|
1036 void dlmalloc_stats(void); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1037 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1038 #endif /* ONLY_MSPACES */ |
|
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parents:
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|
1039 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1040 #if MSPACES |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1041 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1042 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1043 mspace is an opaque type representing an independent |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1044 region of space that supports mspace_malloc, etc. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1045 */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1046 typedef void *mspace; |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1047 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1048 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1049 create_mspace creates and returns a new independent space with the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1050 given initial capacity, or, if 0, the default granularity size. It |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1051 returns null if there is no system memory available to create the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1052 space. If argument locked is non-zero, the space uses a separate |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1053 lock to control access. The capacity of the space will grow |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1054 dynamically as needed to service mspace_malloc requests. You can |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1055 control the sizes of incremental increases of this space by |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1056 compiling with a different DEFAULT_GRANULARITY or dynamically |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1057 setting with mallopt(M_GRANULARITY, value). |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1058 */ |
|
1668
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|
1059 mspace create_mspace(size_t capacity, int locked); |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1060 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1061 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1062 destroy_mspace destroys the given space, and attempts to return all |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1063 of its memory back to the system, returning the total number of |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1064 bytes freed. After destruction, the results of access to all memory |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1065 used by the space become undefined. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1066 */ |
|
1668
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|
1067 size_t destroy_mspace(mspace msp); |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1068 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1069 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1070 create_mspace_with_base uses the memory supplied as the initial base |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1071 of a new mspace. Part (less than 128*sizeof(size_t) bytes) of this |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1072 space is used for bookkeeping, so the capacity must be at least this |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1073 large. (Otherwise 0 is returned.) When this initial space is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1074 exhausted, additional memory will be obtained from the system. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1075 Destroying this space will deallocate all additionally allocated |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1076 space (if possible) but not the initial base. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1077 */ |
|
1668
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Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1078 mspace create_mspace_with_base(void *base, size_t capacity, int locked); |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1079 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1080 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1081 mspace_malloc behaves as malloc, but operates within |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1082 the given space. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1083 */ |
|
1668
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|
1084 void *mspace_malloc(mspace msp, size_t bytes); |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1085 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1086 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1087 mspace_free behaves as free, but operates within |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1088 the given space. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1089 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1090 If compiled with FOOTERS==1, mspace_free is not actually needed. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1091 free may be called instead of mspace_free because freed chunks from |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1092 any space are handled by their originating spaces. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1093 */ |
|
1668
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more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1094 void mspace_free(mspace msp, void *mem); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1095 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1096 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1097 mspace_realloc behaves as realloc, but operates within |
|
450721ad5436
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|
1098 the given space. |
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|
1099 |
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|
1100 If compiled with FOOTERS==1, mspace_realloc is not actually |
|
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|
1101 needed. realloc may be called instead of mspace_realloc because |
|
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parents:
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|
1102 realloced chunks from any space are handled by their originating |
|
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1103 spaces. |
|
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|
1104 */ |
|
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1105 void *mspace_realloc(mspace msp, void *mem, size_t newsize); |
|
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1106 |
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1107 /* |
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1108 mspace_calloc behaves as calloc, but operates within |
|
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parents:
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1109 the given space. |
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1110 */ |
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1111 void *mspace_calloc(mspace msp, size_t n_elements, size_t elem_size); |
|
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1112 |
|
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|
1113 /* |
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parents:
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|
1114 mspace_memalign behaves as memalign, but operates within |
|
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1115 the given space. |
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1116 */ |
|
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1117 void *mspace_memalign(mspace msp, size_t alignment, size_t bytes); |
|
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1118 |
|
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parents:
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|
1119 /* |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1120 mspace_independent_calloc behaves as independent_calloc, but |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1121 operates within the given space. |
|
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1122 */ |
|
1668
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1123 void **mspace_independent_calloc(mspace msp, size_t n_elements, |
|
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1124 size_t elem_size, void *chunks[]); |
|
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1125 |
|
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parents:
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|
1126 /* |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1127 mspace_independent_comalloc behaves as independent_comalloc, but |
|
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parents:
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1128 operates within the given space. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1129 */ |
|
1668
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1130 void **mspace_independent_comalloc(mspace msp, size_t n_elements, |
|
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1131 size_t sizes[], void *chunks[]); |
|
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1132 |
|
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|
1133 /* |
|
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parents:
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|
1134 mspace_footprint() returns the number of bytes obtained from the |
|
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parents:
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|
1135 system for this space. |
|
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|
1136 */ |
|
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1137 size_t mspace_footprint(mspace msp); |
|
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1138 |
|
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|
1139 /* |
|
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parents:
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|
1140 mspace_max_footprint() returns the peak number of bytes obtained from the |
|
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parents:
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|
1141 system for this space. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1142 */ |
|
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1143 size_t mspace_max_footprint(mspace msp); |
|
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1144 |
|
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|
1145 |
|
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parents:
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|
1146 #if !NO_MALLINFO |
|
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parents:
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|
1147 /* |
|
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|
1148 mspace_mallinfo behaves as mallinfo, but reports properties of |
|
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|
1149 the given space. |
|
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parents:
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|
1150 */ |
|
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1151 struct mallinfo mspace_mallinfo(mspace msp); |
|
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|
1152 #endif /* NO_MALLINFO */ |
|
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|
1153 |
|
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parents:
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|
1154 /* |
|
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parents:
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|
1155 mspace_malloc_stats behaves as malloc_stats, but reports |
|
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parents:
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|
1156 properties of the given space. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1157 */ |
|
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1158 void mspace_malloc_stats(mspace msp); |
|
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1159 |
|
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parents:
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|
1160 /* |
|
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parents:
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|
1161 mspace_trim behaves as malloc_trim, but |
|
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|
1162 operates within the given space. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1163 */ |
|
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1164 int mspace_trim(mspace msp, size_t pad); |
|
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1165 |
|
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parents:
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|
1166 /* |
|
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parents:
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|
1167 An alias for mallopt. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1168 */ |
|
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|
1169 int mspace_mallopt(int, int); |
|
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|
1170 |
|
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|
1171 #endif /* MSPACES */ |
|
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1172 |
|
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parents:
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|
1173 #ifdef __cplusplus |
|
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|
1174 }; /* end of extern "C" */ |
|
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|
1175 #endif /* __cplusplus */ |
|
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|
1176 |
|
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|
1177 /* |
|
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parents:
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|
1178 ======================================================================== |
|
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|
1179 To make a fully customizable malloc.h header file, cut everything |
|
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|
1180 above this line, put into file malloc.h, edit to suit, and #include it |
|
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parents:
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|
1181 on the next line, as well as in programs that use this malloc. |
|
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|
1182 ======================================================================== |
|
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|
1183 */ |
|
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|
1184 |
|
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|
1185 /* #include "malloc.h" */ |
|
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|
1186 |
|
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|
1187 /*------------------------------ internal #includes ---------------------- */ |
|
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|
1188 |
|
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parents:
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|
1189 #ifdef _MSC_VER |
|
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|
1190 #pragma warning( disable : 4146 ) /* no "unsigned" warnings */ |
|
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|
1191 #endif /* _MSC_VER */ |
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|
1192 |
|
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|
1193 #ifndef LACKS_STDIO_H |
|
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|
1194 #include <stdio.h> /* for printing in malloc_stats */ |
|
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|
1195 #endif |
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|
1196 |
|
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|
1197 #ifndef LACKS_ERRNO_H |
|
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|
1198 #include <errno.h> /* for MALLOC_FAILURE_ACTION */ |
|
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|
1199 #endif /* LACKS_ERRNO_H */ |
|
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|
1200 #if FOOTERS |
|
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|
1201 #include <time.h> /* for magic initialization */ |
|
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|
1202 #endif /* FOOTERS */ |
|
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|
1203 #ifndef LACKS_STDLIB_H |
|
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|
1204 #include <stdlib.h> /* for abort() */ |
|
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|
1205 #endif /* LACKS_STDLIB_H */ |
|
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|
1206 #ifdef DEBUG |
|
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|
1207 #if ABORT_ON_ASSERT_FAILURE |
|
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|
1208 #define assert(x) if(!(x)) ABORT |
|
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|
1209 #else /* ABORT_ON_ASSERT_FAILURE */ |
|
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parents:
diff
changeset
|
1210 #include <assert.h> |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1211 #endif /* ABORT_ON_ASSERT_FAILURE */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1212 #else /* DEBUG */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1213 #define assert(x) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1214 #endif /* DEBUG */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1215 #ifndef LACKS_STRING_H |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1216 #include <string.h> /* for memset etc */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1217 #endif /* LACKS_STRING_H */ |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1218 #if USE_BUILTIN_FFS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1219 #ifndef LACKS_STRINGS_H |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1220 #include <strings.h> /* for ffs */ |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1221 #endif /* LACKS_STRINGS_H */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1222 #endif /* USE_BUILTIN_FFS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1223 #if HAVE_MMAP |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1224 #ifndef LACKS_SYS_MMAN_H |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1225 #include <sys/mman.h> /* for mmap */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1226 #endif /* LACKS_SYS_MMAN_H */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1227 #ifndef LACKS_FCNTL_H |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1228 #include <fcntl.h> |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1229 #endif /* LACKS_FCNTL_H */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1230 #endif /* HAVE_MMAP */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1231 #if HAVE_MORECORE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1232 #ifndef LACKS_UNISTD_H |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1233 #include <unistd.h> /* for sbrk */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1234 #else /* LACKS_UNISTD_H */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1235 #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1236 extern void *sbrk(ptrdiff_t); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1237 #endif /* FreeBSD etc */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1238 #endif /* LACKS_UNISTD_H */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1239 #endif /* HAVE_MMAP */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1240 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1241 #ifndef WIN32 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1242 #ifndef malloc_getpagesize |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1243 # ifdef _SC_PAGESIZE /* some SVR4 systems omit an underscore */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1244 # ifndef _SC_PAGE_SIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1245 # define _SC_PAGE_SIZE _SC_PAGESIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1246 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1247 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1248 # ifdef _SC_PAGE_SIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1249 # define malloc_getpagesize sysconf(_SC_PAGE_SIZE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1250 # else |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1251 # if defined(BSD) || defined(DGUX) || defined(HAVE_GETPAGESIZE) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1252 extern size_t getpagesize(); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1253 # define malloc_getpagesize getpagesize() |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1254 # else |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1255 # ifdef WIN32 /* use supplied emulation of getpagesize */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1256 # define malloc_getpagesize getpagesize() |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1257 # else |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1258 # ifndef LACKS_SYS_PARAM_H |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1259 # include <sys/param.h> |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1260 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1261 # ifdef EXEC_PAGESIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1262 # define malloc_getpagesize EXEC_PAGESIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1263 # else |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1264 # ifdef NBPG |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1265 # ifndef CLSIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1266 # define malloc_getpagesize NBPG |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1267 # else |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1268 # define malloc_getpagesize (NBPG * CLSIZE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1269 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1270 # else |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1271 # ifdef NBPC |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1272 # define malloc_getpagesize NBPC |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1273 # else |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1274 # ifdef PAGESIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1275 # define malloc_getpagesize PAGESIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1276 # else /* just guess */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1277 # define malloc_getpagesize ((size_t)4096U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1278 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1279 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1280 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1281 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1282 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1283 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1284 # endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1285 #endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1286 #endif |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1287 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1288 /* ------------------- size_t and alignment properties -------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1289 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1290 /* The byte and bit size of a size_t */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1291 #define SIZE_T_SIZE (sizeof(size_t)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1292 #define SIZE_T_BITSIZE (sizeof(size_t) << 3) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1293 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1294 /* Some constants coerced to size_t */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1295 /* Annoying but necessary to avoid errors on some plaftorms */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1296 #define SIZE_T_ZERO ((size_t)0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1297 #define SIZE_T_ONE ((size_t)1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1298 #define SIZE_T_TWO ((size_t)2) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1299 #define TWO_SIZE_T_SIZES (SIZE_T_SIZE<<1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1300 #define FOUR_SIZE_T_SIZES (SIZE_T_SIZE<<2) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1301 #define SIX_SIZE_T_SIZES (FOUR_SIZE_T_SIZES+TWO_SIZE_T_SIZES) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1302 #define HALF_MAX_SIZE_T (MAX_SIZE_T / 2U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1303 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1304 /* The bit mask value corresponding to MALLOC_ALIGNMENT */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1305 #define CHUNK_ALIGN_MASK (MALLOC_ALIGNMENT - SIZE_T_ONE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1306 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1307 /* True if address a has acceptable alignment */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1308 #define is_aligned(A) (((size_t)((A)) & (CHUNK_ALIGN_MASK)) == 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1309 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1310 /* the number of bytes to offset an address to align it */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1311 #define align_offset(A)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1312 ((((size_t)(A) & CHUNK_ALIGN_MASK) == 0)? 0 :\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1313 ((MALLOC_ALIGNMENT - ((size_t)(A) & CHUNK_ALIGN_MASK)) & CHUNK_ALIGN_MASK)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1314 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1315 /* -------------------------- MMAP preliminaries ------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1316 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1317 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1318 If HAVE_MORECORE or HAVE_MMAP are false, we just define calls and |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1319 checks to fail so compiler optimizer can delete code rather than |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1320 using so many "#if"s. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
diff
changeset
|
1321 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1322 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1323 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1324 /* MORECORE and MMAP must return MFAIL on failure */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1325 #define MFAIL ((void*)(MAX_SIZE_T)) |
|
1662
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
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|
1326 #define CMFAIL ((char*)(MFAIL)) /* defined for convenience */ |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1327 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1328 #if !HAVE_MMAP |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1329 #define IS_MMAPPED_BIT (SIZE_T_ZERO) |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1330 #define USE_MMAP_BIT (SIZE_T_ZERO) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1331 #define CALL_MMAP(s) MFAIL |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1332 #define CALL_MUNMAP(a, s) (-1) |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1333 #define DIRECT_MMAP(s) MFAIL |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1334 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1335 #else /* HAVE_MMAP */ |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1336 #define IS_MMAPPED_BIT (SIZE_T_ONE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1337 #define USE_MMAP_BIT (SIZE_T_ONE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1338 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1339 #ifndef WIN32 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1340 #define CALL_MUNMAP(a, s) munmap((a), (s)) |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1341 #define MMAP_PROT (PROT_READ|PROT_WRITE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1342 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1343 #define MAP_ANONYMOUS MAP_ANON |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1344 #endif /* MAP_ANON */ |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1345 #ifdef MAP_ANONYMOUS |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1346 #define MMAP_FLAGS (MAP_PRIVATE|MAP_ANONYMOUS) |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1347 #define CALL_MMAP(s) mmap(0, (s), MMAP_PROT, MMAP_FLAGS, -1, 0) |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1348 #else /* MAP_ANONYMOUS */ |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1349 /* |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1350 Nearly all versions of mmap support MAP_ANONYMOUS, so the following |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1351 is unlikely to be needed, but is supplied just in case. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1352 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1353 #define MMAP_FLAGS (MAP_PRIVATE) |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
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|
1354 static int dev_zero_fd = -1; /* Cached file descriptor for /dev/zero. */ |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1355 #define CALL_MMAP(s) ((dev_zero_fd < 0) ? \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1356 (dev_zero_fd = open("/dev/zero", O_RDWR), \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1357 mmap(0, (s), MMAP_PROT, MMAP_FLAGS, dev_zero_fd, 0)) : \ |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1358 mmap(0, (s), MMAP_PROT, MMAP_FLAGS, dev_zero_fd, 0)) |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1359 #endif /* MAP_ANONYMOUS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1360 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1361 #define DIRECT_MMAP(s) CALL_MMAP(s) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1362 #else /* WIN32 */ |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1363 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1364 /* Win32 MMAP via VirtualAlloc */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1365 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1366 win32mmap(size_t size) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1367 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1368 void *ptr = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1369 VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1370 return (ptr != 0) ? ptr : MFAIL; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1371 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1372 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1373 /* For direct MMAP, use MEM_TOP_DOWN to minimize interference */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1374 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1375 win32direct_mmap(size_t size) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1376 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1377 void *ptr = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT | MEM_TOP_DOWN, |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1378 PAGE_READWRITE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1379 return (ptr != 0) ? ptr : MFAIL; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1380 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1381 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1382 /* This function supports releasing coalesed segments */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1383 static int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1384 win32munmap(void *ptr, size_t size) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1385 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1386 MEMORY_BASIC_INFORMATION minfo; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1387 char *cptr = ptr; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1388 while (size) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1389 if (VirtualQuery(cptr, &minfo, sizeof(minfo)) == 0) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1390 return -1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1391 if (minfo.BaseAddress != cptr || minfo.AllocationBase != cptr || |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1392 minfo.State != MEM_COMMIT || minfo.RegionSize > size) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1393 return -1; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1394 if (VirtualFree(cptr, 0, MEM_RELEASE) == 0) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1395 return -1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1396 cptr += minfo.RegionSize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1397 size -= minfo.RegionSize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1398 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1399 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1400 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1401 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1402 #define CALL_MMAP(s) win32mmap(s) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1403 #define CALL_MUNMAP(a, s) win32munmap((a), (s)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1404 #define DIRECT_MMAP(s) win32direct_mmap(s) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1405 #endif /* WIN32 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1406 #endif /* HAVE_MMAP */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1407 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1408 #if HAVE_MMAP && HAVE_MREMAP |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1409 #define CALL_MREMAP(addr, osz, nsz, mv) mremap((addr), (osz), (nsz), (mv)) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1410 #else /* HAVE_MMAP && HAVE_MREMAP */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1411 #define CALL_MREMAP(addr, osz, nsz, mv) MFAIL |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1412 #endif /* HAVE_MMAP && HAVE_MREMAP */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1413 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1414 #if HAVE_MORECORE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1415 #define CALL_MORECORE(S) MORECORE(S) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1416 #else /* HAVE_MORECORE */ |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1417 #define CALL_MORECORE(S) MFAIL |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1418 #endif /* HAVE_MORECORE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1419 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1420 /* mstate bit set if continguous morecore disabled or failed */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1421 #define USE_NONCONTIGUOUS_BIT (4U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1422 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1423 /* segment bit set in create_mspace_with_base */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1424 #define EXTERN_BIT (8U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1425 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1426 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1427 /* --------------------------- Lock preliminaries ------------------------ */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1428 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1429 #if USE_LOCKS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1430 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1431 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1432 When locks are defined, there are up to two global locks: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1433 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1434 * If HAVE_MORECORE, morecore_mutex protects sequences of calls to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1435 MORECORE. In many cases sys_alloc requires two calls, that should |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1436 not be interleaved with calls by other threads. This does not |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1437 protect against direct calls to MORECORE by other threads not |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1438 using this lock, so there is still code to cope the best we can on |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1439 interference. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1440 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1441 * magic_init_mutex ensures that mparams.magic and other |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1442 unique mparams values are initialized only once. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1443 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1444 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1445 #ifndef WIN32 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1446 /* By default use posix locks */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1447 #include <pthread.h> |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1448 #define MLOCK_T pthread_mutex_t |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1449 #define INITIAL_LOCK(l) pthread_mutex_init(l, NULL) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1450 #define ACQUIRE_LOCK(l) pthread_mutex_lock(l) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1451 #define RELEASE_LOCK(l) pthread_mutex_unlock(l) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1452 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1453 #if HAVE_MORECORE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1454 static MLOCK_T morecore_mutex = PTHREAD_MUTEX_INITIALIZER; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1455 #endif /* HAVE_MORECORE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1456 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1457 static MLOCK_T magic_init_mutex = PTHREAD_MUTEX_INITIALIZER; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1458 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1459 #else /* WIN32 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1460 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1461 Because lock-protected regions have bounded times, and there |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1462 are no recursive lock calls, we can use simple spinlocks. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1463 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1464 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1465 #define MLOCK_T long |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1466 static int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1467 win32_acquire_lock(MLOCK_T * sl) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1468 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1469 for (;;) { |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1470 #ifdef InterlockedCompareExchangePointer |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1471 if (!InterlockedCompareExchange(sl, 1, 0)) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1472 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1473 #else /* Use older void* version */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1474 if (!InterlockedCompareExchange((void **) sl, (void *) 1, (void *) 0)) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1475 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1476 #endif /* InterlockedCompareExchangePointer */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1477 Sleep(0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1478 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1479 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1480 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1481 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1482 win32_release_lock(MLOCK_T * sl) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1483 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
1484 InterlockedExchange(sl, 0); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1485 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1486 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1487 #define INITIAL_LOCK(l) *(l)=0 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1488 #define ACQUIRE_LOCK(l) win32_acquire_lock(l) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1489 #define RELEASE_LOCK(l) win32_release_lock(l) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1490 #if HAVE_MORECORE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1491 static MLOCK_T morecore_mutex; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1492 #endif /* HAVE_MORECORE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1493 static MLOCK_T magic_init_mutex; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1494 #endif /* WIN32 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1495 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1496 #define USE_LOCK_BIT (2U) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1497 #else /* USE_LOCKS */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1498 #define USE_LOCK_BIT (0U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1499 #define INITIAL_LOCK(l) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1500 #endif /* USE_LOCKS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1501 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1502 #if USE_LOCKS && HAVE_MORECORE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1503 #define ACQUIRE_MORECORE_LOCK() ACQUIRE_LOCK(&morecore_mutex); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1504 #define RELEASE_MORECORE_LOCK() RELEASE_LOCK(&morecore_mutex); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1505 #else /* USE_LOCKS && HAVE_MORECORE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1506 #define ACQUIRE_MORECORE_LOCK() |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1507 #define RELEASE_MORECORE_LOCK() |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1508 #endif /* USE_LOCKS && HAVE_MORECORE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1509 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1510 #if USE_LOCKS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1511 #define ACQUIRE_MAGIC_INIT_LOCK() ACQUIRE_LOCK(&magic_init_mutex); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1512 #define RELEASE_MAGIC_INIT_LOCK() RELEASE_LOCK(&magic_init_mutex); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1513 #else /* USE_LOCKS */ |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1514 #define ACQUIRE_MAGIC_INIT_LOCK() |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1515 #define RELEASE_MAGIC_INIT_LOCK() |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1516 #endif /* USE_LOCKS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1517 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1518 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1519 /* ----------------------- Chunk representations ------------------------ */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1520 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1521 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1522 (The following includes lightly edited explanations by Colin Plumb.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1523 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1524 The malloc_chunk declaration below is misleading (but accurate and |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1525 necessary). It declares a "view" into memory allowing access to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1526 necessary fields at known offsets from a given base. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1527 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1528 Chunks of memory are maintained using a `boundary tag' method as |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1529 originally described by Knuth. (See the paper by Paul Wilson |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1530 ftp://ftp.cs.utexas.edu/pub/garbage/allocsrv.ps for a survey of such |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1531 techniques.) Sizes of free chunks are stored both in the front of |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1532 each chunk and at the end. This makes consolidating fragmented |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1533 chunks into bigger chunks fast. The head fields also hold bits |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1534 representing whether chunks are free or in use. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1535 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1536 Here are some pictures to make it clearer. They are "exploded" to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1537 show that the state of a chunk can be thought of as extending from |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1538 the high 31 bits of the head field of its header through the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1539 prev_foot and PINUSE_BIT bit of the following chunk header. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1540 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1541 A chunk that's in use looks like: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1542 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1543 chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1544 | Size of previous chunk (if P = 1) | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1545 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1546 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |P| |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1547 | Size of this chunk 1| +-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1548 mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1549 | | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1550 +- -+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1551 | | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1552 +- -+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1553 | : |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1554 +- size - sizeof(size_t) available payload bytes -+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1555 : | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1556 chunk-> +- -+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1557 | | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1558 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1559 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |1| |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1560 | Size of next chunk (may or may not be in use) | +-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1561 mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1562 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1563 And if it's free, it looks like this: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1564 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1565 chunk-> +- -+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1566 | User payload (must be in use, or we would have merged!) | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1567 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1568 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |P| |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1569 | Size of this chunk 0| +-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1570 mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1571 | Next pointer | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1572 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1573 | Prev pointer | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1574 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1575 | : |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1576 +- size - sizeof(struct chunk) unused bytes -+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1577 : | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1578 chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1579 | Size of this chunk | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1580 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1581 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |0| |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1582 | Size of next chunk (must be in use, or we would have merged)| +-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1583 mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1584 | : |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1585 +- User payload -+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1586 : | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1587 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1588 |0| |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1589 +-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1590 Note that since we always merge adjacent free chunks, the chunks |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1591 adjacent to a free chunk must be in use. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1592 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1593 Given a pointer to a chunk (which can be derived trivially from the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1594 payload pointer) we can, in O(1) time, find out whether the adjacent |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1595 chunks are free, and if so, unlink them from the lists that they |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1596 are on and merge them with the current chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1597 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1598 Chunks always begin on even word boundaries, so the mem portion |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1599 (which is returned to the user) is also on an even word boundary, and |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1600 thus at least double-word aligned. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1601 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1602 The P (PINUSE_BIT) bit, stored in the unused low-order bit of the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1603 chunk size (which is always a multiple of two words), is an in-use |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1604 bit for the *previous* chunk. If that bit is *clear*, then the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1605 word before the current chunk size contains the previous chunk |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1606 size, and can be used to find the front of the previous chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1607 The very first chunk allocated always has this bit set, preventing |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1608 access to non-existent (or non-owned) memory. If pinuse is set for |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1609 any given chunk, then you CANNOT determine the size of the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1610 previous chunk, and might even get a memory addressing fault when |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1611 trying to do so. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1612 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1613 The C (CINUSE_BIT) bit, stored in the unused second-lowest bit of |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1614 the chunk size redundantly records whether the current chunk is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1615 inuse. This redundancy enables usage checks within free and realloc, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1616 and reduces indirection when freeing and consolidating chunks. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1617 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1618 Each freshly allocated chunk must have both cinuse and pinuse set. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1619 That is, each allocated chunk borders either a previously allocated |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1620 and still in-use chunk, or the base of its memory arena. This is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1621 ensured by making all allocations from the the `lowest' part of any |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1622 found chunk. Further, no free chunk physically borders another one, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1623 so each free chunk is known to be preceded and followed by either |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1624 inuse chunks or the ends of memory. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1625 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1626 Note that the `foot' of the current chunk is actually represented |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1627 as the prev_foot of the NEXT chunk. This makes it easier to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1628 deal with alignments etc but can be very confusing when trying |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1629 to extend or adapt this code. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1630 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1631 The exceptions to all this are |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1632 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1633 1. The special chunk `top' is the top-most available chunk (i.e., |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1634 the one bordering the end of available memory). It is treated |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1635 specially. Top is never included in any bin, is used only if |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1636 no other chunk is available, and is released back to the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1637 system if it is very large (see M_TRIM_THRESHOLD). In effect, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1638 the top chunk is treated as larger (and thus less well |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1639 fitting) than any other available chunk. The top chunk |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1640 doesn't update its trailing size field since there is no next |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1641 contiguous chunk that would have to index off it. However, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1642 space is still allocated for it (TOP_FOOT_SIZE) to enable |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1643 separation or merging when space is extended. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1644 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1645 3. Chunks allocated via mmap, which have the lowest-order bit |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1646 (IS_MMAPPED_BIT) set in their prev_foot fields, and do not set |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1647 PINUSE_BIT in their head fields. Because they are allocated |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1648 one-by-one, each must carry its own prev_foot field, which is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1649 also used to hold the offset this chunk has within its mmapped |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1650 region, which is needed to preserve alignment. Each mmapped |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1651 chunk is trailed by the first two fields of a fake next-chunk |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1652 for sake of usage checks. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1653 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1654 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1655 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1656 struct malloc_chunk |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1657 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1658 size_t prev_foot; /* Size of previous chunk (if free). */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1659 size_t head; /* Size and inuse bits. */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1660 struct malloc_chunk *fd; /* double links -- used only if free. */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1661 struct malloc_chunk *bk; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1662 }; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1663 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1664 typedef struct malloc_chunk mchunk; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1665 typedef struct malloc_chunk *mchunkptr; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1666 typedef struct malloc_chunk *sbinptr; /* The type of bins of chunks */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1667 typedef size_t bindex_t; /* Described below */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1668 typedef unsigned int binmap_t; /* Described below */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
1669 typedef unsigned int flag_t; /* The type of various bit flag sets */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1670 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1671 /* ------------------- Chunks sizes and alignments ----------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1672 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1673 #define MCHUNK_SIZE (sizeof(mchunk)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1674 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1675 #if FOOTERS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1676 #define CHUNK_OVERHEAD (TWO_SIZE_T_SIZES) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1677 #else /* FOOTERS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1678 #define CHUNK_OVERHEAD (SIZE_T_SIZE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1679 #endif /* FOOTERS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1680 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1681 /* MMapped chunks need a second word of overhead ... */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1682 #define MMAP_CHUNK_OVERHEAD (TWO_SIZE_T_SIZES) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1683 /* ... and additional padding for fake next-chunk at foot */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1684 #define MMAP_FOOT_PAD (FOUR_SIZE_T_SIZES) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1685 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1686 /* The smallest size we can malloc is an aligned minimal chunk */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1687 #define MIN_CHUNK_SIZE\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1688 ((MCHUNK_SIZE + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1689 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1690 /* conversion from malloc headers to user pointers, and back */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1691 #define chunk2mem(p) ((void*)((char*)(p) + TWO_SIZE_T_SIZES)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1692 #define mem2chunk(mem) ((mchunkptr)((char*)(mem) - TWO_SIZE_T_SIZES)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1693 /* chunk associated with aligned address A */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1694 #define align_as_chunk(A) (mchunkptr)((A) + align_offset(chunk2mem(A))) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1695 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1696 /* Bounds on request (not chunk) sizes. */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1697 #define MAX_REQUEST ((-MIN_CHUNK_SIZE) << 2) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1698 #define MIN_REQUEST (MIN_CHUNK_SIZE - CHUNK_OVERHEAD - SIZE_T_ONE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1699 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1700 /* pad request bytes into a usable size */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1701 #define pad_request(req) \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1702 (((req) + CHUNK_OVERHEAD + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1703 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1704 /* pad request, checking for minimum (but not maximum) */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1705 #define request2size(req) \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1706 (((req) < MIN_REQUEST)? MIN_CHUNK_SIZE : pad_request(req)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1707 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1708 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1709 /* ------------------ Operations on head and foot fields ----------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1710 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1711 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1712 The head field of a chunk is or'ed with PINUSE_BIT when previous |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1713 adjacent chunk in use, and or'ed with CINUSE_BIT if this chunk is in |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1714 use. If the chunk was obtained with mmap, the prev_foot field has |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1715 IS_MMAPPED_BIT set, otherwise holding the offset of the base of the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1716 mmapped region to the base of the chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1717 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1718 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1719 #define PINUSE_BIT (SIZE_T_ONE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1720 #define CINUSE_BIT (SIZE_T_TWO) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1721 #define INUSE_BITS (PINUSE_BIT|CINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1722 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1723 /* Head value for fenceposts */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1724 #define FENCEPOST_HEAD (INUSE_BITS|SIZE_T_SIZE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1725 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1726 /* extraction of fields from head words */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1727 #define cinuse(p) ((p)->head & CINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1728 #define pinuse(p) ((p)->head & PINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1729 #define chunksize(p) ((p)->head & ~(INUSE_BITS)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1730 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1731 #define clear_pinuse(p) ((p)->head &= ~PINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1732 #define clear_cinuse(p) ((p)->head &= ~CINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1733 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1734 /* Treat space at ptr +/- offset as a chunk */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1735 #define chunk_plus_offset(p, s) ((mchunkptr)(((char*)(p)) + (s))) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1736 #define chunk_minus_offset(p, s) ((mchunkptr)(((char*)(p)) - (s))) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1737 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1738 /* Ptr to next or previous physical malloc_chunk. */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1739 #define next_chunk(p) ((mchunkptr)( ((char*)(p)) + ((p)->head & ~INUSE_BITS))) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1740 #define prev_chunk(p) ((mchunkptr)( ((char*)(p)) - ((p)->prev_foot) )) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1741 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1742 /* extract next chunk's pinuse bit */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1743 #define next_pinuse(p) ((next_chunk(p)->head) & PINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1744 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1745 /* Get/set size at footer */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1746 #define get_foot(p, s) (((mchunkptr)((char*)(p) + (s)))->prev_foot) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1747 #define set_foot(p, s) (((mchunkptr)((char*)(p) + (s)))->prev_foot = (s)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1748 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1749 /* Set size, pinuse bit, and foot */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1750 #define set_size_and_pinuse_of_free_chunk(p, s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1751 ((p)->head = (s|PINUSE_BIT), set_foot(p, s)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1752 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1753 /* Set size, pinuse bit, foot, and clear next pinuse */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1754 #define set_free_with_pinuse(p, s, n)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1755 (clear_pinuse(n), set_size_and_pinuse_of_free_chunk(p, s)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1756 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1757 #define is_mmapped(p)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1758 (!((p)->head & PINUSE_BIT) && ((p)->prev_foot & IS_MMAPPED_BIT)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1759 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1760 /* Get the internal overhead associated with chunk p */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1761 #define overhead_for(p)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1762 (is_mmapped(p)? MMAP_CHUNK_OVERHEAD : CHUNK_OVERHEAD) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1763 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1764 /* Return true if malloced space is not necessarily cleared */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1765 #if MMAP_CLEARS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1766 #define calloc_must_clear(p) (!is_mmapped(p)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1767 #else /* MMAP_CLEARS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1768 #define calloc_must_clear(p) (1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1769 #endif /* MMAP_CLEARS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1770 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1771 /* ---------------------- Overlaid data structures ----------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1772 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1773 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1774 When chunks are not in use, they are treated as nodes of either |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1775 lists or trees. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1776 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1777 "Small" chunks are stored in circular doubly-linked lists, and look |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1778 like this: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1779 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1780 chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1781 | Size of previous chunk | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1782 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1783 `head:' | Size of chunk, in bytes |P| |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1784 mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1785 | Forward pointer to next chunk in list | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1786 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1787 | Back pointer to previous chunk in list | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1788 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1789 | Unused space (may be 0 bytes long) . |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1790 . . |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1791 . | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1792 nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1793 `foot:' | Size of chunk, in bytes | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1794 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1795 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1796 Larger chunks are kept in a form of bitwise digital trees (aka |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1797 tries) keyed on chunksizes. Because malloc_tree_chunks are only for |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1798 free chunks greater than 256 bytes, their size doesn't impose any |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1799 constraints on user chunk sizes. Each node looks like: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1800 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1801 chunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1802 | Size of previous chunk | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1803 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1804 `head:' | Size of chunk, in bytes |P| |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1805 mem-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1806 | Forward pointer to next chunk of same size | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1807 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1808 | Back pointer to previous chunk of same size | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1809 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1810 | Pointer to left child (child[0]) | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1811 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1812 | Pointer to right child (child[1]) | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1813 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1814 | Pointer to parent | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1815 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1816 | bin index of this chunk | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1817 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1818 | Unused space . |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1819 . | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1820 nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1821 `foot:' | Size of chunk, in bytes | |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1822 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1823 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1824 Each tree holding treenodes is a tree of unique chunk sizes. Chunks |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1825 of the same size are arranged in a circularly-linked list, with only |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1826 the oldest chunk (the next to be used, in our FIFO ordering) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1827 actually in the tree. (Tree members are distinguished by a non-null |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1828 parent pointer.) If a chunk with the same size an an existing node |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1829 is inserted, it is linked off the existing node using pointers that |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1830 work in the same way as fd/bk pointers of small chunks. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1831 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1832 Each tree contains a power of 2 sized range of chunk sizes (the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1833 smallest is 0x100 <= x < 0x180), which is is divided in half at each |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1834 tree level, with the chunks in the smaller half of the range (0x100 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1835 <= x < 0x140 for the top nose) in the left subtree and the larger |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1836 half (0x140 <= x < 0x180) in the right subtree. This is, of course, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1837 done by inspecting individual bits. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1838 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1839 Using these rules, each node's left subtree contains all smaller |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1840 sizes than its right subtree. However, the node at the root of each |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1841 subtree has no particular ordering relationship to either. (The |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1842 dividing line between the subtree sizes is based on trie relation.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1843 If we remove the last chunk of a given size from the interior of the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1844 tree, we need to replace it with a leaf node. The tree ordering |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1845 rules permit a node to be replaced by any leaf below it. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1846 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1847 The smallest chunk in a tree (a common operation in a best-fit |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1848 allocator) can be found by walking a path to the leftmost leaf in |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1849 the tree. Unlike a usual binary tree, where we follow left child |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1850 pointers until we reach a null, here we follow the right child |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1851 pointer any time the left one is null, until we reach a leaf with |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1852 both child pointers null. The smallest chunk in the tree will be |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1853 somewhere along that path. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1854 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
1855 The worst case number of steps to add, find, or remove a node is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1856 bounded by the number of bits differentiating chunks within |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1857 bins. Under current bin calculations, this ranges from 6 up to 21 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
1858 (for 32 bit sizes) or up to 53 (for 64 bit sizes). The typical case |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1859 is of course much better. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1860 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1861 |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1862 struct malloc_tree_chunk |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1863 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1864 /* The first four fields must be compatible with malloc_chunk */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1865 size_t prev_foot; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1866 size_t head; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1867 struct malloc_tree_chunk *fd; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1868 struct malloc_tree_chunk *bk; |
|
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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1869 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1870 struct malloc_tree_chunk *child[2]; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1871 struct malloc_tree_chunk *parent; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1872 bindex_t index; |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1873 }; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1874 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1875 typedef struct malloc_tree_chunk tchunk; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
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|
1876 typedef struct malloc_tree_chunk *tchunkptr; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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|
1877 typedef struct malloc_tree_chunk *tbinptr; /* The type of bins of trees */ |
|
1330
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parents:
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|
1878 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1879 /* A little helper macro for trees */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1880 #define leftmost_child(t) ((t)->child[0] != 0? (t)->child[0] : (t)->child[1]) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1881 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1882 /* ----------------------------- Segments -------------------------------- */ |
|
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parents:
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1883 |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1884 /* |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1885 Each malloc space may include non-contiguous segments, held in a |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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1886 list headed by an embedded malloc_segment record representing the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1887 top-most space. Segments also include flags holding properties of |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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1888 the space. Large chunks that are directly allocated by mmap are not |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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1889 included in this list. They are instead independently created and |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
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1890 destroyed without otherwise keeping track of them. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1891 |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1892 Segment management mainly comes into play for spaces allocated by |
|
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|
1893 MMAP. Any call to MMAP might or might not return memory that is |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1894 adjacent to an existing segment. MORECORE normally contiguously |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1895 extends the current space, so this space is almost always adjacent, |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
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1896 which is simpler and faster to deal with. (This is why MORECORE is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1897 used preferentially to MMAP when both are available -- see |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1898 sys_alloc.) When allocating using MMAP, we don't use any of the |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1899 hinting mechanisms (inconsistently) supported in various |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1900 implementations of unix mmap, or distinguish reserving from |
|
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1901 committing memory. Instead, we just ask for space, and exploit |
|
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1902 contiguity when we get it. It is probably possible to do |
|
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1903 better than this on some systems, but no general scheme seems |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1904 to be significantly better. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1905 |
|
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1906 Management entails a simpler variant of the consolidation scheme |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1907 used for chunks to reduce fragmentation -- new adjacent memory is |
|
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parents:
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1908 normally prepended or appended to an existing segment. However, |
|
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1909 there are limitations compared to chunk consolidation that mostly |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1910 reflect the fact that segment processing is relatively infrequent |
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It's now possible to build SDL without any C runtime at all on Windows,
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1911 (occurring only when getting memory from system) and that we |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1912 don't expect to have huge numbers of segments: |
|
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1913 |
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1914 * Segments are not indexed, so traversal requires linear scans. (It |
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It's now possible to build SDL without any C runtime at all on Windows,
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1915 would be possible to index these, but is not worth the extra |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1916 overhead and complexity for most programs on most platforms.) |
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1917 * New segments are only appended to old ones when holding top-most |
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1918 memory; if they cannot be prepended to others, they are held in |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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1919 different segments. |
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It's now possible to build SDL without any C runtime at all on Windows,
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1920 |
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1921 Except for the top-most segment of an mstate, each segment record |
|
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1922 is kept at the tail of its segment. Segments are added by pushing |
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1923 segment records onto the list headed by &mstate.seg for the |
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1924 containing mstate. |
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1925 |
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1926 Segment flags control allocation/merge/deallocation policies: |
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1927 * If EXTERN_BIT set, then we did not allocate this segment, |
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1928 and so should not try to deallocate or merge with others. |
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1929 (This currently holds only for the initial segment passed |
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1930 into create_mspace_with_base.) |
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1931 * If IS_MMAPPED_BIT set, the segment may be merged with |
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1932 other surrounding mmapped segments and trimmed/de-allocated |
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1933 using munmap. |
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1934 * If neither bit is set, then the segment was obtained using |
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1935 MORECORE so can be merged with surrounding MORECORE'd segments |
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1936 and deallocated/trimmed using MORECORE with negative arguments. |
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1937 */ |
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1938 |
|
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1939 struct malloc_segment |
|
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1940 { |
|
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1941 char *base; /* base address */ |
|
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1942 size_t size; /* allocated size */ |
|
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1943 struct malloc_segment *next; /* ptr to next segment */ |
|
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1944 flag_t sflags; /* mmap and extern flag */ |
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1945 }; |
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1946 |
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1947 #define is_mmapped_segment(S) ((S)->sflags & IS_MMAPPED_BIT) |
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1948 #define is_extern_segment(S) ((S)->sflags & EXTERN_BIT) |
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1949 |
|
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1950 typedef struct malloc_segment msegment; |
|
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1951 typedef struct malloc_segment *msegmentptr; |
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1952 |
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1953 /* ---------------------------- malloc_state ----------------------------- */ |
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1954 |
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1955 /* |
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1956 A malloc_state holds all of the bookkeeping for a space. |
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1957 The main fields are: |
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1958 |
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|
1959 Top |
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|
1960 The topmost chunk of the currently active segment. Its size is |
|
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|
1961 cached in topsize. The actual size of topmost space is |
|
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|
1962 topsize+TOP_FOOT_SIZE, which includes space reserved for adding |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1963 fenceposts and segment records if necessary when getting more |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1964 space from the system. The size at which to autotrim top is |
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It's now possible to build SDL without any C runtime at all on Windows,
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1965 cached from mparams in trim_check, except that it is disabled if |
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It's now possible to build SDL without any C runtime at all on Windows,
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1966 an autotrim fails. |
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1967 |
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1968 Designated victim (dv) |
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1969 This is the preferred chunk for servicing small requests that |
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parents:
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1970 don't have exact fits. It is normally the chunk split off most |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1971 recently to service another small request. Its size is cached in |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1972 dvsize. The link fields of this chunk are not maintained since it |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1973 is not kept in a bin. |
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parents:
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1974 |
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|
1975 SmallBins |
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1976 An array of bin headers for free chunks. These bins hold chunks |
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1977 with sizes less than MIN_LARGE_SIZE bytes. Each bin contains |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1978 chunks of all the same size, spaced 8 bytes apart. To simplify |
|
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parents:
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1979 use in double-linked lists, each bin header acts as a malloc_chunk |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1980 pointing to the real first node, if it exists (else pointing to |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1981 itself). This avoids special-casing for headers. But to avoid |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1982 waste, we allocate only the fd/bk pointers of bins, and then use |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1983 repositioning tricks to treat these as the fields of a chunk. |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1984 |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1985 TreeBins |
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|
1986 Treebins are pointers to the roots of trees holding a range of |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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1987 sizes. There are 2 equally spaced treebins for each power of two |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1988 from TREE_SHIFT to TREE_SHIFT+16. The last bin holds anything |
|
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|
1989 larger. |
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parents:
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|
1990 |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1991 Bin maps |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1992 There is one bit map for small bins ("smallmap") and one for |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1993 treebins ("treemap). Each bin sets its bit when non-empty, and |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1994 clears the bit when empty. Bit operations are then used to avoid |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
1995 bin-by-bin searching -- nearly all "search" is done without ever |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
1996 looking at bins that won't be selected. The bit maps |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1997 conservatively use 32 bits per map word, even if on 64bit system. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1998 For a good description of some of the bit-based techniques used |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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|
1999 here, see Henry S. Warren Jr's book "Hacker's Delight" (and |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
2000 supplement at http://hackersdelight.org/). Many of these are |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
2001 intended to reduce the branchiness of paths through malloc etc, as |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
2002 well as to reduce the number of memory locations read or written. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
2003 |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2004 Segments |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
2005 A list of segments headed by an embedded malloc_segment record |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
2006 representing the initial space. |
|
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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|
2007 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2008 Address check support |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2009 The least_addr field is the least address ever obtained from |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2010 MORECORE or MMAP. Attempted frees and reallocs of any address less |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2011 than this are trapped (unless INSECURE is defined). |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
2012 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
2013 Magic tag |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2014 A cross-check field that should always hold same value as mparams.magic. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2015 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2016 Flags |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2017 Bits recording whether to use MMAP, locks, or contiguous MORECORE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2018 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2019 Statistics |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2020 Each space keeps track of current and maximum system memory |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2021 obtained via MORECORE or MMAP. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2022 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2023 Locking |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2024 If USE_LOCKS is defined, the "mutex" lock is acquired and released |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2025 around every public call using this mspace. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2026 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2027 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2028 /* Bin types, widths and sizes */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
2029 #define NSMALLBINS (32U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2030 #define NTREEBINS (32U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
2031 #define SMALLBIN_SHIFT (3U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2032 #define SMALLBIN_WIDTH (SIZE_T_ONE << SMALLBIN_SHIFT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2033 #define TREEBIN_SHIFT (8U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
2034 #define MIN_LARGE_SIZE (SIZE_T_ONE << TREEBIN_SHIFT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2035 #define MAX_SMALL_SIZE (MIN_LARGE_SIZE - SIZE_T_ONE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
2036 #define MAX_SMALL_REQUEST (MAX_SMALL_SIZE - CHUNK_ALIGN_MASK - CHUNK_OVERHEAD) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2037 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2038 struct malloc_state |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2039 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2040 binmap_t smallmap; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2041 binmap_t treemap; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2042 size_t dvsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2043 size_t topsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2044 char *least_addr; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2045 mchunkptr dv; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2046 mchunkptr top; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2047 size_t trim_check; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2048 size_t magic; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2049 mchunkptr smallbins[(NSMALLBINS + 1) * 2]; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2050 tbinptr treebins[NTREEBINS]; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
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|
2051 size_t footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
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|
2052 size_t max_footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2053 flag_t mflags; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2054 #if USE_LOCKS |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2055 MLOCK_T mutex; /* locate lock among fields that rarely change */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2056 #endif /* USE_LOCKS */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2057 msegment seg; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2058 }; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
2059 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2060 typedef struct malloc_state *mstate; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
2061 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2062 /* ------------- Global malloc_state and malloc_params ------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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|
2063 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2064 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2065 malloc_params holds global properties, including those that can be |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2066 dynamically set using mallopt. There is a single instance, mparams, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2067 initialized in init_mparams. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2068 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2069 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2070 struct malloc_params |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
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|
2071 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2072 size_t magic; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2073 size_t page_size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2074 size_t granularity; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2075 size_t mmap_threshold; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2076 size_t trim_threshold; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2077 flag_t default_mflags; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2078 }; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2079 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2080 static struct malloc_params mparams; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2081 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2082 /* The global malloc_state used for all non-"mspace" calls */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2083 static struct malloc_state _gm_; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2084 #define gm (&_gm_) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2085 #define is_global(M) ((M) == &_gm_) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2086 #define is_initialized(M) ((M)->top != 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2087 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2088 /* -------------------------- system alloc setup ------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2089 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2090 /* Operations on mflags */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2091 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2092 #define use_lock(M) ((M)->mflags & USE_LOCK_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2093 #define enable_lock(M) ((M)->mflags |= USE_LOCK_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2094 #define disable_lock(M) ((M)->mflags &= ~USE_LOCK_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2095 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2096 #define use_mmap(M) ((M)->mflags & USE_MMAP_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2097 #define enable_mmap(M) ((M)->mflags |= USE_MMAP_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2098 #define disable_mmap(M) ((M)->mflags &= ~USE_MMAP_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2099 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2100 #define use_noncontiguous(M) ((M)->mflags & USE_NONCONTIGUOUS_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2101 #define disable_contiguous(M) ((M)->mflags |= USE_NONCONTIGUOUS_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2102 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2103 #define set_lock(M,L)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2104 ((M)->mflags = (L)?\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2105 ((M)->mflags | USE_LOCK_BIT) :\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2106 ((M)->mflags & ~USE_LOCK_BIT)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2107 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2108 /* page-align a size */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2109 #define page_align(S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2110 (((S) + (mparams.page_size)) & ~(mparams.page_size - SIZE_T_ONE)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2111 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2112 /* granularity-align a size */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2113 #define granularity_align(S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2114 (((S) + (mparams.granularity)) & ~(mparams.granularity - SIZE_T_ONE)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2115 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2116 #define is_page_aligned(S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2117 (((size_t)(S) & (mparams.page_size - SIZE_T_ONE)) == 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2118 #define is_granularity_aligned(S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2119 (((size_t)(S) & (mparams.granularity - SIZE_T_ONE)) == 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2120 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2121 /* True if segment S holds address A */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2122 #define segment_holds(S, A)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2123 ((char*)(A) >= S->base && (char*)(A) < S->base + S->size) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2124 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2125 /* Return segment holding given address */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2126 static msegmentptr |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2127 segment_holding(mstate m, char *addr) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2128 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2129 msegmentptr sp = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2130 for (;;) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2131 if (addr >= sp->base && addr < sp->base + sp->size) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2132 return sp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2133 if ((sp = sp->next) == 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2134 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2135 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2136 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2137 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2138 /* Return true if segment contains a segment link */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2139 static int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2140 has_segment_link(mstate m, msegmentptr ss) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2141 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2142 msegmentptr sp = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2143 for (;;) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2144 if ((char *) sp >= ss->base && (char *) sp < ss->base + ss->size) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2145 return 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2146 if ((sp = sp->next) == 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2147 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2148 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2149 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2150 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2151 #ifndef MORECORE_CANNOT_TRIM |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2152 #define should_trim(M,s) ((s) > (M)->trim_check) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2153 #else /* MORECORE_CANNOT_TRIM */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2154 #define should_trim(M,s) (0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2155 #endif /* MORECORE_CANNOT_TRIM */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2156 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2157 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2158 TOP_FOOT_SIZE is padding at the end of a segment, including space |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2159 that may be needed to place segment records and fenceposts when new |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2160 noncontiguous segments are added. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2161 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2162 #define TOP_FOOT_SIZE\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2163 (align_offset(chunk2mem(0))+pad_request(sizeof(struct malloc_segment))+MIN_CHUNK_SIZE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2164 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2165 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2166 /* ------------------------------- Hooks -------------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2167 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2168 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2169 PREACTION should be defined to return 0 on success, and nonzero on |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2170 failure. If you are not using locking, you can redefine these to do |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2171 anything you like. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2172 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2173 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2174 #if USE_LOCKS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2175 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2176 /* Ensure locks are initialized */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2177 #define GLOBALLY_INITIALIZE() (mparams.page_size == 0 && init_mparams()) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2178 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2179 #define PREACTION(M) ((GLOBALLY_INITIALIZE() || use_lock(M))? ACQUIRE_LOCK(&(M)->mutex) : 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2180 #define POSTACTION(M) { if (use_lock(M)) RELEASE_LOCK(&(M)->mutex); } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2181 #else /* USE_LOCKS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2182 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2183 #ifndef PREACTION |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2184 #define PREACTION(M) (0) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2185 #endif /* PREACTION */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2186 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2187 #ifndef POSTACTION |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2188 #define POSTACTION(M) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2189 #endif /* POSTACTION */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2190 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2191 #endif /* USE_LOCKS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2192 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2193 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2194 CORRUPTION_ERROR_ACTION is triggered upon detected bad addresses. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2195 USAGE_ERROR_ACTION is triggered on detected bad frees and |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2196 reallocs. The argument p is an address that might have triggered the |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2197 fault. It is ignored by the two predefined actions, but might be |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2198 useful in custom actions that try to help diagnose errors. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2199 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2200 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2201 #if PROCEED_ON_ERROR |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2202 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2203 /* A count of the number of corruption errors causing resets */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2204 int malloc_corruption_error_count; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2205 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2206 /* default corruption action */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
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|
2207 static void reset_on_error(mstate m); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2208 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2209 #define CORRUPTION_ERROR_ACTION(m) reset_on_error(m) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2210 #define USAGE_ERROR_ACTION(m, p) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2211 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2212 #else /* PROCEED_ON_ERROR */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2213 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2214 #ifndef CORRUPTION_ERROR_ACTION |
|
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2215 #define CORRUPTION_ERROR_ACTION(m) ABORT |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2216 #endif /* CORRUPTION_ERROR_ACTION */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2217 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2218 #ifndef USAGE_ERROR_ACTION |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2219 #define USAGE_ERROR_ACTION(m,p) ABORT |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2220 #endif /* USAGE_ERROR_ACTION */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2221 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2222 #endif /* PROCEED_ON_ERROR */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2223 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2224 /* -------------------------- Debugging setup ---------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2225 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2226 #if ! DEBUG |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2227 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2228 #define check_free_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2229 #define check_inuse_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2230 #define check_malloced_chunk(M,P,N) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2231 #define check_mmapped_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2232 #define check_malloc_state(M) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2233 #define check_top_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2234 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2235 #else /* DEBUG */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2236 #define check_free_chunk(M,P) do_check_free_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2237 #define check_inuse_chunk(M,P) do_check_inuse_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2238 #define check_top_chunk(M,P) do_check_top_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2239 #define check_malloced_chunk(M,P,N) do_check_malloced_chunk(M,P,N) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2240 #define check_mmapped_chunk(M,P) do_check_mmapped_chunk(M,P) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2241 #define check_malloc_state(M) do_check_malloc_state(M) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2242 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2243 static void do_check_any_chunk(mstate m, mchunkptr p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2244 static void do_check_top_chunk(mstate m, mchunkptr p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2245 static void do_check_mmapped_chunk(mstate m, mchunkptr p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2246 static void do_check_inuse_chunk(mstate m, mchunkptr p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2247 static void do_check_free_chunk(mstate m, mchunkptr p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2248 static void do_check_malloced_chunk(mstate m, void *mem, size_t s); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2249 static void do_check_tree(mstate m, tchunkptr t); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2250 static void do_check_treebin(mstate m, bindex_t i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2251 static void do_check_smallbin(mstate m, bindex_t i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2252 static void do_check_malloc_state(mstate m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2253 static int bin_find(mstate m, mchunkptr x); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2254 static size_t traverse_and_check(mstate m); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2255 #endif /* DEBUG */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2256 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2257 /* ---------------------------- Indexing Bins ---------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2258 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2259 #define is_small(s) (((s) >> SMALLBIN_SHIFT) < NSMALLBINS) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2260 #define small_index(s) ((s) >> SMALLBIN_SHIFT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2261 #define small_index2size(i) ((i) << SMALLBIN_SHIFT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2262 #define MIN_SMALL_INDEX (small_index(MIN_CHUNK_SIZE)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2263 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2264 /* addressing by index. See above about smallbin repositioning */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2265 #define smallbin_at(M, i) ((sbinptr)((char*)&((M)->smallbins[(i)<<1]))) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2266 #define treebin_at(M,i) (&((M)->treebins[i])) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2267 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2268 /* assign tree index for size S to variable I */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2269 #if defined(__GNUC__) && defined(i386) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2270 #define compute_tree_index(S, I)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2271 {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2272 size_t X = S >> TREEBIN_SHIFT;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2273 if (X == 0)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2274 I = 0;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2275 else if (X > 0xFFFF)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2276 I = NTREEBINS-1;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2277 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2278 unsigned int K;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2279 __asm__("bsrl %1,%0\n\t" : "=r" (K) : "rm" (X));\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2280 I = (bindex_t)((K << 1) + ((S >> (K + (TREEBIN_SHIFT-1)) & 1)));\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2281 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2282 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2283 #else /* GNUC */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2284 #define compute_tree_index(S, I)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2285 {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2286 size_t X = S >> TREEBIN_SHIFT;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2287 if (X == 0)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2288 I = 0;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2289 else if (X > 0xFFFF)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2290 I = NTREEBINS-1;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2291 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2292 unsigned int Y = (unsigned int)X;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
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|
2293 unsigned int N = ((Y - 0x100) >> 16) & 8;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2294 unsigned int K = (((Y <<= N) - 0x1000) >> 16) & 4;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2295 N += K;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2296 N += K = (((Y <<= K) - 0x4000) >> 16) & 2;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2297 K = 14 - N + ((Y <<= K) >> 15);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2298 I = (K << 1) + ((S >> (K + (TREEBIN_SHIFT-1)) & 1));\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2299 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2300 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2301 #endif /* GNUC */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2302 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2303 /* Bit representing maximum resolved size in a treebin at i */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2304 #define bit_for_tree_index(i) \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2305 (i == NTREEBINS-1)? (SIZE_T_BITSIZE-1) : (((i) >> 1) + TREEBIN_SHIFT - 2) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2306 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2307 /* Shift placing maximum resolved bit in a treebin at i as sign bit */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2308 #define leftshift_for_tree_index(i) \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2309 ((i == NTREEBINS-1)? 0 : \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2310 ((SIZE_T_BITSIZE-SIZE_T_ONE) - (((i) >> 1) + TREEBIN_SHIFT - 2))) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2311 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2312 /* The size of the smallest chunk held in bin with index i */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2313 #define minsize_for_tree_index(i) \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2314 ((SIZE_T_ONE << (((i) >> 1) + TREEBIN_SHIFT)) | \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2315 (((size_t)((i) & SIZE_T_ONE)) << (((i) >> 1) + TREEBIN_SHIFT - 1))) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2316 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2317 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2318 /* ------------------------ Operations on bin maps ----------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2319 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2320 /* bit corresponding to given index */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2321 #define idx2bit(i) ((binmap_t)(1) << (i)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2322 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2323 /* Mark/Clear bits with given index */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2324 #define mark_smallmap(M,i) ((M)->smallmap |= idx2bit(i)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2325 #define clear_smallmap(M,i) ((M)->smallmap &= ~idx2bit(i)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2326 #define smallmap_is_marked(M,i) ((M)->smallmap & idx2bit(i)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2327 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2328 #define mark_treemap(M,i) ((M)->treemap |= idx2bit(i)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2329 #define clear_treemap(M,i) ((M)->treemap &= ~idx2bit(i)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2330 #define treemap_is_marked(M,i) ((M)->treemap & idx2bit(i)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2331 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2332 /* index corresponding to given bit */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2333 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2334 #if defined(__GNUC__) && defined(i386) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2335 #define compute_bit2idx(X, I)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2336 {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2337 unsigned int J;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2338 __asm__("bsfl %1,%0\n\t" : "=r" (J) : "rm" (X));\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2339 I = (bindex_t)J;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2340 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2341 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2342 #else /* GNUC */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2343 #if USE_BUILTIN_FFS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2344 #define compute_bit2idx(X, I) I = ffs(X)-1 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2345 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2346 #else /* USE_BUILTIN_FFS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2347 #define compute_bit2idx(X, I)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2348 {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2349 unsigned int Y = X - 1;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2350 unsigned int K = Y >> (16-4) & 16;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2351 unsigned int N = K; Y >>= K;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2352 N += K = Y >> (8-3) & 8; Y >>= K;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2353 N += K = Y >> (4-2) & 4; Y >>= K;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2354 N += K = Y >> (2-1) & 2; Y >>= K;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2355 N += K = Y >> (1-0) & 1; Y >>= K;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2356 I = (bindex_t)(N + Y);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2357 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2358 #endif /* USE_BUILTIN_FFS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2359 #endif /* GNUC */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2360 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2361 /* isolate the least set bit of a bitmap */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2362 #define least_bit(x) ((x) & -(x)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2363 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2364 /* mask with all bits to left of least bit of x on */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2365 #define left_bits(x) ((x<<1) | -(x<<1)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2366 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2367 /* mask with all bits to left of or equal to least bit of x on */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2368 #define same_or_left_bits(x) ((x) | -(x)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2369 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2370 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2371 /* ----------------------- Runtime Check Support ------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2372 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2373 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2374 For security, the main invariant is that malloc/free/etc never |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2375 writes to a static address other than malloc_state, unless static |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2376 malloc_state itself has been corrupted, which cannot occur via |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2377 malloc (because of these checks). In essence this means that we |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2378 believe all pointers, sizes, maps etc held in malloc_state, but |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2379 check all of those linked or offsetted from other embedded data |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2380 structures. These checks are interspersed with main code in a way |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2381 that tends to minimize their run-time cost. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2382 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2383 When FOOTERS is defined, in addition to range checking, we also |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2384 verify footer fields of inuse chunks, which can be used guarantee |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2385 that the mstate controlling malloc/free is intact. This is a |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2386 streamlined version of the approach described by William Robertson |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2387 et al in "Run-time Detection of Heap-based Overflows" LISA'03 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2388 http://www.usenix.org/events/lisa03/tech/robertson.html The footer |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2389 of an inuse chunk holds the xor of its mstate and a random seed, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2390 that is checked upon calls to free() and realloc(). This is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2391 (probablistically) unguessable from outside the program, but can be |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2392 computed by any code successfully malloc'ing any chunk, so does not |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2393 itself provide protection against code that has already broken |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2394 security through some other means. Unlike Robertson et al, we |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2395 always dynamically check addresses of all offset chunks (previous, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2396 next, etc). This turns out to be cheaper than relying on hashes. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2397 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2398 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2399 #if !INSECURE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2400 /* Check if address a is at least as high as any from MORECORE or MMAP */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2401 #define ok_address(M, a) ((char*)(a) >= (M)->least_addr) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2402 /* Check if address of next chunk n is higher than base chunk p */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2403 #define ok_next(p, n) ((char*)(p) < (char*)(n)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2404 /* Check if p has its cinuse bit on */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2405 #define ok_cinuse(p) cinuse(p) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2406 /* Check if p has its pinuse bit on */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2407 #define ok_pinuse(p) pinuse(p) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2408 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2409 #else /* !INSECURE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2410 #define ok_address(M, a) (1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2411 #define ok_next(b, n) (1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2412 #define ok_cinuse(p) (1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2413 #define ok_pinuse(p) (1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2414 #endif /* !INSECURE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2415 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2416 #if (FOOTERS && !INSECURE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2417 /* Check if (alleged) mstate m has expected magic field */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2418 #define ok_magic(M) ((M)->magic == mparams.magic) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2419 #else /* (FOOTERS && !INSECURE) */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2420 #define ok_magic(M) (1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2421 #endif /* (FOOTERS && !INSECURE) */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2422 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2423 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2424 /* In gcc, use __builtin_expect to minimize impact of checks */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2425 #if !INSECURE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2426 #if defined(__GNUC__) && __GNUC__ >= 3 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2427 #define RTCHECK(e) __builtin_expect(e, 1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2428 #else /* GNUC */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2429 #define RTCHECK(e) (e) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2430 #endif /* GNUC */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2431 #else /* !INSECURE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2432 #define RTCHECK(e) (1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2433 #endif /* !INSECURE */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2434 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2435 /* macros to set up inuse chunks with or without footers */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2436 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2437 #if !FOOTERS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2438 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2439 #define mark_inuse_foot(M,p,s) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2440 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2441 /* Set cinuse bit and pinuse bit of next chunk */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2442 #define set_inuse(M,p,s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2443 ((p)->head = (((p)->head & PINUSE_BIT)|s|CINUSE_BIT),\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2444 ((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2445 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2446 /* Set cinuse and pinuse of this chunk and pinuse of next chunk */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2447 #define set_inuse_and_pinuse(M,p,s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2448 ((p)->head = (s|PINUSE_BIT|CINUSE_BIT),\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2449 ((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2450 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2451 /* Set size, cinuse and pinuse bit of this chunk */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2452 #define set_size_and_pinuse_of_inuse_chunk(M, p, s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2453 ((p)->head = (s|PINUSE_BIT|CINUSE_BIT)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2454 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2455 #else /* FOOTERS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2456 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2457 /* Set foot of inuse chunk to be xor of mstate and seed */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2458 #define mark_inuse_foot(M,p,s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2459 (((mchunkptr)((char*)(p) + (s)))->prev_foot = ((size_t)(M) ^ mparams.magic)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2460 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2461 #define get_mstate_for(p)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2462 ((mstate)(((mchunkptr)((char*)(p) +\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2463 (chunksize(p))))->prev_foot ^ mparams.magic)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2464 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2465 #define set_inuse(M,p,s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2466 ((p)->head = (((p)->head & PINUSE_BIT)|s|CINUSE_BIT),\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2467 (((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT), \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2468 mark_inuse_foot(M,p,s)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2469 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2470 #define set_inuse_and_pinuse(M,p,s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2471 ((p)->head = (s|PINUSE_BIT|CINUSE_BIT),\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2472 (((mchunkptr)(((char*)(p)) + (s)))->head |= PINUSE_BIT),\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2473 mark_inuse_foot(M,p,s)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2474 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2475 #define set_size_and_pinuse_of_inuse_chunk(M, p, s)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2476 ((p)->head = (s|PINUSE_BIT|CINUSE_BIT),\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2477 mark_inuse_foot(M, p, s)) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2478 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2479 #endif /* !FOOTERS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2480 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2481 /* ---------------------------- setting mparams -------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2482 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2483 /* Initialize mparams */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2484 static int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2485 init_mparams(void) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2486 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2487 if (mparams.page_size == 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2488 size_t s; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2489 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2490 mparams.mmap_threshold = DEFAULT_MMAP_THRESHOLD; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2491 mparams.trim_threshold = DEFAULT_TRIM_THRESHOLD; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2492 #if MORECORE_CONTIGUOUS |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2493 mparams.default_mflags = USE_LOCK_BIT | USE_MMAP_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2494 #else /* MORECORE_CONTIGUOUS */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2495 mparams.default_mflags = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2496 USE_LOCK_BIT | USE_MMAP_BIT | USE_NONCONTIGUOUS_BIT; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2497 #endif /* MORECORE_CONTIGUOUS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2498 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2499 #if (FOOTERS && !INSECURE) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2500 { |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2501 #if USE_DEV_RANDOM |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2502 int fd; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2503 unsigned char buf[sizeof(size_t)]; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2504 /* Try to use /dev/urandom, else fall back on using time */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2505 if ((fd = open("/dev/urandom", O_RDONLY)) >= 0 && |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2506 read(fd, buf, sizeof(buf)) == sizeof(buf)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2507 s = *((size_t *) buf); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2508 close(fd); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2509 } else |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2510 #endif /* USE_DEV_RANDOM */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2511 s = (size_t) (time(0) ^ (size_t) 0x55555555U); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2512 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2513 s |= (size_t) 8U; /* ensure nonzero */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2514 s &= ~(size_t) 7U; /* improve chances of fault for bad values */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2515 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2516 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2517 #else /* (FOOTERS && !INSECURE) */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2518 s = (size_t) 0x58585858U; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2519 #endif /* (FOOTERS && !INSECURE) */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2520 ACQUIRE_MAGIC_INIT_LOCK(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2521 if (mparams.magic == 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2522 mparams.magic = s; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2523 /* Set up lock for main malloc area */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2524 INITIAL_LOCK(&gm->mutex); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2525 gm->mflags = mparams.default_mflags; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2526 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2527 RELEASE_MAGIC_INIT_LOCK(); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2528 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2529 #ifndef WIN32 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2530 mparams.page_size = malloc_getpagesize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2531 mparams.granularity = ((DEFAULT_GRANULARITY != 0) ? |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2532 DEFAULT_GRANULARITY : mparams.page_size); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2533 #else /* WIN32 */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2534 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2535 SYSTEM_INFO system_info; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2536 GetSystemInfo(&system_info); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2537 mparams.page_size = system_info.dwPageSize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2538 mparams.granularity = system_info.dwAllocationGranularity; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2539 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2540 #endif /* WIN32 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2541 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2542 /* Sanity-check configuration: |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2543 size_t must be unsigned and as wide as pointer type. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2544 ints must be at least 4 bytes. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2545 alignment must be at least 8. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2546 Alignment, min chunk size, and page size must all be powers of 2. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2547 */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2548 if ((sizeof(size_t) != sizeof(char *)) || |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2549 (MAX_SIZE_T < MIN_CHUNK_SIZE) || |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2550 (sizeof(int) < 4) || |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2551 (MALLOC_ALIGNMENT < (size_t) 8U) || |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2552 ((MALLOC_ALIGNMENT & (MALLOC_ALIGNMENT - SIZE_T_ONE)) != 0) || |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2553 ((MCHUNK_SIZE & (MCHUNK_SIZE - SIZE_T_ONE)) != 0) || |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2554 ((mparams.granularity & (mparams.granularity - SIZE_T_ONE)) != 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2555 || ((mparams.page_size & (mparams.page_size - SIZE_T_ONE)) != 0)) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2556 ABORT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2557 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2558 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2559 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2560 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2561 /* support for mallopt */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2562 static int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2563 change_mparam(int param_number, int value) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2564 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2565 size_t val = (size_t) value; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2566 init_mparams(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2567 switch (param_number) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2568 case M_TRIM_THRESHOLD: |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2569 mparams.trim_threshold = val; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2570 return 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2571 case M_GRANULARITY: |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2572 if (val >= mparams.page_size && ((val & (val - 1)) == 0)) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2573 mparams.granularity = val; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2574 return 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2575 } else |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2576 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2577 case M_MMAP_THRESHOLD: |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2578 mparams.mmap_threshold = val; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2579 return 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2580 default: |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2581 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2582 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2583 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2584 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2585 #if DEBUG |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2586 /* ------------------------- Debugging Support --------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2587 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2588 /* Check properties of any chunk, whether free, inuse, mmapped etc */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2589 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2590 do_check_any_chunk(mstate m, mchunkptr p) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2591 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2592 assert((is_aligned(chunk2mem(p))) || (p->head == FENCEPOST_HEAD)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2593 assert(ok_address(m, p)); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2594 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2595 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2596 /* Check properties of top chunk */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2597 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2598 do_check_top_chunk(mstate m, mchunkptr p) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2599 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2600 msegmentptr sp = segment_holding(m, (char *) p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2601 size_t sz = chunksize(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2602 assert(sp != 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2603 assert((is_aligned(chunk2mem(p))) || (p->head == FENCEPOST_HEAD)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2604 assert(ok_address(m, p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2605 assert(sz == m->topsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2606 assert(sz > 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2607 assert(sz == ((sp->base + sp->size) - (char *) p) - TOP_FOOT_SIZE); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2608 assert(pinuse(p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2609 assert(!next_pinuse(p)); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2610 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2611 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2612 /* Check properties of (inuse) mmapped chunks */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2613 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2614 do_check_mmapped_chunk(mstate m, mchunkptr p) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2615 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2616 size_t sz = chunksize(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2617 size_t len = (sz + (p->prev_foot & ~IS_MMAPPED_BIT) + MMAP_FOOT_PAD); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2618 assert(is_mmapped(p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2619 assert(use_mmap(m)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2620 assert((is_aligned(chunk2mem(p))) || (p->head == FENCEPOST_HEAD)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2621 assert(ok_address(m, p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2622 assert(!is_small(sz)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2623 assert((len & (mparams.page_size - SIZE_T_ONE)) == 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2624 assert(chunk_plus_offset(p, sz)->head == FENCEPOST_HEAD); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2625 assert(chunk_plus_offset(p, sz + SIZE_T_SIZE)->head == 0); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2626 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2627 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2628 /* Check properties of inuse chunks */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2629 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2630 do_check_inuse_chunk(mstate m, mchunkptr p) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2631 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2632 do_check_any_chunk(m, p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2633 assert(cinuse(p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2634 assert(next_pinuse(p)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2635 /* If not pinuse and not mmapped, previous chunk has OK offset */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2636 assert(is_mmapped(p) || pinuse(p) || next_chunk(prev_chunk(p)) == p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2637 if (is_mmapped(p)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2638 do_check_mmapped_chunk(m, p); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2639 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2640 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2641 /* Check properties of free chunks */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2642 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2643 do_check_free_chunk(mstate m, mchunkptr p) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2644 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2645 size_t sz = p->head & ~(PINUSE_BIT | CINUSE_BIT); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2646 mchunkptr next = chunk_plus_offset(p, sz); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2647 do_check_any_chunk(m, p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2648 assert(!cinuse(p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2649 assert(!next_pinuse(p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2650 assert(!is_mmapped(p)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2651 if (p != m->dv && p != m->top) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2652 if (sz >= MIN_CHUNK_SIZE) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2653 assert((sz & CHUNK_ALIGN_MASK) == 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2654 assert(is_aligned(chunk2mem(p))); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2655 assert(next->prev_foot == sz); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2656 assert(pinuse(p)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2657 assert(next == m->top || cinuse(next)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2658 assert(p->fd->bk == p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2659 assert(p->bk->fd == p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2660 } else /* markers are always of size SIZE_T_SIZE */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2661 assert(sz == SIZE_T_SIZE); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2662 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2663 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2664 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2665 /* Check properties of malloced chunks at the point they are malloced */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2666 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2667 do_check_malloced_chunk(mstate m, void *mem, size_t s) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2668 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2669 if (mem != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2670 mchunkptr p = mem2chunk(mem); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2671 size_t sz = p->head & ~(PINUSE_BIT | CINUSE_BIT); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2672 do_check_inuse_chunk(m, p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2673 assert((sz & CHUNK_ALIGN_MASK) == 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2674 assert(sz >= MIN_CHUNK_SIZE); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2675 assert(sz >= s); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2676 /* unless mmapped, size is less than MIN_CHUNK_SIZE more than request */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2677 assert(is_mmapped(p) || sz < (s + MIN_CHUNK_SIZE)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2678 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2679 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2680 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2681 /* Check a tree and its subtrees. */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2682 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2683 do_check_tree(mstate m, tchunkptr t) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2684 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2685 tchunkptr head = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2686 tchunkptr u = t; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2687 bindex_t tindex = t->index; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2688 size_t tsize = chunksize(t); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2689 bindex_t idx; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2690 compute_tree_index(tsize, idx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2691 assert(tindex == idx); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2692 assert(tsize >= MIN_LARGE_SIZE); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2693 assert(tsize >= minsize_for_tree_index(idx)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2694 assert((idx == NTREEBINS - 1) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2695 || (tsize < minsize_for_tree_index((idx + 1)))); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2696 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2697 do { /* traverse through chain of same-sized nodes */ |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2698 do_check_any_chunk(m, ((mchunkptr) u)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2699 assert(u->index == tindex); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2700 assert(chunksize(u) == tsize); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2701 assert(!cinuse(u)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2702 assert(!next_pinuse(u)); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2703 assert(u->fd->bk == u); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2704 assert(u->bk->fd == u); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2705 if (u->parent == 0) { |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2706 assert(u->child[0] == 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2707 assert(u->child[1] == 0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2708 } else { |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2709 assert(head == 0); /* only one node on chain has parent */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2710 head = u; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2711 assert(u->parent != u); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2712 assert(u->parent->child[0] == u || |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2713 u->parent->child[1] == u || |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2714 *((tbinptr *) (u->parent)) == u); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2715 if (u->child[0] != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2716 assert(u->child[0]->parent == u); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2717 assert(u->child[0] != u); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2718 do_check_tree(m, u->child[0]); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2719 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2720 if (u->child[1] != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2721 assert(u->child[1]->parent == u); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2722 assert(u->child[1] != u); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2723 do_check_tree(m, u->child[1]); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2724 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2725 if (u->child[0] != 0 && u->child[1] != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2726 assert(chunksize(u->child[0]) < chunksize(u->child[1])); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2727 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2728 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2729 u = u->fd; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2730 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2731 while (u != t); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2732 assert(head != 0); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2733 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2734 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2735 /* Check all the chunks in a treebin. */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2736 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2737 do_check_treebin(mstate m, bindex_t i) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2738 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2739 tbinptr *tb = treebin_at(m, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2740 tchunkptr t = *tb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2741 int empty = (m->treemap & (1U << i)) == 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2742 if (t == 0) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2743 assert(empty); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2744 if (!empty) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2745 do_check_tree(m, t); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2746 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2747 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2748 /* Check all the chunks in a smallbin. */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2749 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2750 do_check_smallbin(mstate m, bindex_t i) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2751 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2752 sbinptr b = smallbin_at(m, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2753 mchunkptr p = b->bk; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2754 unsigned int empty = (m->smallmap & (1U << i)) == 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2755 if (p == b) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2756 assert(empty); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2757 if (!empty) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2758 for (; p != b; p = p->bk) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2759 size_t size = chunksize(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2760 mchunkptr q; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2761 /* each chunk claims to be free */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2762 do_check_free_chunk(m, p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2763 /* chunk belongs in bin */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2764 assert(small_index(size) == i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2765 assert(p->bk == b || chunksize(p->bk) == chunksize(p)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2766 /* chunk is followed by an inuse chunk */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2767 q = next_chunk(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2768 if (q->head != FENCEPOST_HEAD) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2769 do_check_inuse_chunk(m, q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2770 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2771 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2772 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2773 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2774 /* Find x in a bin. Used in other check functions. */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2775 static int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2776 bin_find(mstate m, mchunkptr x) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2777 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2778 size_t size = chunksize(x); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2779 if (is_small(size)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2780 bindex_t sidx = small_index(size); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2781 sbinptr b = smallbin_at(m, sidx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2782 if (smallmap_is_marked(m, sidx)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2783 mchunkptr p = b; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2784 do { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2785 if (p == x) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2786 return 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2787 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2788 while ((p = p->fd) != b); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2789 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2790 } else { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2791 bindex_t tidx; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2792 compute_tree_index(size, tidx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2793 if (treemap_is_marked(m, tidx)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2794 tchunkptr t = *treebin_at(m, tidx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2795 size_t sizebits = size << leftshift_for_tree_index(tidx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2796 while (t != 0 && chunksize(t) != size) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2797 t = t->child[(sizebits >> (SIZE_T_BITSIZE - SIZE_T_ONE)) & 1]; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2798 sizebits <<= 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2799 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2800 if (t != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2801 tchunkptr u = t; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2802 do { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2803 if (u == (tchunkptr) x) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2804 return 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2805 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2806 while ((u = u->fd) != t); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2807 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2808 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2809 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2810 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2811 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2812 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2813 /* Traverse each chunk and check it; return total */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2814 static size_t |
|
1668
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2815 traverse_and_check(mstate m) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2816 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2817 size_t sum = 0; |
|
1668
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2818 if (is_initialized(m)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2819 msegmentptr s = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2820 sum += m->topsize + TOP_FOOT_SIZE; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2821 while (s != 0) { |
|
1668
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parents:
1662
diff
changeset
|
2822 mchunkptr q = align_as_chunk(s->base); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2823 mchunkptr lastq = 0; |
|
1668
4da1ee79c9af
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parents:
1662
diff
changeset
|
2824 assert(pinuse(q)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2825 while (segment_holds(s, q) && |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2826 q != m->top && q->head != FENCEPOST_HEAD) { |
|
1668
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parents:
1662
diff
changeset
|
2827 sum += chunksize(q); |
|
4da1ee79c9af
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parents:
1662
diff
changeset
|
2828 if (cinuse(q)) { |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2829 assert(!bin_find(m, q)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2830 do_check_inuse_chunk(m, q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2831 } else { |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2832 assert(q == m->dv || bin_find(m, q)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2833 assert(lastq == 0 || cinuse(lastq)); /* Not 2 consecutive free */ |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2834 do_check_free_chunk(m, q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2835 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2836 lastq = q; |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2837 q = next_chunk(q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2838 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2839 s = s->next; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2840 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2841 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2842 return sum; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2843 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2844 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2845 /* Check all properties of malloc_state. */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2846 static void |
|
1668
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more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2847 do_check_malloc_state(mstate m) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2848 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2849 bindex_t i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2850 size_t total; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2851 /* check bins */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2852 for (i = 0; i < NSMALLBINS; ++i) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2853 do_check_smallbin(m, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2854 for (i = 0; i < NTREEBINS; ++i) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2855 do_check_treebin(m, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2856 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2857 if (m->dvsize != 0) { /* check dv chunk */ |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2858 do_check_any_chunk(m, m->dv); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2859 assert(m->dvsize == chunksize(m->dv)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2860 assert(m->dvsize >= MIN_CHUNK_SIZE); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2861 assert(bin_find(m, m->dv) == 0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2862 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2863 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2864 if (m->top != 0) { /* check top chunk */ |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2865 do_check_top_chunk(m, m->top); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2866 assert(m->topsize == chunksize(m->top)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2867 assert(m->topsize > 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2868 assert(bin_find(m, m->top) == 0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2869 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2870 |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2871 total = traverse_and_check(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2872 assert(total <= m->footprint); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2873 assert(m->footprint <= m->max_footprint); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2874 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2875 #endif /* DEBUG */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2876 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2877 /* ----------------------------- statistics ------------------------------ */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2878 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2879 #if !NO_MALLINFO |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2880 static struct mallinfo |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2881 internal_mallinfo(mstate m) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2882 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2883 struct mallinfo nm = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
|
1668
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2884 if (!PREACTION(m)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2885 check_malloc_state(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2886 if (is_initialized(m)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2887 size_t nfree = SIZE_T_ONE; /* top always free */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2888 size_t mfree = m->topsize + TOP_FOOT_SIZE; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2889 size_t sum = mfree; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2890 msegmentptr s = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2891 while (s != 0) { |
|
1668
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1662
diff
changeset
|
2892 mchunkptr q = align_as_chunk(s->base); |
|
4da1ee79c9af
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Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2893 while (segment_holds(s, q) && |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2894 q != m->top && q->head != FENCEPOST_HEAD) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2895 size_t sz = chunksize(q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2896 sum += sz; |
|
1668
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1662
diff
changeset
|
2897 if (!cinuse(q)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2898 mfree += sz; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2899 ++nfree; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2900 } |
|
1668
4da1ee79c9af
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1662
diff
changeset
|
2901 q = next_chunk(q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2902 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2903 s = s->next; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2904 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2905 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2906 nm.arena = sum; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2907 nm.ordblks = nfree; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2908 nm.hblkhd = m->footprint - sum; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2909 nm.usmblks = m->max_footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2910 nm.uordblks = m->footprint - mfree; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2911 nm.fordblks = mfree; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2912 nm.keepcost = m->topsize; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2913 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2914 |
|
1668
4da1ee79c9af
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1662
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changeset
|
2915 POSTACTION(m); |
|
1330
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2916 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2917 return nm; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2918 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2919 #endif /* !NO_MALLINFO */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2920 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2921 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2922 internal_malloc_stats(mstate m) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2923 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2924 if (!PREACTION(m)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2925 size_t maxfp = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2926 size_t fp = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2927 size_t used = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2928 check_malloc_state(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2929 if (is_initialized(m)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2930 msegmentptr s = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2931 maxfp = m->max_footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2932 fp = m->footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2933 used = fp - (m->topsize + TOP_FOOT_SIZE); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2934 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2935 while (s != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2936 mchunkptr q = align_as_chunk(s->base); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2937 while (segment_holds(s, q) && |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2938 q != m->top && q->head != FENCEPOST_HEAD) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2939 if (!cinuse(q)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2940 used -= chunksize(q); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2941 q = next_chunk(q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2942 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2943 s = s->next; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2944 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2945 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2946 #ifndef LACKS_STDIO_H |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2947 fprintf(stderr, "max system bytes = %10lu\n", |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2948 (unsigned long) (maxfp)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2949 fprintf(stderr, "system bytes = %10lu\n", (unsigned long) (fp)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2950 fprintf(stderr, "in use bytes = %10lu\n", (unsigned long) (used)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2951 #endif |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
2952 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
2953 POSTACTION(m); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2954 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2955 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2956 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2957 /* ----------------------- Operations on smallbins ----------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2958 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2959 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2960 Various forms of linking and unlinking are defined as macros. Even |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2961 the ones for trees, which are very long but have very short typical |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2962 paths. This is ugly but reduces reliance on inlining support of |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2963 compilers. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2964 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2965 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2966 /* Link a free chunk into a smallbin */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2967 #define insert_small_chunk(M, P, S) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2968 bindex_t I = small_index(S);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2969 mchunkptr B = smallbin_at(M, I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2970 mchunkptr F = B;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2971 assert(S >= MIN_CHUNK_SIZE);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2972 if (!smallmap_is_marked(M, I))\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2973 mark_smallmap(M, I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2974 else if (RTCHECK(ok_address(M, B->fd)))\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2975 F = B->fd;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2976 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2977 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2978 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2979 B->fd = P;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2980 F->bk = P;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2981 P->fd = F;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2982 P->bk = B;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2983 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2984 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2985 /* Unlink a chunk from a smallbin */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2986 #define unlink_small_chunk(M, P, S) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2987 mchunkptr F = P->fd;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2988 mchunkptr B = P->bk;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2989 bindex_t I = small_index(S);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2990 assert(P != B);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2991 assert(P != F);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2992 assert(chunksize(P) == small_index2size(I));\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2993 if (F == B)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2994 clear_smallmap(M, I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2995 else if (RTCHECK((F == smallbin_at(M,I) || ok_address(M, F)) &&\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2996 (B == smallbin_at(M,I) || ok_address(M, B)))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2997 F->bk = B;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2998 B->fd = F;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2999 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3000 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3001 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3002 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3003 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3004 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3005 /* Unlink the first chunk from a smallbin */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3006 #define unlink_first_small_chunk(M, B, P, I) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3007 mchunkptr F = P->fd;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3008 assert(P != B);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3009 assert(P != F);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3010 assert(chunksize(P) == small_index2size(I));\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3011 if (B == F)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3012 clear_smallmap(M, I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3013 else if (RTCHECK(ok_address(M, F))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3014 B->fd = F;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3015 F->bk = B;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3016 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3017 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3018 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3019 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3020 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3021 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3022 /* Replace dv node, binning the old one */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3023 /* Used only when dvsize known to be small */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3024 #define replace_dv(M, P, S) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3025 size_t DVS = M->dvsize;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3026 if (DVS != 0) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3027 mchunkptr DV = M->dv;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3028 assert(is_small(DVS));\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3029 insert_small_chunk(M, DV, DVS);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3030 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3031 M->dvsize = S;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3032 M->dv = P;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3033 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3034 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3035 /* ------------------------- Operations on trees ------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3036 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3037 /* Insert chunk into tree */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3038 #define insert_large_chunk(M, X, S) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3039 tbinptr* H;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3040 bindex_t I;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3041 compute_tree_index(S, I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3042 H = treebin_at(M, I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3043 X->index = I;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3044 X->child[0] = X->child[1] = 0;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3045 if (!treemap_is_marked(M, I)) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3046 mark_treemap(M, I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3047 *H = X;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3048 X->parent = (tchunkptr)H;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3049 X->fd = X->bk = X;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3050 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3051 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3052 tchunkptr T = *H;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3053 size_t K = S << leftshift_for_tree_index(I);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3054 for (;;) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3055 if (chunksize(T) != S) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3056 tchunkptr* C = &(T->child[(K >> (SIZE_T_BITSIZE-SIZE_T_ONE)) & 1]);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3057 K <<= 1;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3058 if (*C != 0)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3059 T = *C;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3060 else if (RTCHECK(ok_address(M, C))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3061 *C = X;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3062 X->parent = T;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3063 X->fd = X->bk = X;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3064 break;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3065 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3066 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3067 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3068 break;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3069 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3070 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3071 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3072 tchunkptr F = T->fd;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3073 if (RTCHECK(ok_address(M, T) && ok_address(M, F))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3074 T->fd = F->bk = X;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3075 X->fd = F;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3076 X->bk = T;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3077 X->parent = 0;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3078 break;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3079 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3080 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3081 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3082 break;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3083 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3084 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3085 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3086 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3087 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3088 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3089 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3090 Unlink steps: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3091 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3092 1. If x is a chained node, unlink it from its same-sized fd/bk links |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3093 and choose its bk node as its replacement. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3094 2. If x was the last node of its size, but not a leaf node, it must |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3095 be replaced with a leaf node (not merely one with an open left or |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3096 right), to make sure that lefts and rights of descendents |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3097 correspond properly to bit masks. We use the rightmost descendent |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3098 of x. We could use any other leaf, but this is easy to locate and |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3099 tends to counteract removal of leftmosts elsewhere, and so keeps |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3100 paths shorter than minimally guaranteed. This doesn't loop much |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3101 because on average a node in a tree is near the bottom. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3102 3. If x is the base of a chain (i.e., has parent links) relink |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3103 x's parent and children to x's replacement (or null if none). |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3104 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3105 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3106 #define unlink_large_chunk(M, X) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3107 tchunkptr XP = X->parent;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3108 tchunkptr R;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3109 if (X->bk != X) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3110 tchunkptr F = X->fd;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3111 R = X->bk;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3112 if (RTCHECK(ok_address(M, F))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3113 F->bk = R;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3114 R->fd = F;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3115 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3116 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3117 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3118 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3119 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3120 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3121 tchunkptr* RP;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3122 if (((R = *(RP = &(X->child[1]))) != 0) ||\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3123 ((R = *(RP = &(X->child[0]))) != 0)) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3124 tchunkptr* CP;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3125 while ((*(CP = &(R->child[1])) != 0) ||\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3126 (*(CP = &(R->child[0])) != 0)) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3127 R = *(RP = CP);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3128 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3129 if (RTCHECK(ok_address(M, RP)))\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3130 *RP = 0;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3131 else {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3132 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3133 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3134 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3135 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3136 if (XP != 0) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3137 tbinptr* H = treebin_at(M, X->index);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3138 if (X == *H) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3139 if ((*H = R) == 0) \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3140 clear_treemap(M, X->index);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3141 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3142 else if (RTCHECK(ok_address(M, XP))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3143 if (XP->child[0] == X) \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3144 XP->child[0] = R;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3145 else \ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3146 XP->child[1] = R;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3147 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3148 else\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3149 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3150 if (R != 0) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3151 if (RTCHECK(ok_address(M, R))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3152 tchunkptr C0, C1;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3153 R->parent = XP;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3154 if ((C0 = X->child[0]) != 0) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3155 if (RTCHECK(ok_address(M, C0))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3156 R->child[0] = C0;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3157 C0->parent = R;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3158 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3159 else\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3160 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3161 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3162 if ((C1 = X->child[1]) != 0) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3163 if (RTCHECK(ok_address(M, C1))) {\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3164 R->child[1] = C1;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3165 C1->parent = R;\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3166 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3167 else\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3168 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3169 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3170 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3171 else\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3172 CORRUPTION_ERROR_ACTION(M);\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3173 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3174 }\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3175 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3176 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3177 /* Relays to large vs small bin operations */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3178 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3179 #define insert_chunk(M, P, S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3180 if (is_small(S)) insert_small_chunk(M, P, S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3181 else { tchunkptr TP = (tchunkptr)(P); insert_large_chunk(M, TP, S); } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3182 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3183 #define unlink_chunk(M, P, S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3184 if (is_small(S)) unlink_small_chunk(M, P, S)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3185 else { tchunkptr TP = (tchunkptr)(P); unlink_large_chunk(M, TP); } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3186 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3187 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3188 /* Relays to internal calls to malloc/free from realloc, memalign etc */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3189 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3190 #if ONLY_MSPACES |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3191 #define internal_malloc(m, b) mspace_malloc(m, b) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3192 #define internal_free(m, mem) mspace_free(m,mem); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3193 #else /* ONLY_MSPACES */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3194 #if MSPACES |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3195 #define internal_malloc(m, b)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3196 (m == gm)? dlmalloc(b) : mspace_malloc(m, b) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3197 #define internal_free(m, mem)\ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3198 if (m == gm) dlfree(mem); else mspace_free(m,mem); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3199 #else /* MSPACES */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3200 #define internal_malloc(m, b) dlmalloc(b) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3201 #define internal_free(m, mem) dlfree(mem) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3202 #endif /* MSPACES */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3203 #endif /* ONLY_MSPACES */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3204 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3205 /* ----------------------- Direct-mmapping chunks ----------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3206 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3207 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3208 Directly mmapped chunks are set up with an offset to the start of |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3209 the mmapped region stored in the prev_foot field of the chunk. This |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3210 allows reconstruction of the required argument to MUNMAP when freed, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3211 and also allows adjustment of the returned chunk to meet alignment |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3212 requirements (especially in memalign). There is also enough space |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3213 allocated to hold a fake next chunk of size SIZE_T_SIZE to maintain |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3214 the PINUSE bit so frees can be checked. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3215 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3216 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3217 /* Malloc using mmap */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3218 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3219 mmap_alloc(mstate m, size_t nb) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3220 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3221 size_t mmsize = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3222 granularity_align(nb + SIX_SIZE_T_SIZES + CHUNK_ALIGN_MASK); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3223 if (mmsize > nb) { /* Check for wrap around 0 */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3224 char *mm = (char *) (DIRECT_MMAP(mmsize)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3225 if (mm != CMFAIL) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3226 size_t offset = align_offset(chunk2mem(mm)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3227 size_t psize = mmsize - offset - MMAP_FOOT_PAD; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3228 mchunkptr p = (mchunkptr) (mm + offset); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3229 p->prev_foot = offset | IS_MMAPPED_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3230 (p)->head = (psize | CINUSE_BIT); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3231 mark_inuse_foot(m, p, psize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3232 chunk_plus_offset(p, psize)->head = FENCEPOST_HEAD; |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3233 chunk_plus_offset(p, psize + SIZE_T_SIZE)->head = 0; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3234 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3235 if (mm < m->least_addr) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3236 m->least_addr = mm; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3237 if ((m->footprint += mmsize) > m->max_footprint) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3238 m->max_footprint = m->footprint; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3239 assert(is_aligned(chunk2mem(p))); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3240 check_mmapped_chunk(m, p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3241 return chunk2mem(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3242 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3243 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3244 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3245 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3246 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3247 /* Realloc using mmap */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3248 static mchunkptr |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3249 mmap_resize(mstate m, mchunkptr oldp, size_t nb) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3250 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3251 size_t oldsize = chunksize(oldp); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3252 if (is_small(nb)) /* Can't shrink mmap regions below small size */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3253 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3254 /* Keep old chunk if big enough but not too big */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3255 if (oldsize >= nb + SIZE_T_SIZE && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3256 (oldsize - nb) <= (mparams.granularity << 1)) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3257 return oldp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3258 else { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3259 size_t offset = oldp->prev_foot & ~IS_MMAPPED_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3260 size_t oldmmsize = oldsize + offset + MMAP_FOOT_PAD; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3261 size_t newmmsize = granularity_align(nb + SIX_SIZE_T_SIZES + |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3262 CHUNK_ALIGN_MASK); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3263 char *cp = (char *) CALL_MREMAP((char *) oldp - offset, |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3264 oldmmsize, newmmsize, 1); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3265 if (cp != CMFAIL) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3266 mchunkptr newp = (mchunkptr) (cp + offset); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3267 size_t psize = newmmsize - offset - MMAP_FOOT_PAD; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3268 newp->head = (psize | CINUSE_BIT); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3269 mark_inuse_foot(m, newp, psize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3270 chunk_plus_offset(newp, psize)->head = FENCEPOST_HEAD; |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3271 chunk_plus_offset(newp, psize + SIZE_T_SIZE)->head = 0; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3272 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3273 if (cp < m->least_addr) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3274 m->least_addr = cp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3275 if ((m->footprint += newmmsize - oldmmsize) > m->max_footprint) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3276 m->max_footprint = m->footprint; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3277 check_mmapped_chunk(m, newp); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3278 return newp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3279 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3280 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3281 return 0; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3282 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3283 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3284 /* -------------------------- mspace management -------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3285 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3286 /* Initialize top chunk and its size */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3287 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3288 init_top(mstate m, mchunkptr p, size_t psize) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3289 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3290 /* Ensure alignment */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3291 size_t offset = align_offset(chunk2mem(p)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3292 p = (mchunkptr) ((char *) p + offset); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3293 psize -= offset; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3294 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3295 m->top = p; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3296 m->topsize = psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3297 p->head = psize | PINUSE_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3298 /* set size of fake trailing chunk holding overhead space only once */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3299 chunk_plus_offset(p, psize)->head = TOP_FOOT_SIZE; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3300 m->trim_check = mparams.trim_threshold; /* reset on each update */ |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3301 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3302 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3303 /* Initialize bins for a new mstate that is otherwise zeroed out */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3304 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3305 init_bins(mstate m) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3306 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3307 /* Establish circular links for smallbins */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3308 bindex_t i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3309 for (i = 0; i < NSMALLBINS; ++i) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3310 sbinptr bin = smallbin_at(m, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3311 bin->fd = bin->bk = bin; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3312 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3313 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3314 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3315 #if PROCEED_ON_ERROR |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3316 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3317 /* default corruption action */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3318 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3319 reset_on_error(mstate m) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3320 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3321 int i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3322 ++malloc_corruption_error_count; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3323 /* Reinitialize fields to forget about all memory */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3324 m->smallbins = m->treebins = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3325 m->dvsize = m->topsize = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3326 m->seg.base = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3327 m->seg.size = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3328 m->seg.next = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3329 m->top = m->dv = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3330 for (i = 0; i < NTREEBINS; ++i) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3331 *treebin_at(m, i) = 0; |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3332 init_bins(m); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3333 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3334 #endif /* PROCEED_ON_ERROR */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3335 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3336 /* Allocate chunk and prepend remainder with chunk in successor base. */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3337 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3338 prepend_alloc(mstate m, char *newbase, char *oldbase, size_t nb) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3339 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3340 mchunkptr p = align_as_chunk(newbase); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3341 mchunkptr oldfirst = align_as_chunk(oldbase); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3342 size_t psize = (char *) oldfirst - (char *) p; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3343 mchunkptr q = chunk_plus_offset(p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3344 size_t qsize = psize - nb; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3345 set_size_and_pinuse_of_inuse_chunk(m, p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3346 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3347 assert((char *) oldfirst > (char *) q); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3348 assert(pinuse(oldfirst)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3349 assert(qsize >= MIN_CHUNK_SIZE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3350 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3351 /* consolidate remainder with first chunk of old base */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3352 if (oldfirst == m->top) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3353 size_t tsize = m->topsize += qsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3354 m->top = q; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3355 q->head = tsize | PINUSE_BIT; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3356 check_top_chunk(m, q); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3357 } else if (oldfirst == m->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3358 size_t dsize = m->dvsize += qsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3359 m->dv = q; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3360 set_size_and_pinuse_of_free_chunk(q, dsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3361 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3362 if (!cinuse(oldfirst)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3363 size_t nsize = chunksize(oldfirst); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3364 unlink_chunk(m, oldfirst, nsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3365 oldfirst = chunk_plus_offset(oldfirst, nsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3366 qsize += nsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3367 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3368 set_free_with_pinuse(q, qsize, oldfirst); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3369 insert_chunk(m, q, qsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3370 check_free_chunk(m, q); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3371 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3372 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3373 check_malloced_chunk(m, chunk2mem(p), nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3374 return chunk2mem(p); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3375 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3376 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3377 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3378 /* Add a segment to hold a new noncontiguous region */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3379 static void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3380 add_segment(mstate m, char *tbase, size_t tsize, flag_t mmapped) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3381 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3382 /* Determine locations and sizes of segment, fenceposts, old top */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3383 char *old_top = (char *) m->top; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3384 msegmentptr oldsp = segment_holding(m, old_top); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3385 char *old_end = oldsp->base + oldsp->size; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3386 size_t ssize = pad_request(sizeof(struct malloc_segment)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3387 char *rawsp = old_end - (ssize + FOUR_SIZE_T_SIZES + CHUNK_ALIGN_MASK); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3388 size_t offset = align_offset(chunk2mem(rawsp)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3389 char *asp = rawsp + offset; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3390 char *csp = (asp < (old_top + MIN_CHUNK_SIZE)) ? old_top : asp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3391 mchunkptr sp = (mchunkptr) csp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3392 msegmentptr ss = (msegmentptr) (chunk2mem(sp)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3393 mchunkptr tnext = chunk_plus_offset(sp, ssize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3394 mchunkptr p = tnext; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3395 int nfences = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3396 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3397 /* reset top to new space */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3398 init_top(m, (mchunkptr) tbase, tsize - TOP_FOOT_SIZE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3399 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3400 /* Set up segment record */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3401 assert(is_aligned(ss)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3402 set_size_and_pinuse_of_inuse_chunk(m, sp, ssize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3403 *ss = m->seg; /* Push current record */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3404 m->seg.base = tbase; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3405 m->seg.size = tsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3406 m->seg.sflags = mmapped; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3407 m->seg.next = ss; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3408 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3409 /* Insert trailing fenceposts */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3410 for (;;) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3411 mchunkptr nextp = chunk_plus_offset(p, SIZE_T_SIZE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3412 p->head = FENCEPOST_HEAD; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3413 ++nfences; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3414 if ((char *) (&(nextp->head)) < old_end) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3415 p = nextp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3416 else |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3417 break; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3418 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3419 assert(nfences >= 2); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3420 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3421 /* Insert the rest of old top into a bin as an ordinary free chunk */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3422 if (csp != old_top) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3423 mchunkptr q = (mchunkptr) old_top; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3424 size_t psize = csp - old_top; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3425 mchunkptr tn = chunk_plus_offset(q, psize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3426 set_free_with_pinuse(q, psize, tn); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3427 insert_chunk(m, q, psize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3428 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3429 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3430 check_top_chunk(m, m->top); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3431 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3432 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3433 /* -------------------------- System allocation -------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3434 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3435 /* Get memory from system using MORECORE or MMAP */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3436 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3437 sys_alloc(mstate m, size_t nb) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3438 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3439 char *tbase = CMFAIL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3440 size_t tsize = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3441 flag_t mmap_flag = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3442 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3443 init_mparams(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3444 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3445 /* Directly map large chunks */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3446 if (use_mmap(m) && nb >= mparams.mmap_threshold) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3447 void *mem = mmap_alloc(m, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3448 if (mem != 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3449 return mem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3450 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3451 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3452 /* |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3453 Try getting memory in any of three ways (in most-preferred to |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3454 least-preferred order): |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3455 1. A call to MORECORE that can normally contiguously extend memory. |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3456 (disabled if not MORECORE_CONTIGUOUS or not HAVE_MORECORE or |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3457 or main space is mmapped or a previous contiguous call failed) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3458 2. A call to MMAP new space (disabled if not HAVE_MMAP). |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3459 Note that under the default settings, if MORECORE is unable to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3460 fulfill a request, and HAVE_MMAP is true, then mmap is |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3461 used as a noncontiguous system allocator. This is a useful backup |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3462 strategy for systems with holes in address spaces -- in this case |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3463 sbrk cannot contiguously expand the heap, but mmap may be able to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3464 find space. |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3465 3. A call to MORECORE that cannot usually contiguously extend memory. |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3466 (disabled if not HAVE_MORECORE) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3467 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3468 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3469 if (MORECORE_CONTIGUOUS && !use_noncontiguous(m)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3470 char *br = CMFAIL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3471 msegmentptr ss = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3472 (m->top == 0) ? 0 : segment_holding(m, (char *) m->top); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3473 size_t asize = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3474 ACQUIRE_MORECORE_LOCK(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3475 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3476 if (ss == 0) { /* First time through or recovery */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3477 char *base = (char *) CALL_MORECORE(0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3478 if (base != CMFAIL) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3479 asize = granularity_align(nb + TOP_FOOT_SIZE + SIZE_T_ONE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3480 /* Adjust to end on a page boundary */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3481 if (!is_page_aligned(base)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3482 asize += (page_align((size_t) base) - (size_t) base); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3483 /* Can't call MORECORE if size is negative when treated as signed */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3484 if (asize < HALF_MAX_SIZE_T && |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3485 (br = (char *) (CALL_MORECORE(asize))) == base) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3486 tbase = base; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3487 tsize = asize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3488 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3489 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3490 } else { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3491 /* Subtract out existing available top space from MORECORE request. */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3492 asize = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3493 granularity_align(nb - m->topsize + TOP_FOOT_SIZE + |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3494 SIZE_T_ONE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3495 /* Use mem here only if it did continuously extend old space */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3496 if (asize < HALF_MAX_SIZE_T && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3497 (br = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3498 (char *) (CALL_MORECORE(asize))) == ss->base + ss->size) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3499 tbase = br; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3500 tsize = asize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3501 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3502 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3503 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3504 if (tbase == CMFAIL) { /* Cope with partial failure */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3505 if (br != CMFAIL) { /* Try to use/extend the space we did get */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3506 if (asize < HALF_MAX_SIZE_T && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3507 asize < nb + TOP_FOOT_SIZE + SIZE_T_ONE) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3508 size_t esize = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3509 granularity_align(nb + TOP_FOOT_SIZE + |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3510 SIZE_T_ONE - asize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3511 if (esize < HALF_MAX_SIZE_T) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3512 char *end = (char *) CALL_MORECORE(esize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3513 if (end != CMFAIL) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3514 asize += esize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3515 else { /* Can't use; try to release */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3516 end = (char *) CALL_MORECORE(-asize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3517 br = CMFAIL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3518 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3519 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3520 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3521 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3522 if (br != CMFAIL) { /* Use the space we did get */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3523 tbase = br; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3524 tsize = asize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3525 } else |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3526 disable_contiguous(m); /* Don't try contiguous path in the future */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3527 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3528 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3529 RELEASE_MORECORE_LOCK(); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3530 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3531 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3532 if (HAVE_MMAP && tbase == CMFAIL) { /* Try MMAP */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3533 size_t req = nb + TOP_FOOT_SIZE + SIZE_T_ONE; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3534 size_t rsize = granularity_align(req); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3535 if (rsize > nb) { /* Fail if wraps around zero */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3536 char *mp = (char *) (CALL_MMAP(rsize)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3537 if (mp != CMFAIL) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3538 tbase = mp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3539 tsize = rsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3540 mmap_flag = IS_MMAPPED_BIT; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3541 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3542 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3543 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3544 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3545 if (HAVE_MORECORE && tbase == CMFAIL) { /* Try noncontiguous MORECORE */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3546 size_t asize = granularity_align(nb + TOP_FOOT_SIZE + SIZE_T_ONE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3547 if (asize < HALF_MAX_SIZE_T) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3548 char *br = CMFAIL; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3549 char *end = CMFAIL; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3550 ACQUIRE_MORECORE_LOCK(); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3551 br = (char *) (CALL_MORECORE(asize)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3552 end = (char *) (CALL_MORECORE(0)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3553 RELEASE_MORECORE_LOCK(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3554 if (br != CMFAIL && end != CMFAIL && br < end) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3555 size_t ssize = end - br; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3556 if (ssize > nb + TOP_FOOT_SIZE) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3557 tbase = br; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3558 tsize = ssize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3559 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3560 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3561 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3562 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3563 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3564 if (tbase != CMFAIL) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3565 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3566 if ((m->footprint += tsize) > m->max_footprint) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3567 m->max_footprint = m->footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3568 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3569 if (!is_initialized(m)) { /* first-time initialization */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3570 m->seg.base = m->least_addr = tbase; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3571 m->seg.size = tsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3572 m->seg.sflags = mmap_flag; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3573 m->magic = mparams.magic; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3574 init_bins(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3575 if (is_global(m)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3576 init_top(m, (mchunkptr) tbase, tsize - TOP_FOOT_SIZE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3577 else { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3578 /* Offset top by embedded malloc_state */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3579 mchunkptr mn = next_chunk(mem2chunk(m)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3580 init_top(m, mn, |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3581 (size_t) ((tbase + tsize) - (char *) mn) - |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3582 TOP_FOOT_SIZE); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3583 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3584 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3585 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3586 else { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3587 /* Try to merge with an existing segment */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3588 msegmentptr sp = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3589 while (sp != 0 && tbase != sp->base + sp->size) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3590 sp = sp->next; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3591 if (sp != 0 && !is_extern_segment(sp) && (sp->sflags & IS_MMAPPED_BIT) == mmap_flag && segment_holds(sp, m->top)) { /* append */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3592 sp->size += tsize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3593 init_top(m, m->top, m->topsize + tsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3594 } else { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3595 if (tbase < m->least_addr) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3596 m->least_addr = tbase; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3597 sp = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3598 while (sp != 0 && sp->base != tbase + tsize) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3599 sp = sp->next; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3600 if (sp != 0 && |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3601 !is_extern_segment(sp) && |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3602 (sp->sflags & IS_MMAPPED_BIT) == mmap_flag) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3603 char *oldbase = sp->base; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3604 sp->base = tbase; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3605 sp->size += tsize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3606 return prepend_alloc(m, tbase, oldbase, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3607 } else |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3608 add_segment(m, tbase, tsize, mmap_flag); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3609 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3610 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3611 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3612 if (nb < m->topsize) { /* Allocate from new or extended top space */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3613 size_t rsize = m->topsize -= nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3614 mchunkptr p = m->top; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3615 mchunkptr r = m->top = chunk_plus_offset(p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3616 r->head = rsize | PINUSE_BIT; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3617 set_size_and_pinuse_of_inuse_chunk(m, p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3618 check_top_chunk(m, m->top); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3619 check_malloced_chunk(m, chunk2mem(p), nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3620 return chunk2mem(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3621 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3622 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3623 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3624 MALLOC_FAILURE_ACTION; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3625 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3626 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3627 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3628 /* ----------------------- system deallocation -------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3629 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3630 /* Unmap and unlink any mmapped segments that don't contain used chunks */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3631 static size_t |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3632 release_unused_segments(mstate m) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3633 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3634 size_t released = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3635 msegmentptr pred = &m->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3636 msegmentptr sp = pred->next; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3637 while (sp != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3638 char *base = sp->base; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3639 size_t size = sp->size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3640 msegmentptr next = sp->next; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3641 if (is_mmapped_segment(sp) && !is_extern_segment(sp)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3642 mchunkptr p = align_as_chunk(base); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3643 size_t psize = chunksize(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3644 /* Can unmap if first chunk holds entire segment and not pinned */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3645 if (!cinuse(p) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3646 && (char *) p + psize >= base + size - TOP_FOOT_SIZE) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3647 tchunkptr tp = (tchunkptr) p; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3648 assert(segment_holds(sp, (char *) sp)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3649 if (p == m->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3650 m->dv = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3651 m->dvsize = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3652 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3653 unlink_large_chunk(m, tp); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3654 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3655 if (CALL_MUNMAP(base, size) == 0) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3656 released += size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3657 m->footprint -= size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3658 /* unlink obsoleted record */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3659 sp = pred; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3660 sp->next = next; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3661 } else { /* back out if cannot unmap */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3662 insert_large_chunk(m, tp, psize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3663 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3664 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3665 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3666 pred = sp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3667 sp = next; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3668 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3669 return released; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3670 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3671 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3672 static int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3673 sys_trim(mstate m, size_t pad) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3674 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3675 size_t released = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3676 if (pad < MAX_REQUEST && is_initialized(m)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3677 pad += TOP_FOOT_SIZE; /* ensure enough room for segment overhead */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3678 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3679 if (m->topsize > pad) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3680 /* Shrink top space in granularity-size units, keeping at least one */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3681 size_t unit = mparams.granularity; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3682 size_t extra = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3683 ((m->topsize - pad + (unit - SIZE_T_ONE)) / unit - |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3684 SIZE_T_ONE) * unit; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3685 msegmentptr sp = segment_holding(m, (char *) m->top); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3686 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3687 if (!is_extern_segment(sp)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3688 if (is_mmapped_segment(sp)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3689 if (HAVE_MMAP && sp->size >= extra && !has_segment_link(m, sp)) { /* can't shrink if pinned */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3690 size_t newsize = sp->size - extra; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3691 /* Prefer mremap, fall back to munmap */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3692 if ((CALL_MREMAP |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3693 (sp->base, sp->size, newsize, 0) != MFAIL) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3694 || (CALL_MUNMAP(sp->base + newsize, extra) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3695 == 0)) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3696 released = extra; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3697 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3698 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3699 } else if (HAVE_MORECORE) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3700 if (extra >= HALF_MAX_SIZE_T) /* Avoid wrapping negative */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3701 extra = (HALF_MAX_SIZE_T) + SIZE_T_ONE - unit; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3702 ACQUIRE_MORECORE_LOCK(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3703 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3704 /* Make sure end of memory is where we last set it. */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3705 char *old_br = (char *) (CALL_MORECORE(0)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3706 if (old_br == sp->base + sp->size) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3707 char *rel_br = (char *) (CALL_MORECORE(-extra)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3708 char *new_br = (char *) (CALL_MORECORE(0)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3709 if (rel_br != CMFAIL && new_br < old_br) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3710 released = old_br - new_br; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3711 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3712 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3713 RELEASE_MORECORE_LOCK(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3714 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3715 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3716 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3717 if (released != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3718 sp->size -= released; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3719 m->footprint -= released; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3720 init_top(m, m->top, m->topsize - released); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3721 check_top_chunk(m, m->top); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3722 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3723 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3724 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3725 /* Unmap any unused mmapped segments */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3726 if (HAVE_MMAP) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3727 released += release_unused_segments(m); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3728 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3729 /* On failure, disable autotrim to avoid repeated failed future calls */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3730 if (released == 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3731 m->trim_check = MAX_SIZE_T; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3732 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3733 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3734 return (released != 0) ? 1 : 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3735 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3736 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3737 /* ---------------------------- malloc support --------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3738 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3739 /* allocate a large request from the best fitting chunk in a treebin */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3740 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3741 tmalloc_large(mstate m, size_t nb) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3742 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3743 tchunkptr v = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3744 size_t rsize = -nb; /* Unsigned negation */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3745 tchunkptr t; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3746 bindex_t idx; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3747 compute_tree_index(nb, idx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3748 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3749 if ((t = *treebin_at(m, idx)) != 0) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3750 /* Traverse tree for this bin looking for node with size == nb */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3751 size_t sizebits = nb << leftshift_for_tree_index(idx); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3752 tchunkptr rst = 0; /* The deepest untaken right subtree */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3753 for (;;) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3754 tchunkptr rt; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3755 size_t trem = chunksize(t) - nb; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3756 if (trem < rsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3757 v = t; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3758 if ((rsize = trem) == 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3759 break; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3760 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3761 rt = t->child[1]; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3762 t = t->child[(sizebits >> (SIZE_T_BITSIZE - SIZE_T_ONE)) & 1]; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3763 if (rt != 0 && rt != t) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3764 rst = rt; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3765 if (t == 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3766 t = rst; /* set t to least subtree holding sizes > nb */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3767 break; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3768 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3769 sizebits <<= 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3770 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3771 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3772 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3773 if (t == 0 && v == 0) { /* set t to root of next non-empty treebin */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3774 binmap_t leftbits = left_bits(idx2bit(idx)) & m->treemap; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3775 if (leftbits != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3776 bindex_t i; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3777 binmap_t leastbit = least_bit(leftbits); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3778 compute_bit2idx(leastbit, i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3779 t = *treebin_at(m, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3780 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3781 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3782 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3783 while (t != 0) { /* find smallest of tree or subtree */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3784 size_t trem = chunksize(t) - nb; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3785 if (trem < rsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3786 rsize = trem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3787 v = t; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3788 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3789 t = leftmost_child(t); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3790 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3791 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3792 /* If dv is a better fit, return 0 so malloc will use it */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3793 if (v != 0 && rsize < (size_t) (m->dvsize - nb)) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3794 if (RTCHECK(ok_address(m, v))) { /* split */ |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3795 mchunkptr r = chunk_plus_offset(v, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3796 assert(chunksize(v) == rsize + nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3797 if (RTCHECK(ok_next(v, r))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3798 unlink_large_chunk(m, v); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3799 if (rsize < MIN_CHUNK_SIZE) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3800 set_inuse_and_pinuse(m, v, (rsize + nb)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3801 else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3802 set_size_and_pinuse_of_inuse_chunk(m, v, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3803 set_size_and_pinuse_of_free_chunk(r, rsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3804 insert_chunk(m, r, rsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3805 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3806 return chunk2mem(v); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3807 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3808 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3809 CORRUPTION_ERROR_ACTION(m); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3810 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3811 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3812 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3813 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3814 /* allocate a small request from the best fitting chunk in a treebin */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3815 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3816 tmalloc_small(mstate m, size_t nb) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3817 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3818 tchunkptr t, v; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3819 size_t rsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3820 bindex_t i; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3821 binmap_t leastbit = least_bit(m->treemap); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3822 compute_bit2idx(leastbit, i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3823 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3824 v = t = *treebin_at(m, i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3825 rsize = chunksize(t) - nb; |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3826 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3827 while ((t = leftmost_child(t)) != 0) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3828 size_t trem = chunksize(t) - nb; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3829 if (trem < rsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3830 rsize = trem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3831 v = t; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3832 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3833 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3834 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3835 if (RTCHECK(ok_address(m, v))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3836 mchunkptr r = chunk_plus_offset(v, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3837 assert(chunksize(v) == rsize + nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3838 if (RTCHECK(ok_next(v, r))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3839 unlink_large_chunk(m, v); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3840 if (rsize < MIN_CHUNK_SIZE) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3841 set_inuse_and_pinuse(m, v, (rsize + nb)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3842 else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3843 set_size_and_pinuse_of_inuse_chunk(m, v, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3844 set_size_and_pinuse_of_free_chunk(r, rsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3845 replace_dv(m, r, rsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3846 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3847 return chunk2mem(v); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3848 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3849 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3850 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3851 CORRUPTION_ERROR_ACTION(m); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3852 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3853 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3854 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3855 /* --------------------------- realloc support --------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3856 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3857 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3858 internal_realloc(mstate m, void *oldmem, size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3859 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3860 if (bytes >= MAX_REQUEST) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3861 MALLOC_FAILURE_ACTION; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3862 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3863 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3864 if (!PREACTION(m)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3865 mchunkptr oldp = mem2chunk(oldmem); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3866 size_t oldsize = chunksize(oldp); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3867 mchunkptr next = chunk_plus_offset(oldp, oldsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3868 mchunkptr newp = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3869 void *extra = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3870 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3871 /* Try to either shrink or extend into top. Else malloc-copy-free */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3872 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3873 if (RTCHECK(ok_address(m, oldp) && ok_cinuse(oldp) && |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3874 ok_next(oldp, next) && ok_pinuse(next))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3875 size_t nb = request2size(bytes); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3876 if (is_mmapped(oldp)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3877 newp = mmap_resize(m, oldp, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3878 else if (oldsize >= nb) { /* already big enough */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3879 size_t rsize = oldsize - nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3880 newp = oldp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3881 if (rsize >= MIN_CHUNK_SIZE) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3882 mchunkptr remainder = chunk_plus_offset(newp, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3883 set_inuse(m, newp, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3884 set_inuse(m, remainder, rsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3885 extra = chunk2mem(remainder); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3886 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3887 } else if (next == m->top && oldsize + m->topsize > nb) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3888 /* Expand into top */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3889 size_t newsize = oldsize + m->topsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3890 size_t newtopsize = newsize - nb; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3891 mchunkptr newtop = chunk_plus_offset(oldp, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3892 set_inuse(m, oldp, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3893 newtop->head = newtopsize | PINUSE_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3894 m->top = newtop; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3895 m->topsize = newtopsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3896 newp = oldp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3897 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3898 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3899 USAGE_ERROR_ACTION(m, oldmem); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3900 POSTACTION(m); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3901 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3902 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3903 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3904 POSTACTION(m); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3905 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3906 if (newp != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3907 if (extra != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3908 internal_free(m, extra); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3909 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3910 check_inuse_chunk(m, newp); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3911 return chunk2mem(newp); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3912 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3913 void *newmem = internal_malloc(m, bytes); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3914 if (newmem != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3915 size_t oc = oldsize - overhead_for(oldp); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3916 memcpy(newmem, oldmem, (oc < bytes) ? oc : bytes); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3917 internal_free(m, oldmem); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3918 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3919 return newmem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3920 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3921 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3922 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3923 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3924 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3925 /* --------------------------- memalign support -------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3926 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3927 static void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3928 internal_memalign(mstate m, size_t alignment, size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3929 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3930 if (alignment <= MALLOC_ALIGNMENT) /* Can just use malloc */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3931 return internal_malloc(m, bytes); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3932 if (alignment < MIN_CHUNK_SIZE) /* must be at least a minimum chunk size */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3933 alignment = MIN_CHUNK_SIZE; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3934 if ((alignment & (alignment - SIZE_T_ONE)) != 0) { /* Ensure a power of 2 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3935 size_t a = MALLOC_ALIGNMENT << 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3936 while (a < alignment) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3937 a <<= 1; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3938 alignment = a; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3939 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3940 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3941 if (bytes >= MAX_REQUEST - alignment) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3942 if (m != 0) { /* Test isn't needed but avoids compiler warning */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3943 MALLOC_FAILURE_ACTION; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3944 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3945 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3946 size_t nb = request2size(bytes); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3947 size_t req = nb + alignment + MIN_CHUNK_SIZE - CHUNK_OVERHEAD; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3948 char *mem = (char *) internal_malloc(m, req); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3949 if (mem != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3950 void *leader = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3951 void *trailer = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3952 mchunkptr p = mem2chunk(mem); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3953 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3954 if (PREACTION(m)) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3955 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3956 if ((((size_t) (mem)) % alignment) != 0) { /* misaligned */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3957 /* |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3958 Find an aligned spot inside chunk. Since we need to give |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3959 back leading space in a chunk of at least MIN_CHUNK_SIZE, if |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3960 the first calculation places us at a spot with less than |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3961 MIN_CHUNK_SIZE leader, we can move to the next aligned spot. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3962 We've allocated enough total room so that this is always |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3963 possible. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3964 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3965 char *br = (char *) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3966 mem2chunk((size_t) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3967 (((size_t) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3968 (mem + alignment - |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3969 SIZE_T_ONE)) & -alignment)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3970 char *pos = |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3971 ((size_t) (br - (char *) (p)) >= |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3972 MIN_CHUNK_SIZE) ? br : br + alignment; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3973 mchunkptr newp = (mchunkptr) pos; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3974 size_t leadsize = pos - (char *) (p); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3975 size_t newsize = chunksize(p) - leadsize; |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3976 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3977 if (is_mmapped(p)) { /* For mmapped chunks, just adjust offset */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3978 newp->prev_foot = p->prev_foot + leadsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3979 newp->head = (newsize | CINUSE_BIT); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3980 } else { /* Otherwise, give back leader, use the rest */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3981 set_inuse(m, newp, newsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3982 set_inuse(m, p, leadsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3983 leader = chunk2mem(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3984 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3985 p = newp; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3986 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3987 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3988 /* Give back spare room at the end */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3989 if (!is_mmapped(p)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3990 size_t size = chunksize(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3991 if (size > nb + MIN_CHUNK_SIZE) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3992 size_t remainder_size = size - nb; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3993 mchunkptr remainder = chunk_plus_offset(p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3994 set_inuse(m, p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3995 set_inuse(m, remainder, remainder_size); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
3996 trailer = chunk2mem(remainder); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3997 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3998 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
3999 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4000 assert(chunksize(p) >= nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4001 assert((((size_t) (chunk2mem(p))) % alignment) == 0); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4002 check_inuse_chunk(m, p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4003 POSTACTION(m); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4004 if (leader != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4005 internal_free(m, leader); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4006 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4007 if (trailer != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4008 internal_free(m, trailer); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4009 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4010 return chunk2mem(p); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4011 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4012 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4013 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4014 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4015 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4016 /* ------------------------ comalloc/coalloc support --------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4017 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4018 static void ** |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4019 ialloc(mstate m, size_t n_elements, size_t * sizes, int opts, void *chunks[]) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4020 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4021 /* |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4022 This provides common support for independent_X routines, handling |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4023 all of the combinations that can result. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4024 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4025 The opts arg has: |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4026 bit 0 set if all elements are same size (using sizes[0]) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4027 bit 1 set if elements should be zeroed |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4028 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4029 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4030 size_t element_size; /* chunksize of each element, if all same */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4031 size_t contents_size; /* total size of elements */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4032 size_t array_size; /* request size of pointer array */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4033 void *mem; /* malloced aggregate space */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4034 mchunkptr p; /* corresponding chunk */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4035 size_t remainder_size; /* remaining bytes while splitting */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4036 void **marray; /* either "chunks" or malloced ptr array */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4037 mchunkptr array_chunk; /* chunk for malloced ptr array */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4038 flag_t was_enabled; /* to disable mmap */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4039 size_t size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4040 size_t i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4041 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4042 /* compute array length, if needed */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4043 if (chunks != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4044 if (n_elements == 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4045 return chunks; /* nothing to do */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4046 marray = chunks; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4047 array_size = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4048 } else { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4049 /* if empty req, must still return chunk representing empty array */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4050 if (n_elements == 0) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4051 return (void **) internal_malloc(m, 0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4052 marray = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4053 array_size = request2size(n_elements * (sizeof(void *))); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4054 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4055 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4056 /* compute total element size */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4057 if (opts & 0x1) { /* all-same-size */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4058 element_size = request2size(*sizes); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4059 contents_size = n_elements * element_size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4060 } else { /* add up all the sizes */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4061 element_size = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4062 contents_size = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4063 for (i = 0; i != n_elements; ++i) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4064 contents_size += request2size(sizes[i]); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4065 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4066 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4067 size = contents_size + array_size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4068 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4069 /* |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4070 Allocate the aggregate chunk. First disable direct-mmapping so |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4071 malloc won't use it, since we would not be able to later |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4072 free/realloc space internal to a segregated mmap region. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4073 */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4074 was_enabled = use_mmap(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4075 disable_mmap(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4076 mem = internal_malloc(m, size - CHUNK_OVERHEAD); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4077 if (was_enabled) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4078 enable_mmap(m); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4079 if (mem == 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4080 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4081 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4082 if (PREACTION(m)) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4083 return 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4084 p = mem2chunk(mem); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4085 remainder_size = chunksize(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4086 |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4087 assert(!is_mmapped(p)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4088 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4089 if (opts & 0x2) { /* optionally clear the elements */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4090 memset((size_t *) mem, 0, remainder_size - SIZE_T_SIZE - array_size); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4091 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4092 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4093 /* If not provided, allocate the pointer array as final part of chunk */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4094 if (marray == 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4095 size_t array_chunk_size; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4096 array_chunk = chunk_plus_offset(p, contents_size); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4097 array_chunk_size = remainder_size - contents_size; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4098 marray = (void **) (chunk2mem(array_chunk)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4099 set_size_and_pinuse_of_inuse_chunk(m, array_chunk, array_chunk_size); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4100 remainder_size = contents_size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4101 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4102 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4103 /* split out elements */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4104 for (i = 0;; ++i) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4105 marray[i] = chunk2mem(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4106 if (i != n_elements - 1) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4107 if (element_size != 0) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4108 size = element_size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4109 else |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4110 size = request2size(sizes[i]); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4111 remainder_size -= size; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4112 set_size_and_pinuse_of_inuse_chunk(m, p, size); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4113 p = chunk_plus_offset(p, size); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4114 } else { /* the final element absorbs any overallocation slop */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4115 set_size_and_pinuse_of_inuse_chunk(m, p, remainder_size); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4116 break; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4117 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4118 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4119 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4120 #if DEBUG |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4121 if (marray != chunks) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4122 /* final element must have exactly exhausted chunk */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4123 if (element_size != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4124 assert(remainder_size == element_size); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4125 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4126 assert(remainder_size == request2size(sizes[i])); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4127 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4128 check_inuse_chunk(m, mem2chunk(marray)); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4129 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4130 for (i = 0; i != n_elements; ++i) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4131 check_inuse_chunk(m, mem2chunk(marray[i])); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4132 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4133 #endif /* DEBUG */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4134 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4135 POSTACTION(m); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4136 return marray; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4137 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4138 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4139 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4140 /* -------------------------- public routines ---------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4141 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4142 #if !ONLY_MSPACES |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4143 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4144 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4145 dlmalloc(size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4146 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4147 /* |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4148 Basic algorithm: |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4149 If a small request (< 256 bytes minus per-chunk overhead): |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4150 1. If one exists, use a remainderless chunk in associated smallbin. |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4151 (Remainderless means that there are too few excess bytes to |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4152 represent as a chunk.) |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4153 2. If it is big enough, use the dv chunk, which is normally the |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4154 chunk adjacent to the one used for the most recent small request. |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4155 3. If one exists, split the smallest available chunk in a bin, |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4156 saving remainder in dv. |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4157 4. If it is big enough, use the top chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4158 5. If available, get memory from system and use it |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4159 Otherwise, for a large request: |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4160 1. Find the smallest available binned chunk that fits, and use it |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4161 if it is better fitting than dv chunk, splitting if necessary. |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4162 2. If better fitting than any binned chunk, use the dv chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4163 3. If it is big enough, use the top chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4164 4. If request size >= mmap threshold, try to directly mmap this chunk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4165 5. If available, get memory from system and use it |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4166 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4167 The ugly goto's here ensure that postaction occurs along all paths. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4168 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4169 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4170 if (!PREACTION(gm)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4171 void *mem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4172 size_t nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4173 if (bytes <= MAX_SMALL_REQUEST) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4174 bindex_t idx; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4175 binmap_t smallbits; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4176 nb = (bytes < MIN_REQUEST) ? MIN_CHUNK_SIZE : pad_request(bytes); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4177 idx = small_index(nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4178 smallbits = gm->smallmap >> idx; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4179 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4180 if ((smallbits & 0x3U) != 0) { /* Remainderless fit to a smallbin. */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4181 mchunkptr b, p; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4182 idx += ~smallbits & 1; /* Uses next bin if idx empty */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4183 b = smallbin_at(gm, idx); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4184 p = b->fd; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4185 assert(chunksize(p) == small_index2size(idx)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4186 unlink_first_small_chunk(gm, b, p, idx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4187 set_inuse_and_pinuse(gm, p, small_index2size(idx)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4188 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4189 check_malloced_chunk(gm, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4190 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4191 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4192 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4193 else if (nb > gm->dvsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4194 if (smallbits != 0) { /* Use chunk in next nonempty smallbin */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4195 mchunkptr b, p, r; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4196 size_t rsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4197 bindex_t i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4198 binmap_t leftbits = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4199 (smallbits << idx) & left_bits(idx2bit(idx)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4200 binmap_t leastbit = least_bit(leftbits); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4201 compute_bit2idx(leastbit, i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4202 b = smallbin_at(gm, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4203 p = b->fd; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4204 assert(chunksize(p) == small_index2size(i)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4205 unlink_first_small_chunk(gm, b, p, i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4206 rsize = small_index2size(i) - nb; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4207 /* Fit here cannot be remainderless if 4byte sizes */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4208 if (SIZE_T_SIZE != 4 && rsize < MIN_CHUNK_SIZE) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4209 set_inuse_and_pinuse(gm, p, small_index2size(i)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4210 else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4211 set_size_and_pinuse_of_inuse_chunk(gm, p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4212 r = chunk_plus_offset(p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4213 set_size_and_pinuse_of_free_chunk(r, rsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4214 replace_dv(gm, r, rsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4215 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4216 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4217 check_malloced_chunk(gm, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4218 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4219 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4220 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4221 else if (gm->treemap != 0 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4222 && (mem = tmalloc_small(gm, nb)) != 0) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4223 check_malloced_chunk(gm, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4224 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4225 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4226 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4227 } else if (bytes >= MAX_REQUEST) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4228 nb = MAX_SIZE_T; /* Too big to allocate. Force failure (in sys alloc) */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4229 else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4230 nb = pad_request(bytes); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4231 if (gm->treemap != 0 && (mem = tmalloc_large(gm, nb)) != 0) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4232 check_malloced_chunk(gm, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4233 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4234 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4235 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4236 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4237 if (nb <= gm->dvsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4238 size_t rsize = gm->dvsize - nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4239 mchunkptr p = gm->dv; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4240 if (rsize >= MIN_CHUNK_SIZE) { /* split dv */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4241 mchunkptr r = gm->dv = chunk_plus_offset(p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4242 gm->dvsize = rsize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4243 set_size_and_pinuse_of_free_chunk(r, rsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4244 set_size_and_pinuse_of_inuse_chunk(gm, p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4245 } else { /* exhaust dv */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4246 size_t dvs = gm->dvsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4247 gm->dvsize = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4248 gm->dv = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4249 set_inuse_and_pinuse(gm, p, dvs); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4250 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4251 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4252 check_malloced_chunk(gm, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4253 goto postaction; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4254 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4255 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4256 else if (nb < gm->topsize) { /* Split top */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4257 size_t rsize = gm->topsize -= nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4258 mchunkptr p = gm->top; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4259 mchunkptr r = gm->top = chunk_plus_offset(p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4260 r->head = rsize | PINUSE_BIT; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4261 set_size_and_pinuse_of_inuse_chunk(gm, p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4262 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4263 check_top_chunk(gm, gm->top); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4264 check_malloced_chunk(gm, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4265 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4266 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4267 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4268 mem = sys_alloc(gm, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4269 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4270 postaction: |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4271 POSTACTION(gm); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4272 return mem; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4273 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4274 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4275 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4276 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4277 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4278 void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4279 dlfree(void *mem) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4280 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4281 /* |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4282 Consolidate freed chunks with preceeding or succeeding bordering |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4283 free chunks, if they exist, and then place in a bin. Intermixed |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4284 with special cases for top, dv, mmapped chunks, and usage errors. |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4285 */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4286 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4287 if (mem != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4288 mchunkptr p = mem2chunk(mem); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4289 #if FOOTERS |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4290 mstate fm = get_mstate_for(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4291 if (!ok_magic(fm)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4292 USAGE_ERROR_ACTION(fm, p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4293 return; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4294 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4295 #else /* FOOTERS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4296 #define fm gm |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4297 #endif /* FOOTERS */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4298 if (!PREACTION(fm)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4299 check_inuse_chunk(fm, p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4300 if (RTCHECK(ok_address(fm, p) && ok_cinuse(p))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4301 size_t psize = chunksize(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4302 mchunkptr next = chunk_plus_offset(p, psize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4303 if (!pinuse(p)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4304 size_t prevsize = p->prev_foot; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4305 if ((prevsize & IS_MMAPPED_BIT) != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4306 prevsize &= ~IS_MMAPPED_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4307 psize += prevsize + MMAP_FOOT_PAD; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4308 if (CALL_MUNMAP((char *) p - prevsize, psize) == 0) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4309 fm->footprint -= psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4310 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4311 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4312 mchunkptr prev = chunk_minus_offset(p, prevsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4313 psize += prevsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4314 p = prev; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4315 if (RTCHECK(ok_address(fm, prev))) { /* consolidate backward */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4316 if (p != fm->dv) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4317 unlink_chunk(fm, p, prevsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4318 } else if ((next->head & INUSE_BITS) == |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4319 INUSE_BITS) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4320 fm->dvsize = psize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4321 set_free_with_pinuse(p, psize, next); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4322 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4323 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4324 } else |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4325 goto erroraction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4326 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4327 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4328 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4329 if (RTCHECK(ok_next(p, next) && ok_pinuse(next))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4330 if (!cinuse(next)) { /* consolidate forward */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4331 if (next == fm->top) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4332 size_t tsize = fm->topsize += psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4333 fm->top = p; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4334 p->head = tsize | PINUSE_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4335 if (p == fm->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4336 fm->dv = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4337 fm->dvsize = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4338 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4339 if (should_trim(fm, tsize)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4340 sys_trim(fm, 0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4341 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4342 } else if (next == fm->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4343 size_t dsize = fm->dvsize += psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4344 fm->dv = p; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4345 set_size_and_pinuse_of_free_chunk(p, dsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4346 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4347 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4348 size_t nsize = chunksize(next); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4349 psize += nsize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4350 unlink_chunk(fm, next, nsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4351 set_size_and_pinuse_of_free_chunk(p, psize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4352 if (p == fm->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4353 fm->dvsize = psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4354 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4355 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4356 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4357 } else |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4358 set_free_with_pinuse(p, psize, next); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4359 insert_chunk(fm, p, psize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4360 check_free_chunk(fm, p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4361 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4362 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4363 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4364 erroraction: |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4365 USAGE_ERROR_ACTION(fm, p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4366 postaction: |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4367 POSTACTION(fm); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4368 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4369 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4370 #if !FOOTERS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4371 #undef fm |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4372 #endif /* FOOTERS */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4373 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4374 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4375 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4376 dlcalloc(size_t n_elements, size_t elem_size) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4377 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4378 void *mem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4379 size_t req = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4380 if (n_elements != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4381 req = n_elements * elem_size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4382 if (((n_elements | elem_size) & ~(size_t) 0xffff) && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4383 (req / n_elements != elem_size)) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4384 req = MAX_SIZE_T; /* force downstream failure on overflow */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4385 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4386 mem = dlmalloc(req); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4387 if (mem != 0 && calloc_must_clear(mem2chunk(mem))) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4388 memset(mem, 0, req); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4389 return mem; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4390 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4391 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4392 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4393 dlrealloc(void *oldmem, size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4394 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4395 if (oldmem == 0) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4396 return dlmalloc(bytes); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4397 #ifdef REALLOC_ZERO_BYTES_FREES |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4398 if (bytes == 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4399 dlfree(oldmem); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4400 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4401 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4402 #endif /* REALLOC_ZERO_BYTES_FREES */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4403 else { |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4404 #if ! FOOTERS |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4405 mstate m = gm; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4406 #else /* FOOTERS */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4407 mstate m = get_mstate_for(mem2chunk(oldmem)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4408 if (!ok_magic(m)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4409 USAGE_ERROR_ACTION(m, oldmem); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4410 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4411 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4412 #endif /* FOOTERS */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4413 return internal_realloc(m, oldmem, bytes); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4414 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4415 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4416 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4417 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4418 dlmemalign(size_t alignment, size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4419 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4420 return internal_memalign(gm, alignment, bytes); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4421 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4422 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4423 void ** |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4424 dlindependent_calloc(size_t n_elements, size_t elem_size, void *chunks[]) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4425 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4426 size_t sz = elem_size; /* serves as 1-element array */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4427 return ialloc(gm, n_elements, &sz, 3, chunks); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4428 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4429 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4430 void ** |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4431 dlindependent_comalloc(size_t n_elements, size_t sizes[], void *chunks[]) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4432 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4433 return ialloc(gm, n_elements, sizes, 0, chunks); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4434 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4435 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4436 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4437 dlvalloc(size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4438 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4439 size_t pagesz; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4440 init_mparams(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4441 pagesz = mparams.page_size; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4442 return dlmemalign(pagesz, bytes); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4443 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4444 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4445 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4446 dlpvalloc(size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4447 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4448 size_t pagesz; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4449 init_mparams(); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4450 pagesz = mparams.page_size; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4451 return dlmemalign(pagesz, |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4452 (bytes + pagesz - SIZE_T_ONE) & ~(pagesz - SIZE_T_ONE)); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4453 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4454 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4455 int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4456 dlmalloc_trim(size_t pad) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4457 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4458 int result = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4459 if (!PREACTION(gm)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4460 result = sys_trim(gm, pad); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4461 POSTACTION(gm); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4462 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4463 return result; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4464 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4465 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4466 size_t |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4467 dlmalloc_footprint(void) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4468 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4469 return gm->footprint; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4470 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4471 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4472 size_t |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4473 dlmalloc_max_footprint(void) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4474 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4475 return gm->max_footprint; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4476 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4477 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4478 #if !NO_MALLINFO |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4479 struct mallinfo |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4480 dlmallinfo(void) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4481 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4482 return internal_mallinfo(gm); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4483 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4484 #endif /* NO_MALLINFO */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4485 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4486 void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4487 dlmalloc_stats() |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4488 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4489 internal_malloc_stats(gm); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4490 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4491 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4492 size_t |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4493 dlmalloc_usable_size(void *mem) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4494 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4495 if (mem != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4496 mchunkptr p = mem2chunk(mem); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4497 if (cinuse(p)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4498 return chunksize(p) - overhead_for(p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4499 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4500 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4501 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4502 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4503 int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4504 dlmallopt(int param_number, int value) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4505 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4506 return change_mparam(param_number, value); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4507 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4508 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4509 #endif /* !ONLY_MSPACES */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4510 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4511 /* ----------------------------- user mspaces ---------------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4512 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4513 #if MSPACES |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4514 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4515 static mstate |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4516 init_user_mstate(char *tbase, size_t tsize) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4517 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4518 size_t msize = pad_request(sizeof(struct malloc_state)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4519 mchunkptr mn; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4520 mchunkptr msp = align_as_chunk(tbase); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4521 mstate m = (mstate) (chunk2mem(msp)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4522 memset(m, 0, msize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4523 INITIAL_LOCK(&m->mutex); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4524 msp->head = (msize | PINUSE_BIT | CINUSE_BIT); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4525 m->seg.base = m->least_addr = tbase; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4526 m->seg.size = m->footprint = m->max_footprint = tsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4527 m->magic = mparams.magic; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4528 m->mflags = mparams.default_mflags; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4529 disable_contiguous(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4530 init_bins(m); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4531 mn = next_chunk(mem2chunk(m)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4532 init_top(m, mn, (size_t) ((tbase + tsize) - (char *) mn) - TOP_FOOT_SIZE); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4533 check_top_chunk(m, m->top); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4534 return m; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4535 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4536 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4537 mspace |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4538 create_mspace(size_t capacity, int locked) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4539 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4540 mstate m = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4541 size_t msize = pad_request(sizeof(struct malloc_state)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4542 init_mparams(); /* Ensure pagesize etc initialized */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4543 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4544 if (capacity < (size_t) - (msize + TOP_FOOT_SIZE + mparams.page_size)) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4545 size_t rs = ((capacity == 0) ? mparams.granularity : |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4546 (capacity + TOP_FOOT_SIZE + msize)); |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4547 size_t tsize = granularity_align(rs); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4548 char *tbase = (char *) (CALL_MMAP(tsize)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4549 if (tbase != CMFAIL) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4550 m = init_user_mstate(tbase, tsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4551 m->seg.sflags = IS_MMAPPED_BIT; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4552 set_lock(m, locked); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4553 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4554 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4555 return (mspace) m; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4556 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4557 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4558 mspace |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4559 create_mspace_with_base(void *base, size_t capacity, int locked) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4560 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4561 mstate m = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4562 size_t msize = pad_request(sizeof(struct malloc_state)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4563 init_mparams(); /* Ensure pagesize etc initialized */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4564 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4565 if (capacity > msize + TOP_FOOT_SIZE && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4566 capacity < (size_t) - (msize + TOP_FOOT_SIZE + mparams.page_size)) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4567 m = init_user_mstate((char *) base, capacity); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4568 m->seg.sflags = EXTERN_BIT; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4569 set_lock(m, locked); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4570 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4571 return (mspace) m; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4572 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4573 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4574 size_t |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4575 destroy_mspace(mspace msp) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4576 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4577 size_t freed = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4578 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4579 if (ok_magic(ms)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4580 msegmentptr sp = &ms->seg; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4581 while (sp != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4582 char *base = sp->base; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4583 size_t size = sp->size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4584 flag_t flag = sp->sflags; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4585 sp = sp->next; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4586 if ((flag & IS_MMAPPED_BIT) && !(flag & EXTERN_BIT) && |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4587 CALL_MUNMAP(base, size) == 0) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4588 freed += size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4589 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4590 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4591 USAGE_ERROR_ACTION(ms, ms); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4592 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4593 return freed; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4594 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4595 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4596 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4597 mspace versions of routines are near-clones of the global |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4598 versions. This is not so nice but better than the alternatives. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4599 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4600 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4601 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4602 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4603 mspace_malloc(mspace msp, size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4604 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4605 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4606 if (!ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4607 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4608 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4609 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4610 if (!PREACTION(ms)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4611 void *mem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4612 size_t nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4613 if (bytes <= MAX_SMALL_REQUEST) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4614 bindex_t idx; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4615 binmap_t smallbits; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4616 nb = (bytes < MIN_REQUEST) ? MIN_CHUNK_SIZE : pad_request(bytes); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4617 idx = small_index(nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4618 smallbits = ms->smallmap >> idx; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4619 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4620 if ((smallbits & 0x3U) != 0) { /* Remainderless fit to a smallbin. */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4621 mchunkptr b, p; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4622 idx += ~smallbits & 1; /* Uses next bin if idx empty */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4623 b = smallbin_at(ms, idx); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4624 p = b->fd; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4625 assert(chunksize(p) == small_index2size(idx)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4626 unlink_first_small_chunk(ms, b, p, idx); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4627 set_inuse_and_pinuse(ms, p, small_index2size(idx)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4628 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4629 check_malloced_chunk(ms, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4630 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4631 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4632 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4633 else if (nb > ms->dvsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4634 if (smallbits != 0) { /* Use chunk in next nonempty smallbin */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4635 mchunkptr b, p, r; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4636 size_t rsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4637 bindex_t i; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4638 binmap_t leftbits = |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4639 (smallbits << idx) & left_bits(idx2bit(idx)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4640 binmap_t leastbit = least_bit(leftbits); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4641 compute_bit2idx(leastbit, i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4642 b = smallbin_at(ms, i); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4643 p = b->fd; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4644 assert(chunksize(p) == small_index2size(i)); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4645 unlink_first_small_chunk(ms, b, p, i); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4646 rsize = small_index2size(i) - nb; |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4647 /* Fit here cannot be remainderless if 4byte sizes */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4648 if (SIZE_T_SIZE != 4 && rsize < MIN_CHUNK_SIZE) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4649 set_inuse_and_pinuse(ms, p, small_index2size(i)); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4650 else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4651 set_size_and_pinuse_of_inuse_chunk(ms, p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4652 r = chunk_plus_offset(p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4653 set_size_and_pinuse_of_free_chunk(r, rsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4654 replace_dv(ms, r, rsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4655 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4656 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4657 check_malloced_chunk(ms, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4658 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4659 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4660 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4661 else if (ms->treemap != 0 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4662 && (mem = tmalloc_small(ms, nb)) != 0) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4663 check_malloced_chunk(ms, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4664 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4665 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4666 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4667 } else if (bytes >= MAX_REQUEST) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4668 nb = MAX_SIZE_T; /* Too big to allocate. Force failure (in sys alloc) */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4669 else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4670 nb = pad_request(bytes); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4671 if (ms->treemap != 0 && (mem = tmalloc_large(ms, nb)) != 0) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4672 check_malloced_chunk(ms, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4673 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4674 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4675 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4676 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4677 if (nb <= ms->dvsize) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4678 size_t rsize = ms->dvsize - nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4679 mchunkptr p = ms->dv; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4680 if (rsize >= MIN_CHUNK_SIZE) { /* split dv */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4681 mchunkptr r = ms->dv = chunk_plus_offset(p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4682 ms->dvsize = rsize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4683 set_size_and_pinuse_of_free_chunk(r, rsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4684 set_size_and_pinuse_of_inuse_chunk(ms, p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4685 } else { /* exhaust dv */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4686 size_t dvs = ms->dvsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4687 ms->dvsize = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4688 ms->dv = 0; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4689 set_inuse_and_pinuse(ms, p, dvs); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4690 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4691 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4692 check_malloced_chunk(ms, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4693 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4694 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4695 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4696 else if (nb < ms->topsize) { /* Split top */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4697 size_t rsize = ms->topsize -= nb; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4698 mchunkptr p = ms->top; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4699 mchunkptr r = ms->top = chunk_plus_offset(p, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4700 r->head = rsize | PINUSE_BIT; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4701 set_size_and_pinuse_of_inuse_chunk(ms, p, nb); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4702 mem = chunk2mem(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4703 check_top_chunk(ms, ms->top); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4704 check_malloced_chunk(ms, mem, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4705 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4706 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4707 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4708 mem = sys_alloc(ms, nb); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4709 |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4710 postaction: |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4711 POSTACTION(ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4712 return mem; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4713 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4714 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4715 return 0; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4716 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4717 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4718 void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4719 mspace_free(mspace msp, void *mem) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4720 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4721 if (mem != 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4722 mchunkptr p = mem2chunk(mem); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4723 #if FOOTERS |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4724 mstate fm = get_mstate_for(p); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4725 #else /* FOOTERS */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4726 mstate fm = (mstate) msp; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4727 #endif /* FOOTERS */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4728 if (!ok_magic(fm)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4729 USAGE_ERROR_ACTION(fm, p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4730 return; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4731 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4732 if (!PREACTION(fm)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4733 check_inuse_chunk(fm, p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4734 if (RTCHECK(ok_address(fm, p) && ok_cinuse(p))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4735 size_t psize = chunksize(p); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4736 mchunkptr next = chunk_plus_offset(p, psize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4737 if (!pinuse(p)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4738 size_t prevsize = p->prev_foot; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4739 if ((prevsize & IS_MMAPPED_BIT) != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4740 prevsize &= ~IS_MMAPPED_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4741 psize += prevsize + MMAP_FOOT_PAD; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4742 if (CALL_MUNMAP((char *) p - prevsize, psize) == 0) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4743 fm->footprint -= psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4744 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4745 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4746 mchunkptr prev = chunk_minus_offset(p, prevsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4747 psize += prevsize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4748 p = prev; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4749 if (RTCHECK(ok_address(fm, prev))) { /* consolidate backward */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4750 if (p != fm->dv) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4751 unlink_chunk(fm, p, prevsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4752 } else if ((next->head & INUSE_BITS) == |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4753 INUSE_BITS) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4754 fm->dvsize = psize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4755 set_free_with_pinuse(p, psize, next); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4756 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4757 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4758 } else |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4759 goto erroraction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4760 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4761 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4762 |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4763 if (RTCHECK(ok_next(p, next) && ok_pinuse(next))) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4764 if (!cinuse(next)) { /* consolidate forward */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4765 if (next == fm->top) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4766 size_t tsize = fm->topsize += psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4767 fm->top = p; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4768 p->head = tsize | PINUSE_BIT; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4769 if (p == fm->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4770 fm->dv = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4771 fm->dvsize = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4772 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4773 if (should_trim(fm, tsize)) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4774 sys_trim(fm, 0); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4775 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4776 } else if (next == fm->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4777 size_t dsize = fm->dvsize += psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4778 fm->dv = p; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4779 set_size_and_pinuse_of_free_chunk(p, dsize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4780 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4781 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4782 size_t nsize = chunksize(next); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4783 psize += nsize; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4784 unlink_chunk(fm, next, nsize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4785 set_size_and_pinuse_of_free_chunk(p, psize); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4786 if (p == fm->dv) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4787 fm->dvsize = psize; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4788 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4789 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4790 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4791 } else |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4792 set_free_with_pinuse(p, psize, next); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4793 insert_chunk(fm, p, psize); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4794 check_free_chunk(fm, p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4795 goto postaction; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4796 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4797 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4798 erroraction: |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4799 USAGE_ERROR_ACTION(fm, p); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4800 postaction: |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4801 POSTACTION(fm); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4802 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4803 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4804 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4805 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4806 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4807 mspace_calloc(mspace msp, size_t n_elements, size_t elem_size) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4808 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4809 void *mem; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4810 size_t req = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4811 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4812 if (!ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4813 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4814 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4815 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4816 if (n_elements != 0) { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4817 req = n_elements * elem_size; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4818 if (((n_elements | elem_size) & ~(size_t) 0xffff) && |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4819 (req / n_elements != elem_size)) |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4820 req = MAX_SIZE_T; /* force downstream failure on overflow */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4821 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4822 mem = internal_malloc(ms, req); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4823 if (mem != 0 && calloc_must_clear(mem2chunk(mem))) |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4824 memset(mem, 0, req); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4825 return mem; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4826 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4827 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4828 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4829 mspace_realloc(mspace msp, void *oldmem, size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4830 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4831 if (oldmem == 0) |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4832 return mspace_malloc(msp, bytes); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4833 #ifdef REALLOC_ZERO_BYTES_FREES |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4834 if (bytes == 0) { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4835 mspace_free(msp, oldmem); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4836 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4837 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4838 #endif /* REALLOC_ZERO_BYTES_FREES */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4839 else { |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4840 #if FOOTERS |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4841 mchunkptr p = mem2chunk(oldmem); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4842 mstate ms = get_mstate_for(p); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4843 #else /* FOOTERS */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4844 mstate ms = (mstate) msp; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4845 #endif /* FOOTERS */ |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4846 if (!ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4847 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4848 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4849 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4850 return internal_realloc(ms, oldmem, bytes); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4851 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4852 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4853 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4854 void * |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4855 mspace_memalign(mspace msp, size_t alignment, size_t bytes) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4856 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4857 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4858 if (!ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4859 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4860 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4861 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4862 return internal_memalign(ms, alignment, bytes); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4863 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4864 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4865 void ** |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4866 mspace_independent_calloc(mspace msp, size_t n_elements, |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4867 size_t elem_size, void *chunks[]) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4868 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4869 size_t sz = elem_size; /* serves as 1-element array */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4870 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4871 if (!ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4872 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4873 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4874 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4875 return ialloc(ms, n_elements, &sz, 3, chunks); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4876 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4877 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4878 void ** |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4879 mspace_independent_comalloc(mspace msp, size_t n_elements, |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4880 size_t sizes[], void *chunks[]) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4881 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4882 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4883 if (!ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4884 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4885 return 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4886 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4887 return ialloc(ms, n_elements, sizes, 0, chunks); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4888 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4889 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4890 int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4891 mspace_trim(mspace msp, size_t pad) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4892 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4893 int result = 0; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4894 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4895 if (ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4896 if (!PREACTION(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4897 result = sys_trim(ms, pad); |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4898 POSTACTION(ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4899 } |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4900 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4901 USAGE_ERROR_ACTION(ms, ms); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4902 } |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4903 return result; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4904 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4905 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4906 void |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4907 mspace_malloc_stats(mspace msp) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4908 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4909 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4910 if (ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4911 internal_malloc_stats(ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4912 } else { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4913 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4914 } |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4915 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4916 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4917 size_t |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4918 mspace_footprint(mspace msp) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4919 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4920 size_t result; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4921 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4922 if (ok_magic(ms)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4923 result = ms->footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4924 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4925 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4926 return result; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4927 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4928 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4929 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4930 size_t |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4931 mspace_max_footprint(mspace msp) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4932 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4933 size_t result; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4934 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4935 if (ok_magic(ms)) { |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4936 result = ms->max_footprint; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4937 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4938 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4939 return result; |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4940 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4941 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4942 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4943 #if !NO_MALLINFO |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4944 struct mallinfo |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4945 mspace_mallinfo(mspace msp) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4946 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4947 mstate ms = (mstate) msp; |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4948 if (!ok_magic(ms)) { |
|
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4949 USAGE_ERROR_ACTION(ms, ms); |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4950 } |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4951 return internal_mallinfo(ms); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4952 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4953 #endif /* NO_MALLINFO */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4954 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4955 int |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4956 mspace_mallopt(int param_number, int value) |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
4957 { |
|
1668
4da1ee79c9af
more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents:
1662
diff
changeset
|
4958 return change_mparam(param_number, value); |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4959 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4960 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4961 #endif /* MSPACES */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4962 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4963 /* -------------------- Alternative MORECORE functions ------------------- */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4964 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4965 /* |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4966 Guidelines for creating a custom version of MORECORE: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4967 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4968 * For best performance, MORECORE should allocate in multiples of pagesize. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4969 * MORECORE may allocate more memory than requested. (Or even less, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4970 but this will usually result in a malloc failure.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4971 * MORECORE must not allocate memory when given argument zero, but |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4972 instead return one past the end address of memory from previous |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4973 nonzero call. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4974 * For best performance, consecutive calls to MORECORE with positive |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4975 arguments should return increasing addresses, indicating that |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4976 space has been contiguously extended. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4977 * Even though consecutive calls to MORECORE need not return contiguous |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4978 addresses, it must be OK for malloc'ed chunks to span multiple |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4979 regions in those cases where they do happen to be contiguous. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4980 * MORECORE need not handle negative arguments -- it may instead |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4981 just return MFAIL when given negative arguments. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4982 Negative arguments are always multiples of pagesize. MORECORE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4983 must not misinterpret negative args as large positive unsigned |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4984 args. You can suppress all such calls from even occurring by defining |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4985 MORECORE_CANNOT_TRIM, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4986 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4987 As an example alternative MORECORE, here is a custom allocator |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4988 kindly contributed for pre-OSX macOS. It uses virtually but not |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4989 necessarily physically contiguous non-paged memory (locked in, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4990 present and won't get swapped out). You can use it by uncommenting |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4991 this section, adding some #includes, and setting up the appropriate |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4992 defines above: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4993 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4994 #define MORECORE osMoreCore |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4995 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4996 There is also a shutdown routine that should somehow be called for |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4997 cleanup upon program exit. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4998 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4999 #define MAX_POOL_ENTRIES 100 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5000 #define MINIMUM_MORECORE_SIZE (64 * 1024U) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5001 static int next_os_pool; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5002 void *our_os_pools[MAX_POOL_ENTRIES]; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5003 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5004 void *osMoreCore(int size) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5005 { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5006 void *ptr = 0; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5007 static void *sbrk_top = 0; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5008 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5009 if (size > 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5010 { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5011 if (size < MINIMUM_MORECORE_SIZE) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5012 size = MINIMUM_MORECORE_SIZE; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5013 if (CurrentExecutionLevel() == kTaskLevel) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5014 ptr = PoolAllocateResident(size + RM_PAGE_SIZE, 0); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5015 if (ptr == 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5016 { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5017 return (void *) MFAIL; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5018 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5019 // save ptrs so they can be freed during cleanup |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5020 our_os_pools[next_os_pool] = ptr; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5021 next_os_pool++; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5022 ptr = (void *) ((((size_t) ptr) + RM_PAGE_MASK) & ~RM_PAGE_MASK); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5023 sbrk_top = (char *) ptr + size; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5024 return ptr; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5025 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5026 else if (size < 0) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5027 { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5028 // we don't currently support shrink behavior |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5029 return (void *) MFAIL; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5030 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5031 else |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5032 { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5033 return sbrk_top; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5034 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5035 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5036 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5037 // cleanup any allocated memory pools |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5038 // called as last thing before shutting down driver |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5039 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5040 void osCleanupMem(void) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5041 { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5042 void **ptr; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5043 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5044 for (ptr = our_os_pools; ptr < &our_os_pools[MAX_POOL_ENTRIES]; ptr++) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5045 if (*ptr) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5046 { |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5047 PoolDeallocate(*ptr); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5048 *ptr = 0; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5049 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5050 } |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5051 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5052 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5053 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5054 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5055 /* ----------------------------------------------------------------------- |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5056 History: |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5057 V2.8.3 Thu Sep 22 11:16:32 2005 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5058 * Add max_footprint functions |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5059 * Ensure all appropriate literals are size_t |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5060 * Fix conditional compilation problem for some #define settings |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5061 * Avoid concatenating segments with the one provided |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5062 in create_mspace_with_base |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5063 * Rename some variables to avoid compiler shadowing warnings |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5064 * Use explicit lock initialization. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5065 * Better handling of sbrk interference. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5066 * Simplify and fix segment insertion, trimming and mspace_destroy |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5067 * Reinstate REALLOC_ZERO_BYTES_FREES option from 2.7.x |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5068 * Thanks especially to Dennis Flanagan for help on these. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5069 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5070 V2.8.2 Sun Jun 12 16:01:10 2005 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5071 * Fix memalign brace error. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5072 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5073 V2.8.1 Wed Jun 8 16:11:46 2005 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5074 * Fix improper #endif nesting in C++ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5075 * Add explicit casts needed for C++ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5076 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5077 V2.8.0 Mon May 30 14:09:02 2005 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5078 * Use trees for large bins |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5079 * Support mspaces |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5080 * Use segments to unify sbrk-based and mmap-based system allocation, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5081 removing need for emulation on most platforms without sbrk. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5082 * Default safety checks |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5083 * Optional footer checks. Thanks to William Robertson for the idea. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5084 * Internal code refactoring |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5085 * Incorporate suggestions and platform-specific changes. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5086 Thanks to Dennis Flanagan, Colin Plumb, Niall Douglas, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5087 Aaron Bachmann, Emery Berger, and others. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5088 * Speed up non-fastbin processing enough to remove fastbins. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5089 * Remove useless cfree() to avoid conflicts with other apps. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5090 * Remove internal memcpy, memset. Compilers handle builtins better. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5091 * Remove some options that no one ever used and rename others. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5092 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5093 V2.7.2 Sat Aug 17 09:07:30 2002 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5094 * Fix malloc_state bitmap array misdeclaration |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5095 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5096 V2.7.1 Thu Jul 25 10:58:03 2002 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5097 * Allow tuning of FIRST_SORTED_BIN_SIZE |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5098 * Use PTR_UINT as type for all ptr->int casts. Thanks to John Belmonte. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5099 * Better detection and support for non-contiguousness of MORECORE. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5100 Thanks to Andreas Mueller, Conal Walsh, and Wolfram Gloger |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5101 * Bypass most of malloc if no frees. Thanks To Emery Berger. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5102 * Fix freeing of old top non-contiguous chunk im sysmalloc. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5103 * Raised default trim and map thresholds to 256K. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5104 * Fix mmap-related #defines. Thanks to Lubos Lunak. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5105 * Fix copy macros; added LACKS_FCNTL_H. Thanks to Neal Walfield. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5106 * Branch-free bin calculation |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5107 * Default trim and mmap thresholds now 256K. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5108 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5109 V2.7.0 Sun Mar 11 14:14:06 2001 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5110 * Introduce independent_comalloc and independent_calloc. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5111 Thanks to Michael Pachos for motivation and help. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5112 * Make optional .h file available |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5113 * Allow > 2GB requests on 32bit systems. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5114 * new WIN32 sbrk, mmap, munmap, lock code from <Walter@GeNeSys-e.de>. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5115 Thanks also to Andreas Mueller <a.mueller at paradatec.de>, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5116 and Anonymous. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5117 * Allow override of MALLOC_ALIGNMENT (Thanks to Ruud Waij for |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5118 helping test this.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5119 * memalign: check alignment arg |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5120 * realloc: don't try to shift chunks backwards, since this |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5121 leads to more fragmentation in some programs and doesn't |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5122 seem to help in any others. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5123 * Collect all cases in malloc requiring system memory into sysmalloc |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5124 * Use mmap as backup to sbrk |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5125 * Place all internal state in malloc_state |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5126 * Introduce fastbins (although similar to 2.5.1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5127 * Many minor tunings and cosmetic improvements |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5128 * Introduce USE_PUBLIC_MALLOC_WRAPPERS, USE_MALLOC_LOCK |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5129 * Introduce MALLOC_FAILURE_ACTION, MORECORE_CONTIGUOUS |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5130 Thanks to Tony E. Bennett <tbennett@nvidia.com> and others. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5131 * Include errno.h to support default failure action. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5132 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5133 V2.6.6 Sun Dec 5 07:42:19 1999 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5134 * return null for negative arguments |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5135 * Added Several WIN32 cleanups from Martin C. Fong <mcfong at yahoo.com> |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5136 * Add 'LACKS_SYS_PARAM_H' for those systems without 'sys/param.h' |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5137 (e.g. WIN32 platforms) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5138 * Cleanup header file inclusion for WIN32 platforms |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5139 * Cleanup code to avoid Microsoft Visual C++ compiler complaints |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5140 * Add 'USE_DL_PREFIX' to quickly allow co-existence with existing |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5141 memory allocation routines |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5142 * Set 'malloc_getpagesize' for WIN32 platforms (needs more work) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5143 * Use 'assert' rather than 'ASSERT' in WIN32 code to conform to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5144 usage of 'assert' in non-WIN32 code |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5145 * Improve WIN32 'sbrk()' emulation's 'findRegion()' routine to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5146 avoid infinite loop |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5147 * Always call 'fREe()' rather than 'free()' |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5148 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5149 V2.6.5 Wed Jun 17 15:57:31 1998 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5150 * Fixed ordering problem with boundary-stamping |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5151 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5152 V2.6.3 Sun May 19 08:17:58 1996 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5153 * Added pvalloc, as recommended by H.J. Liu |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5154 * Added 64bit pointer support mainly from Wolfram Gloger |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5155 * Added anonymously donated WIN32 sbrk emulation |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5156 * Malloc, calloc, getpagesize: add optimizations from Raymond Nijssen |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5157 * malloc_extend_top: fix mask error that caused wastage after |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5158 foreign sbrks |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5159 * Add linux mremap support code from HJ Liu |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5160 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5161 V2.6.2 Tue Dec 5 06:52:55 1995 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5162 * Integrated most documentation with the code. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5163 * Add support for mmap, with help from |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5164 Wolfram Gloger (Gloger@lrz.uni-muenchen.de). |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5165 * Use last_remainder in more cases. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5166 * Pack bins using idea from colin@nyx10.cs.du.edu |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5167 * Use ordered bins instead of best-fit threshhold |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5168 * Eliminate block-local decls to simplify tracing and debugging. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5169 * Support another case of realloc via move into top |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5170 * Fix error occuring when initial sbrk_base not word-aligned. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5171 * Rely on page size for units instead of SBRK_UNIT to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5172 avoid surprises about sbrk alignment conventions. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5173 * Add mallinfo, mallopt. Thanks to Raymond Nijssen |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5174 (raymond@es.ele.tue.nl) for the suggestion. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5175 * Add `pad' argument to malloc_trim and top_pad mallopt parameter. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5176 * More precautions for cases where other routines call sbrk, |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5177 courtesy of Wolfram Gloger (Gloger@lrz.uni-muenchen.de). |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5178 * Added macros etc., allowing use in linux libc from |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5179 H.J. Lu (hjl@gnu.ai.mit.edu) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5180 * Inverted this history list |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5181 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5182 V2.6.1 Sat Dec 2 14:10:57 1995 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5183 * Re-tuned and fixed to behave more nicely with V2.6.0 changes. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5184 * Removed all preallocation code since under current scheme |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5185 the work required to undo bad preallocations exceeds |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5186 the work saved in good cases for most test programs. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5187 * No longer use return list or unconsolidated bins since |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5188 no scheme using them consistently outperforms those that don't |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5189 given above changes. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5190 * Use best fit for very large chunks to prevent some worst-cases. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5191 * Added some support for debugging |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5192 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5193 V2.6.0 Sat Nov 4 07:05:23 1995 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5194 * Removed footers when chunks are in use. Thanks to |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5195 Paul Wilson (wilson@cs.texas.edu) for the suggestion. |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5196 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5197 V2.5.4 Wed Nov 1 07:54:51 1995 Doug Lea (dl at gee) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5198 * Added malloc_trim, with help from Wolfram Gloger |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5199 (wmglo@Dent.MED.Uni-Muenchen.DE). |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5200 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5201 V2.5.3 Tue Apr 26 10:16:01 1994 Doug Lea (dl at g) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5202 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5203 V2.5.2 Tue Apr 5 16:20:40 1994 Doug Lea (dl at g) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5204 * realloc: try to expand in both directions |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5205 * malloc: swap order of clean-bin strategy; |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5206 * realloc: only conditionally expand backwards |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5207 * Try not to scavenge used bins |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5208 * Use bin counts as a guide to preallocation |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5209 * Occasionally bin return list chunks in first scan |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5210 * Add a few optimizations from colin@nyx10.cs.du.edu |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5211 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5212 V2.5.1 Sat Aug 14 15:40:43 1993 Doug Lea (dl at g) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5213 * faster bin computation & slightly different binning |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5214 * merged all consolidations to one part of malloc proper |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5215 (eliminating old malloc_find_space & malloc_clean_bin) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5216 * Scan 2 returns chunks (not just 1) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5217 * Propagate failure in realloc if malloc returns 0 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5218 * Add stuff to allow compilation on non-ANSI compilers |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5219 from kpv@research.att.com |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5220 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5221 V2.5 Sat Aug 7 07:41:59 1993 Doug Lea (dl at g.oswego.edu) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5222 * removed potential for odd address access in prev_chunk |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5223 * removed dependency on getpagesize.h |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5224 * misc cosmetics and a bit more internal documentation |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5225 * anticosmetics: mangled names in macros to evade debugger strangeness |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5226 * tested on sparc, hp-700, dec-mips, rs6000 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5227 with gcc & native cc (hp, dec only) allowing |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5228 Detlefs & Zorn comparison study (in SIGPLAN Notices.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5229 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5230 Trial version Fri Aug 28 13:14:29 1992 Doug Lea (dl at g.oswego.edu) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5231 * Based loosely on libg++-1.2X malloc. (It retains some of the overall |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5232 structure of old version, but most details differ.) |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5233 |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5234 */ |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5235 |
|
1333
39b0d60d3f50
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
5236 #endif /* !HAVE_MALLOC */ |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1465
diff
changeset
|
5237 /* vi: set ts=4 sw=4 expandtab: */ |