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annotate src/atomic/macosx/SDL_atomic.c @ 3306:a8ec88ff18c7

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This version actaully should work on Windows.
author Bob Pendleton <bob@pendleton.com>
date Fri, 25 Sep 2009 19:17:16 +0000
parents 72b542f34739
children 0e000afe3dc0
rev   line source
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3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
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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
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
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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
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
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22 Contributed by Bob Pendleton, bob@pendleton.com
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23 */
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24
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25 #include "SDL_stdinc.h"
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26 #include "SDL_atomic.h"
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28 #include "SDL_error.h"
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29
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30 /*
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31 This file provides 32, and 64 bit atomic operations. If the
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32 operations are provided by the native hardware and operating system
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33 they are used. If they are not then the operations are emulated
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34 using the SDL spin lock operations. If spin lock can not be
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35 implemented then these functions must fail.
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36 */
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37
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38 /*
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39 DUMMY VERSION.
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40
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41 This version of the code assumes there is no support for atomic
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42 operations. Therefore, every function sets the SDL error
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
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43 message. Oddly enough, if you only have one thread then this
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44 version actuallys works.
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45 */
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46
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47 /*
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48 Native spinlock routines. Because this is the dummy implementation
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49 these will always call SDL_SetError() and do nothing.
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50 */
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51
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52 void
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53 SDL_AtomicLock(SDL_SpinLock *lock)
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54 {
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55 SDL_SetError("SDL_atomic.c: is not implemented on this platform");
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56 }
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57
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58 void
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59 SDL_AtomicUnlock(SDL_SpinLock *lock)
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60 {
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61 SDL_SetError("SDL_atomic.c: is not implemented on this platform");
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62 }
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63
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64 /*
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65 Note that platform specific versions can be built from this version
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66 by changing the #undefs to #defines and adding platform specific
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67 code.
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68 */
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69
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70 #undef nativeTestThenSet32
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71 #undef nativeClear32
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72 #undef nativeFetchThenIncrement32
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73 #undef nativeFetchThenDecrement32
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74 #undef nativeFetchThenAdd32
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75 #undef nativeFetchThenSubtract32
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76 #undef nativeIncrementThenFetch32
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77 #undef nativeDecrementThenFetch32
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78 #undef nativeAddThenFetch32
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79 #undef nativeSubtractThenFetch32
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81 #undef nativeTestThenSet64
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82 #undef nativeClear64
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83 #undef nativeFetchThenIncrement64
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84 #undef nativeFetchThenDecrement64
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85 #undef nativeFetchThenAdd64
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86 #undef nativeFetchThenSubtract64
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87 #undef nativeIncrementThenFetch64
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88 #undef nativeDecrementThenFetch64
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89 #undef nativeAddThenFetch64
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90 #undef nativeSubtractThenFetch64
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91
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92 /*
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93 If any of the operations are not provided then we must emulate some
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94 of them. That means we need a nice implementation of spin locks
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95 that avoids the "one big lock" problem. We use a vector of spin
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96 locks and pick which one to use based on the address of the operand
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97 of the function.
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98
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99 To generate the index of the lock we first shift by 3 bits to get
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100 rid on the zero bits that result from 32 and 64 bit allignment of
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101 data. We then mask off all but 5 bits and use those 5 bits as an
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102 index into the table.
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103
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104 Picking the lock this way insures that accesses to the same data at
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105 the same time will go to the same lock. OTOH, accesses to different
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106 data have only a 1/32 chance of hitting the same lock. That should
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107 pretty much eliminate the chances of several atomic operations on
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108 different data from waiting on the same "big lock". If it isn't
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109 then the table of locks can be expanded to a new size so long as
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110 the new size if a power of two.
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111 */
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112
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113 static SDL_SpinLock locks[32] = {
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114 0, 0, 0, 0, 0, 0, 0, 0,
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115 0, 0, 0, 0, 0, 0, 0, 0,
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116 0, 0, 0, 0, 0, 0, 0, 0,
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117 0, 0, 0, 0, 0, 0, 0, 0,
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118 };
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119
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
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120 static __inline__ void
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121 privateWaitLock(volatile void *ptr)
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122 {
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123 #if SIZEOF_VOIDP == 4
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124 Uint32 index = ((((Uint32)ptr) >> 3) & 0x1f);
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125 #elif SIZEOF_VOIDP == 8
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126 Uint64 index = ((((Uint64)ptr) >> 3) & 0x1f);
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127 #endif
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128
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129 SDL_AtomicLock(&locks[index]);
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130 }
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131
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132 static __inline__ void
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133 privateUnlock(volatile void *ptr)
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134 {
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135 #if SIZEOF_VOIDP == 4
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136 Uint32 index = ((((Uint32)ptr) >> 3) & 0x1f);
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137 #elif SIZEOF_VOIDP == 8
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138 Uint64 index = ((((Uint64)ptr) >> 3) & 0x1f);
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139 #endif
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140
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141 SDL_AtomicUnlock(&locks[index]);
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142 }
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143
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144 /* 32 bit atomic operations */
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145
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146 SDL_bool
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147 SDL_AtomicTestThenSet32(volatile Uint32 * ptr)
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148 {
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149 #ifdef nativeTestThenSet32
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150 #else
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151 SDL_bool result = SDL_FALSE;
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152
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153 privateWaitLock(ptr);
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154 result = (*ptr == 0);
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155 if (result)
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156 {
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157 *ptr = 1;
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158 }
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159 privateUnlock(ptr);
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160
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161 return result;
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162 #endif
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163 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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164
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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165 void
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166 SDL_AtomicClear32(volatile Uint32 * ptr)
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167 {
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168 #ifdef nativeClear32
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169 #else
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170 privateWaitLock(ptr);
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171 *ptr = 0;
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172 privateUnlock(ptr);
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173
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174 return;
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175 #endif
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176 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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177
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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178 Uint32
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179 SDL_AtomicFetchThenIncrement32(volatile Uint32 * ptr)
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180 {
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181 #ifdef nativeFetchThenIncrement32
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182 #else
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183 Uint32 tmp = 0;
3202
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184
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185 privateWaitLock(ptr);
3202
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186 tmp = *ptr;
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187 (*ptr)+= 1;
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188 privateUnlock(ptr);
3202
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189
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190 return tmp;
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diff changeset
191 #endif
3199
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192 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
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diff changeset
193
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
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194 Uint32
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195 SDL_AtomicFetchThenDecrement32(volatile Uint32 * ptr)
3199
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196 {
3202
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197 #ifdef nativeFetchThenDecrement32
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diff changeset
198 #else
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199 Uint32 tmp = 0;
3202
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200
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201 privateWaitLock(ptr);
3202
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diff changeset
202 tmp = *ptr;
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203 (*ptr) -= 1;
3261
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204 privateUnlock(ptr);
3202
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diff changeset
205
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206 return tmp;
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diff changeset
207 #endif
3199
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208 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
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209
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
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diff changeset
210 Uint32
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211 SDL_AtomicFetchThenAdd32(volatile Uint32 * ptr, Uint32 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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212 {
3202
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diff changeset
213 #ifdef nativeFetchThenAdd32
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214 #else
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215 Uint32 tmp = 0;
3202
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diff changeset
216
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diff changeset
217 privateWaitLock(ptr);
3202
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diff changeset
218 tmp = *ptr;
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219 (*ptr)+= value;
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diff changeset
220 privateUnlock(ptr);
3202
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diff changeset
221
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222 return tmp;
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diff changeset
223 #endif
3199
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224 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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225
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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226 Uint32
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227 SDL_AtomicFetchThenSubtract32(volatile Uint32 * ptr, Uint32 value)
3199
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228 {
3202
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229 #ifdef nativeFetchThenSubtract32
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diff changeset
230 #else
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231 Uint32 tmp = 0;
3202
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232
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diff changeset
233 privateWaitLock(ptr);
3202
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diff changeset
234 tmp = *ptr;
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235 (*ptr)-= value;
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diff changeset
236 privateUnlock(ptr);
3202
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diff changeset
237
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diff changeset
238 return tmp;
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diff changeset
239 #endif
3199
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240 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
241
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
242 Uint32
3236
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Bob Pendleton <bob@pendleton.com>
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diff changeset
243 SDL_AtomicIncrementThenFetch32(volatile Uint32 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
244 {
3202
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diff changeset
245 #ifdef nativeIncrementThenFetch32
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Bob Pendleton <bob@pendleton.com>
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diff changeset
246 #else
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diff changeset
247 Uint32 tmp = 0;
3202
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diff changeset
248
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parents: 3236
diff changeset
249 privateWaitLock(ptr);
3202
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diff changeset
250 (*ptr)+= 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
251 tmp = *ptr;
3261
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parents: 3236
diff changeset
252 privateUnlock(ptr);
3202
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diff changeset
253
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
254 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
255 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
256 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
257
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
258 Uint32
3236
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Bob Pendleton <bob@pendleton.com>
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diff changeset
259 SDL_AtomicDecrementThenFetch32(volatile Uint32 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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parents:
diff changeset
260 {
3202
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parents: 3199
diff changeset
261 #ifdef nativeDecrementThenFetch32
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diff changeset
262 #else
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diff changeset
263 Uint32 tmp = 0;
3202
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parents: 3199
diff changeset
264
3261
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Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
265 privateWaitLock(ptr);
3202
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diff changeset
266 (*ptr)-= 1;
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
267 tmp = *ptr;
3261
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diff changeset
268 privateUnlock(ptr);
3202
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diff changeset
269
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Bob Pendleton <bob@pendleton.com>
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diff changeset
270 return tmp;
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
271 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
272 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
273
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
274 Uint32
3236
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Bob Pendleton <bob@pendleton.com>
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275 SDL_AtomicAddThenFetch32(volatile Uint32 * ptr, Uint32 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
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276 {
3202
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diff changeset
277 #ifdef nativeAddThenFetch32
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diff changeset
278 #else
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279 Uint32 tmp = 0;
3202
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diff changeset
280
3261
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Bob Pendleton <bob@pendleton.com>
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281 privateWaitLock(ptr);
3202
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diff changeset
282 (*ptr)+= value;
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Bob Pendleton <bob@pendleton.com>
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diff changeset
283 tmp = *ptr;
3261
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Bob Pendleton <bob@pendleton.com>
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diff changeset
284 privateUnlock(ptr);
3202
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diff changeset
285
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Bob Pendleton <bob@pendleton.com>
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diff changeset
286 return tmp;
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Bob Pendleton <bob@pendleton.com>
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diff changeset
287 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
288 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
289
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
290 Uint32
3236
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Bob Pendleton <bob@pendleton.com>
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diff changeset
291 SDL_AtomicSubtractThenFetch32(volatile Uint32 * ptr, Uint32 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
292 {
3202
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diff changeset
293 #ifdef nativeSubtractThenFetch32
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Bob Pendleton <bob@pendleton.com>
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diff changeset
294 #else
3212
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diff changeset
295 Uint32 tmp = 0;
3202
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diff changeset
296
3261
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Bob Pendleton <bob@pendleton.com>
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diff changeset
297 privateWaitLock(ptr);
3202
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diff changeset
298 (*ptr)-= value;
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parents: 3199
diff changeset
299 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
300 privateUnlock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
301
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
302 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
303 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
304 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
305
3202
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Bob Pendleton <bob@pendleton.com>
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diff changeset
306 /* 64 bit atomic operations */
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
307 #ifdef SDL_HAS_64BIT_TYPE
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
308
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
309 SDL_bool
3236
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Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
310 SDL_AtomicTestThenSet64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
311 {
3202
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Bob Pendleton <bob@pendleton.com>
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diff changeset
312 #ifdef nativeTestThenSet64
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Bob Pendleton <bob@pendleton.com>
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diff changeset
313 #else
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
314 SDL_bool result = SDL_FALSE;
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
315
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
316 privateWaitLock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
317 result = (*ptr == 0);
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
318 if (result)
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
319 {
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
320 *ptr = 1;
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
321 }
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
322 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
323
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
324 return result;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
325 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
326 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
327
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
328 void
3236
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Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
329 SDL_AtomicClear64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
330 {
3202
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parents: 3199
diff changeset
331 #ifdef nativeClear64
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
332 #else
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
333 privateWaitLock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
334 *ptr = 0;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
335 privateUnlock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
336
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
337 return;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
338 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
339 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
340
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
341 Uint64
3236
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Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
342 SDL_AtomicFetchThenIncrement64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
343 {
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
344 #ifdef nativeFetchThenIncrement64
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Bob Pendleton <bob@pendleton.com>
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diff changeset
345 #else
3212
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Bob Pendleton <bob@pendleton.com>
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diff changeset
346 Uint64 tmp = 0;
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
347
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
348 privateWaitLock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
349 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
350 (*ptr)+= 1;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
351 privateUnlock(ptr);
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
352
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
353 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
354 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
355 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
356
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
357 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
358 SDL_AtomicFetchThenDecrement64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
359 {
3202
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
360 #ifdef nativeFetchThenDecrement64
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Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
361 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
362 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
363
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
364 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
365 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
366 (*ptr) -= 1;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
367 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
368
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
369 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
370 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
371 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
372
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
373 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
374 SDL_AtomicFetchThenAdd64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
375 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
376 #ifdef nativeFetchThenAdd64
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
377 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
378 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
379
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
380 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
381 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
382 (*ptr)+= value;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
383 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
384
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
385 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
386 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
387 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
388
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
389 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
390 SDL_AtomicFetchThenSubtract64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
391 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
392 #ifdef nativeFetchThenSubtract64
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
393 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
394 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
395
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
396 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
397 tmp = *ptr;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
398 (*ptr)-= value;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
399 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
400
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
401 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
402 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
403 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
404
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
405 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
406 SDL_AtomicIncrementThenFetch64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
407 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
408 #ifdef nativeIncrementThenFetch64
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
409 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
410 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
411
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
412 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
413 (*ptr)+= 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
414 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
415 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
416
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
417 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
418 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
419 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
420
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
421 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
422 SDL_AtomicDecrementThenFetch64(volatile Uint64 * ptr)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
423 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
424 #ifdef nativeDecrementThenFetch64
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
425 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
426 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
427
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
428 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
429 (*ptr)-= 1;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
430 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
431 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
432
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
433 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
434 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
435 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
436
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
437 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
438 SDL_AtomicAddThenFetch64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
439 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
440 #ifdef nativeAddThenFetch64
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
441 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
442 Uint64 tmp = 0;
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
443
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
444 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
445 (*ptr)+= value;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
446 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
447 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
448
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
449 return tmp;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
450 #endif
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
451 }
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
452
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
453 Uint64
3236
d7497988b677 I forgot to copy the dummy version to macosx.
Bob Pendleton <bob@pendleton.com>
parents: 3212
diff changeset
454 SDL_AtomicSubtractThenFetch64(volatile Uint64 * ptr, Uint64 value)
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
455 {
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
456 #ifdef nativeSubtractThenFetch64
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
457 #else
3212
759032c318d8 This is a cosmetic fix, I found a stupid typo
Bob Pendleton <bob@pendleton.com>
parents: 3202
diff changeset
458 Uint64 tmp = 0;
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
459
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
460 privateWaitLock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
461 (*ptr)-= value;
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
462 tmp = *ptr;
3261
72b542f34739 The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
Bob Pendleton <bob@pendleton.com>
parents: 3236
diff changeset
463 privateUnlock(ptr);
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
464
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
465 return tmp;
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
466 #endif
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
467 }
3199
3e1bf2b8bd81 This check in updates SDL_atomic.h to reflect the new set of atomic operations in 32 and 64 bit form.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
468 #endif
3202
3aa519a5c676 I've made so many changes I don't dare continue until I check the current stuff in.
Bob Pendleton <bob@pendleton.com>
parents: 3199
diff changeset
469