Mercurial > sdl-ios-xcode
annotate src/thread/os2/SDL_syssem.c @ 3168:6338b7f2d024
Hi,
I have prepared a set of patches to readd WindowsCE support to SDL 1.3.
I've created a new GAPI/Rawframebuffer and a DirectDraw renderer.
Both renderers are work in progress and there are several unimplemented
cases. (Notably
RenderLine/RenderPoint/RenderFill/QueryTexturePixels/UpdateTexture and
texture blending )
Nevertheless I am successfully using these renderers together with the
SDL software renderer. (On most devices the SDL software renderer will
be much faster as there are only badly optimized vendor drivers available)
I send these patches now in this unpolished state because there seems to
be some interest in win ce and someone has to start supporting SDL 1.3
Now on to the patches:
wince_events_window_fixes.patch
fixes some wince incompatibilities and adds fullscreen support via
SHFullScreen. NOTE: This patch shouldn't have any side effects on
Windows, but I have NOT tested it on Windows, so please double-check.
This patch doesn't dependent on the following ones.
wince_renderers_system.patch
This patch does all necessary modifications to the SDL system.
- it adds the renderers to the configure system
- it adds the renderers to win32video
SDL_ceddrawrender.c
SDL_ceddrawrender.h
SDL_gapirender_c.h
SDL_gapirender.c
SDL_gapirender.h
these files add the new render drivers and should be placed in
src/video/win32
Some notes to people who want to test this:
- I have only compiled sdl with ming32ce, so the VisualC files are not
up to date
- As mingw32ce has no ddraw.h this file must be taken from the MS SDK
and modified to work with gcc
- I had to modify line 2611 in configure.in to
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lcoredll -lcommctrl -lmmtimer
-Wl,--image-base -Wl,0x10000"
otherwise GetCPinfo wouldn't link. If someone knows whats causing this
I'd be happy to hear about it.
It would be great if these patches could make their way into SVN as this
would make collaboration much much easier.
I'm out of office for the next week and therefore will be unavailable
via email.
Regards
Stefan
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 07 Jun 2009 02:44:46 +0000 |
parents | 99210400e8b9 |
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rev | line source |
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1190 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
1190 | 4 |
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 |
1190 | 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. |
1190 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
1190 | 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 |
1190 | 18 |
19 Sam Lantinga | |
20 slouken@libsdl.org | |
21 */ | |
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22 #include "SDL_config.h" |
1190 | 23 |
24 /* Semaphore functions using the OS/2 API */ | |
25 | |
26 #define INCL_DOS | |
27 #define INCL_DOSERRORS | |
28 #define INCL_DOSSEMAPHORES | |
29 #include <os2.h> | |
30 | |
31 #include "SDL_thread.h" | |
32 #include "SDL_timer.h" | |
33 | |
34 | |
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35 struct SDL_semaphore |
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36 { |
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37 HMTX id; |
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38 HEV changed; |
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39 Uint32 value; |
1190 | 40 }; |
41 | |
42 | |
43 /* Create a semaphore */ | |
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44 DECLSPEC SDL_sem *SDLCALL |
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45 SDL_CreateSemaphore(Uint32 initial_value) |
1190 | 46 { |
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47 SDL_sem *sem; |
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48 ULONG ulrc; |
1190 | 49 |
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50 /* Allocate sem memory */ |
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51 sem = (SDL_sem *) SDL_malloc(sizeof(*sem)); |
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52 if (sem) { |
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53 /* Create the mutex semaphore */ |
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54 ulrc = DosCreateMutexSem(NULL, &(sem->id), 0, TRUE); |
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55 if (ulrc) { |
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56 SDL_SetError("Couldn't create semaphore"); |
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57 SDL_free(sem); |
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58 sem = NULL; |
1190 | 59 } else { |
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60 DosCreateEventSem(NULL, &(sem->changed), 0, FALSE); |
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61 sem->value = initial_value; |
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62 DosReleaseMutexSem(sem->id); |
1190 | 63 } |
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64 } else { |
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65 SDL_OutOfMemory(); |
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66 } |
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67 return (sem); |
1190 | 68 } |
69 | |
70 /* Free the semaphore */ | |
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71 DECLSPEC void SDLCALL |
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72 SDL_DestroySemaphore(SDL_sem * sem) |
1190 | 73 { |
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74 if (sem) { |
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75 if (sem->id) { |
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76 DosCloseEventSem(sem->changed); |
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77 DosCloseMutexSem(sem->id); |
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78 sem->id = 0; |
1190 | 79 } |
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80 SDL_free(sem); |
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81 } |
1190 | 82 } |
83 | |
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84 DECLSPEC int SDLCALL |
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85 SDL_SemWaitTimeout(SDL_sem * sem, Uint32 timeout) |
1190 | 86 { |
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87 ULONG ulrc; |
1190 | 88 |
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89 if (!sem) { |
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90 SDL_SetError("Passed a NULL sem"); |
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91 return -1; |
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92 } |
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93 |
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94 if (timeout == SDL_MUTEX_MAXWAIT) { |
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95 while (1) { |
1190 | 96 ulrc = DosRequestMutexSem(sem->id, SEM_INDEFINITE_WAIT); |
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97 if (ulrc) { |
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98 /* if error waiting mutex */ |
1190 | 99 SDL_SetError("DosRequestMutexSem() failed"); |
100 return -1; | |
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101 } else if (sem->value) { |
1190 | 102 sem->value--; |
103 DosReleaseMutexSem(sem->id); | |
104 return 0; | |
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105 } else { |
1190 | 106 ULONG ulPostCount; |
107 DosResetEventSem(sem->changed, &ulPostCount); | |
108 DosReleaseMutexSem(sem->id); | |
109 /* continue waiting until somebody posts the semaphore */ | |
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110 DosWaitEventSem(sem->changed, SEM_INDEFINITE_WAIT); |
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111 } |
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112 } |
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113 } else if (timeout == 0) { |
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114 ulrc = DosRequestMutexSem(sem->id, SEM_INDEFINITE_WAIT); |
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115 if (ulrc == NO_ERROR) { |
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116 if (sem->value) { |
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117 sem->value--; |
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118 DosReleaseMutexSem(sem->id); |
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119 return 0; |
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120 } else { |
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121 DosReleaseMutexSem(sem->id); |
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122 return SDL_MUTEX_TIMEDOUT; |
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123 } |
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124 } else { |
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125 SDL_SetError("DosRequestMutexSem() failed"); |
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126 return -1; |
1190 | 127 } |
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128 } else { |
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129 ulrc = DosRequestMutexSem(sem->id, SEM_INDEFINITE_WAIT); |
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130 if (ulrc) { |
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131 /* if error waiting mutex */ |
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132 SDL_SetError("DosRequestMutexSem() failed"); |
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133 return -1; |
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134 } else if (sem->value) { |
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135 sem->value--; |
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136 DosReleaseMutexSem(sem->id); |
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137 return 0; |
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138 } else { |
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139 ULONG ulPostCount; |
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140 DosResetEventSem(sem->changed, &ulPostCount); |
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141 DosReleaseMutexSem(sem->id); |
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142 /* continue waiting until somebody posts the semaphore */ |
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143 ulrc = DosWaitEventSem(sem->changed, timeout); |
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144 if (ulrc == NO_ERROR) |
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145 return 0; |
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146 else |
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147 return SDL_MUTEX_TIMEDOUT; |
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148 } |
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149 } |
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150 /* never reached */ |
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151 return -1; |
1190 | 152 } |
153 | |
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154 DECLSPEC int SDLCALL |
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155 SDL_SemTryWait(SDL_sem * sem) |
1190 | 156 { |
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157 return SDL_SemWaitTimeout(sem, 0); |
1190 | 158 } |
159 | |
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160 DECLSPEC int SDLCALL |
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161 SDL_SemWait(SDL_sem * sem) |
1190 | 162 { |
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163 return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT); |
1190 | 164 } |
165 | |
166 /* Returns the current count of the semaphore */ | |
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167 DECLSPEC Uint32 SDLCALL |
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168 SDL_SemValue(SDL_sem * sem) |
1190 | 169 { |
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170 if (!sem) { |
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171 SDL_SetError("Passed a NULL sem"); |
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172 return 0; |
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173 } |
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174 return sem->value; |
1190 | 175 } |
176 | |
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177 DECLSPEC int SDLCALL |
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178 SDL_SemPost(SDL_sem * sem) |
1190 | 179 { |
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180 if (!sem) { |
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181 SDL_SetError("Passed a NULL sem"); |
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182 return -1; |
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183 } |
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184 if (DosRequestMutexSem(sem->id, SEM_INDEFINITE_WAIT)) { |
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185 SDL_SetError("DosRequestMutexSem() failed"); |
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186 return -1; |
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187 } |
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188 sem->value++; |
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189 DosPostEventSem(sem->changed); |
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190 DosReleaseMutexSem(sem->id); |
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191 return 0; |
1190 | 192 } |
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193 |
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194 /* vi: set ts=4 sw=4 expandtab: */ |