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annotate src/thread/win32/SDL_systhread.c @ 4135:cd98d1dc385c SDL-1.2

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Damien Carbery fixed bug #542 In SDL 1.2.13 sdl.m4 the AM_PATH_SDL function looks for sdl-config. It sets the PATH: PATH="$prefix/bin:$prefix/usr/bin:$PATH" but does not save the current PATH or restore the current PATH at the end. This breaks the build on Solaris because we have GNU tools in another dir (listed at the top of PATH) but non-GNU tools with the same names in $prefix/bin. Later configure tests finds the non-GNU tools and quits in error
author Sam Lantinga <slouken@libsdl.org>
date Thu, 24 Jan 2008 15:50:20 +0000
parents 290b5baf2fca
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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 /* Win32 thread management routines for SDL */
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25
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26 #define WIN32_LEAN_AND_MEAN
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27 #include <windows.h>
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28
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29 #include "SDL_thread.h"
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30 #include "../SDL_thread_c.h"
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31 #include "../SDL_systhread.h"
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32
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33 #ifndef SDL_PASSED_BEGINTHREAD_ENDTHREAD
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34 #ifndef _WIN32_WCE
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35 /* We'll use the C library from this DLL */
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36 #include <process.h>
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37 #endif
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38
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39 #if __GNUC__
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40 typedef unsigned long (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned,
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41 unsigned (__stdcall *func)(void *), void *arg,
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42 unsigned, unsigned *threadID);
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43 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code);
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44 #elif defined(__WATCOMC__)
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45 /* This is for Watcom targets except OS2 */
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46 #if __WATCOMC__ < 1240
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47 #define __watcall
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48 #endif
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49 typedef unsigned long (__watcall *pfnSDL_CurrentBeginThread) (void *, unsigned,
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50 unsigned (__stdcall *func)(void *), void *arg,
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51 unsigned, unsigned *threadID);
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52 typedef void (__watcall *pfnSDL_CurrentEndThread)(unsigned code);
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53 #else
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54 typedef uintptr_t (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned,
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55 unsigned (__stdcall *func)(void *), void *arg,
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56 unsigned, unsigned *threadID);
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57 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code);
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58 #endif
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59 #endif /* !SDL_PASSED_BEGINTHREAD_ENDTHREAD */
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60
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61
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62 typedef struct ThreadStartParms
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63 {
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64 void *args;
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65 pfnSDL_CurrentEndThread pfnCurrentEndThread;
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66 } tThreadStartParms, *pThreadStartParms;
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67
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68 static unsigned __stdcall RunThread(void *data)
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69 {
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70 pThreadStartParms pThreadParms = (pThreadStartParms)data;
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71 pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL;
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72
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73 // Call the thread function!
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74 SDL_RunThread(pThreadParms->args);
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75
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76 // Get the current endthread we have to use!
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77 if (pThreadParms)
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78 {
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79 pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread;
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80 SDL_free(pThreadParms);
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81 }
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82 // Call endthread!
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83 if (pfnCurrentEndThread)
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84 (*pfnCurrentEndThread)(0);
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85 return(0);
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86 }
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87
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88 #ifdef SDL_PASSED_BEGINTHREAD_ENDTHREAD
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89 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread)
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90 {
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91 #else
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92 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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93 {
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94 #ifdef _WIN32_WCE
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95 pfnSDL_CurrentBeginThread pfnBeginThread = NULL;
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96 pfnSDL_CurrentEndThread pfnEndThread = NULL;
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97 #else
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98 pfnSDL_CurrentBeginThread pfnBeginThread = _beginthreadex;
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99 pfnSDL_CurrentEndThread pfnEndThread = _endthreadex;
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100 #endif
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101 #endif /* SDL_PASSED_BEGINTHREAD_ENDTHREAD */
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102 unsigned threadid;
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103 pThreadStartParms pThreadParms = (pThreadStartParms)SDL_malloc(sizeof(tThreadStartParms));
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104 if (!pThreadParms) {
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105 SDL_OutOfMemory();
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106 return(-1);
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107 }
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108
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109 // Save the function which we will have to call to clear the RTL of calling app!
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110 pThreadParms->pfnCurrentEndThread = pfnEndThread;
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111 // Also save the real parameters we have to pass to thread function
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112 pThreadParms->args = args;
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113
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114 if (pfnBeginThread) {
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115 thread->handle = (SYS_ThreadHandle) pfnBeginThread(NULL, 0, RunThread,
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116 pThreadParms, 0, &threadid);
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117 } else {
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118 thread->handle = CreateThread(NULL, 0, RunThread, pThreadParms, 0, &threadid);
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119 }
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120 if (thread->handle == NULL) {
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121 SDL_SetError("Not enough resources to create thread");
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122 return(-1);
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123 }
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124 return(0);
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125 }
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126
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127 void SDL_SYS_SetupThread(void)
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128 {
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129 return;
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130 }
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131
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132 Uint32 SDL_ThreadID(void)
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133 {
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134 return((Uint32)GetCurrentThreadId());
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135 }
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136
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137 void SDL_SYS_WaitThread(SDL_Thread *thread)
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138 {
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139 WaitForSingleObject(thread->handle, INFINITE);
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140 CloseHandle(thread->handle);
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141 }
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142
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143 /* WARNING: This function is really a last resort.
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144 * Threads should be signaled and then exit by themselves.
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145 * TerminateThread() doesn't perform stack and DLL cleanup.
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146 */
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147 void SDL_SYS_KillThread(SDL_Thread *thread)
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148 {
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149 TerminateThread(thread->handle, FALSE);
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150 }