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annotate src/thread/win32/SDL_systhread.c @ 1373:04499d3e1b6b

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author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Feb 2006 16:42:18 +0000
parents 19418e4422cb
children d910939febfa
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
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23 /* Win32 thread management routines for SDL */
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24
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25 #include "SDL_windows.h"
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26
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27 #include "SDL_thread.h"
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28 #include "../SDL_thread_c.h"
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29 #include "../SDL_systhread.h"
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30
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31 typedef struct ThreadStartParms
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32 {
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33 void *args;
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34 pfnSDL_CurrentEndThread pfnCurrentEndThread;
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35 } tThreadStartParms, *pThreadStartParms;
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36
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37 static unsigned __stdcall RunThread(void *data)
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38 {
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39 pThreadStartParms pThreadParms = (pThreadStartParms)data;
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40 pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL;
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41
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42 // Call the thread function!
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43 SDL_RunThread(pThreadParms->args);
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44
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45 // Get the current endthread we have to use!
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46 if (pThreadParms)
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47 {
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48 pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread;
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49 SDL_free(pThreadParms);
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50 }
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51 // Call endthread!
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52 if (pfnCurrentEndThread)
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53 (*pfnCurrentEndThread)(0);
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54 return(0);
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55 }
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56
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57 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread)
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58 {
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59 unsigned threadid;
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60 pThreadStartParms pThreadParms = (pThreadStartParms)SDL_malloc(sizeof(tThreadStartParms));
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61 if (!pThreadParms) {
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62 SDL_OutOfMemory();
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63 return(-1);
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64 }
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65
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66 // Save the function which we will have to call to clear the RTL of calling app!
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67 pThreadParms->pfnCurrentEndThread = pfnEndThread;
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68 // Also save the real parameters we have to pass to thread function
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69 pThreadParms->args = args;
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70
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71 if (pfnBeginThread) {
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72 thread->handle = (SYS_ThreadHandle) pfnBeginThread(NULL, 0, RunThread,
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73 pThreadParms, 0, &threadid);
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74 } else {
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75 thread->handle = CreateThread(NULL, 0, RunThread, pThreadParms, 0, &threadid);
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76 }
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77 if (thread->handle == NULL) {
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78 SDL_SetError("Not enough resources to create thread");
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79 return(-1);
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80 }
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81 return(0);
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82 }
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83
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84 void SDL_SYS_SetupThread(void)
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85 {
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86 return;
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87 }
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88
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89 Uint32 SDL_ThreadID(void)
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90 {
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91 return((Uint32)GetCurrentThreadId());
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92 }
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93
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94 void SDL_SYS_WaitThread(SDL_Thread *thread)
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95 {
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96 WaitForSingleObject(thread->handle, INFINITE);
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97 CloseHandle(thread->handle);
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98 }
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99
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100 /* WARNING: This function is really a last resort.
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101 * Threads should be signaled and then exit by themselves.
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102 * TerminateThread() doesn't perform stack and DLL cleanup.
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103 */
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104 void SDL_SYS_KillThread(SDL_Thread *thread)
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105 {
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106 TerminateThread(thread->handle, FALSE);
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107 }