annotate src/thread/os2/SDL_systhread.c @ 1358:c71e05b4dc2e

More header massaging... works great on Windows. ;-)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 10 Feb 2006 06:48:43 +0000
parents 604d73db6802
children 19418e4422cb
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 /* OS/2 thread management routines for SDL */
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24
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25 #include <process.h>
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26 #define INCL_DOSERRORS
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27 #define INCL_DOSPROCESS
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28 #include <os2.h>
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29
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30 #include "SDL_thread.h"
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31 #include "SDL_systhread.h"
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32
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33 typedef struct ThreadStartParms
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34 {
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35 void *args;
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36 pfnSDL_CurrentEndThread pfnCurrentEndThread;
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37 } tThreadStartParms, *pThreadStartParms;
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38
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39 static void threadfunc(void *pparm)
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40 {
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41 pThreadStartParms pThreadParms = pparm;
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42 pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL;
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43
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44 // Call the thread function!
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45 SDL_RunThread(pThreadParms->args);
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46
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47 // Get the current endthread we have to use!
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48 if (pThreadParms)
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49 {
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50 pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread;
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51 SDL_free(pThreadParms);
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52 }
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53 // Call endthread!
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54 if (pfnCurrentEndThread)
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55 (*pfnCurrentEndThread)();
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56 }
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57
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58 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread)
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59 {
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60 pThreadStartParms pThreadParms = SDL_malloc(sizeof(tThreadStartParms));
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61 if (!pThreadParms)
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62 {
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63 SDL_SetError("Not enough memory to create thread");
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64 return(-1);
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65 }
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66
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67 // Save the function which we will have to call to clear the RTL of calling app!
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68 pThreadParms->pfnCurrentEndThread = pfnEndThread;
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69 // Also save the real parameters we have to pass to thread function
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70 pThreadParms->args = args;
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71 // Start the thread using the runtime library of calling app!
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72 thread->threadid = thread->handle = (*pfnBeginThread)(threadfunc, NULL, 512*1024, pThreadParms);
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73 if (thread->threadid<=0)
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74 {
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75 SDL_SetError("Not enough resources to create thread");
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76 return(-1);
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77 }
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78 return(0);
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79 }
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80
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81 void SDL_SYS_SetupThread(void)
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82 {
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83 return;
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84 }
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85
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86 DECLSPEC Uint32 SDLCALL SDL_ThreadID(void)
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87 {
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88 PTIB tib;
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89 DosGetInfoBlocks(&tib, NULL);
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90 return((Uint32) (tib->tib_ptib2->tib2_ultid));
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91 }
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92
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93 void SDL_SYS_WaitThread(SDL_Thread *thread)
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94 {
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95 TID tid = thread->handle;
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96 DosWaitThread(&tid, DCWW_WAIT);
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97 }
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98
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99 /* WARNING: This function is really a last resort.
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100 * Threads should be signaled and then exit by themselves.
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101 * TerminateThread() doesn't perform stack and DLL cleanup.
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102 */
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103 void SDL_SYS_KillThread(SDL_Thread *thread)
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104 {
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105 DosKillThread(thread->handle);
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106 }