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annotate src/thread/os2/SDL_systhread.c @ 2266:e61ad15a205f

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More work in progress integrating SDL_Surface and the new SDL_Texture API
author Sam Lantinga <slouken@libsdl.org>
date Sat, 18 Aug 2007 01:44:21 +0000
parents c121d94672cb
children 4436464c4f51
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 /* OS/2 thread management routines for SDL */
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25
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26 #include <process.h>
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27 #define INCL_DOSERRORS
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28 #define INCL_DOSPROCESS
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29 #include <os2.h>
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30
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31 #include "SDL_thread.h"
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32 #include "../SDL_systhread.h"
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33 #include "../SDL_thread_c.h"
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34
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35 typedef struct ThreadStartParms
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36 {
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37 void *args;
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38 pfnSDL_CurrentEndThread pfnCurrentEndThread;
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39 } tThreadStartParms, *pThreadStartParms;
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40
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41 static void
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42 threadfunc(void *pparm)
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43 {
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44 pThreadStartParms pThreadParms = pparm;
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45 pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL;
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46
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47 // Call the thread function!
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48 SDL_RunThread(pThreadParms->args);
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49
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50 // Get the current endthread we have to use!
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51 if (pThreadParms) {
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52 pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread;
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53 SDL_free(pThreadParms);
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54 }
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55 // Call endthread!
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56 if (pfnCurrentEndThread)
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57 (*pfnCurrentEndThread) ();
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58 }
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59
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60 int
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61 SDL_SYS_CreateThread(SDL_Thread * thread, void *args,
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62 pfnSDL_CurrentBeginThread pfnBeginThread,
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63 pfnSDL_CurrentEndThread pfnEndThread)
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64 {
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65 pThreadStartParms pThreadParms = SDL_malloc(sizeof(tThreadStartParms));
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66 if (!pThreadParms) {
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67 SDL_SetError("Not enough memory to create thread");
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68 return (-1);
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69 }
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70 // Save the function which we will have to call to clear the RTL of calling app!
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71 pThreadParms->pfnCurrentEndThread = pfnEndThread;
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72 // Also save the real parameters we have to pass to thread function
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73 pThreadParms->args = args;
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74 // Start the thread using the runtime library of calling app!
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75 thread->threadid = thread->handle =
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76 (*pfnBeginThread) (threadfunc, NULL, 512 * 1024, pThreadParms);
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77 if ((int) thread->threadid <= 0) {
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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
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85 SDL_SYS_SetupThread(void)
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86 {
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87 return;
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88 }
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89
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90 DECLSPEC Uint32 SDLCALL
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91 SDL_ThreadID(void)
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92 {
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93 PTIB tib;
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94 DosGetInfoBlocks(&tib, NULL);
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95 return ((Uint32) (tib->tib_ptib2->tib2_ultid));
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96 }
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97
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98 void
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99 SDL_SYS_WaitThread(SDL_Thread * thread)
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100 {
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101 TID tid = thread->handle;
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102 DosWaitThread(&tid, DCWW_WAIT);
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103 }
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104
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105 /* WARNING: This function is really a last resort.
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106 * Threads should be signaled and then exit by themselves.
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107 * TerminateThread() doesn't perform stack and DLL cleanup.
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108 */
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109 void
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110 SDL_SYS_KillThread(SDL_Thread * thread)
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111 {
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112 DosKillThread(thread->handle);
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113 }
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114
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115 /* vi: set ts=4 sw=4 expandtab: */