| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 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 |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | /* OS/2 thread management routines for SDL */ |
| 25 | |
| 26 | #include <process.h> |
| 27 | #define INCL_DOSERRORS |
| 28 | #define INCL_DOSPROCESS |
| 29 | #include <os2.h> |
| 30 | |
| 31 | #include "SDL_thread.h" |
| 32 | #include "../SDL_systhread.h" |
| 33 | #include "../SDL_thread_c.h" |
| 34 | |
| 35 | typedef struct ThreadStartParms |
| 36 | { |
| 37 | void *args; |
| 38 | pfnSDL_CurrentEndThread pfnCurrentEndThread; |
| 39 | } tThreadStartParms, *pThreadStartParms; |
| 40 | |
| 41 | static void threadfunc(void *pparm) |
| 42 | { |
| 43 | pThreadStartParms pThreadParms = pparm; |
| 44 | pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL; |
| 45 | |
| 46 | // Call the thread function! |
| 47 | SDL_RunThread(pThreadParms->args); |
| 48 | |
| 49 | // Get the current endthread we have to use! |
| 50 | if (pThreadParms) |
| 51 | { |
| 52 | pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread; |
| 53 | SDL_free(pThreadParms); |
| 54 | } |
| 55 | // Call endthread! |
| 56 | if (pfnCurrentEndThread) |
| 57 | (*pfnCurrentEndThread)(); |
| 58 | } |
| 59 | |
| 60 | int SDL_SYS_CreateThread(SDL_Thread *thread, void *args, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread) |
| 61 | { |
| 62 | pThreadStartParms pThreadParms = SDL_malloc(sizeof(tThreadStartParms)); |
| 63 | if (!pThreadParms) |
| 64 | { |
| 65 | SDL_SetError("Not enough memory to create thread"); |
| 66 | return(-1); |
| 67 | } |
| 68 | |
| 69 | // Save the function which we will have to call to clear the RTL of calling app! |
| 70 | pThreadParms->pfnCurrentEndThread = pfnEndThread; |
| 71 | // Also save the real parameters we have to pass to thread function |
| 72 | pThreadParms->args = args; |
| 73 | // Start the thread using the runtime library of calling app! |
| 74 | thread->threadid = thread->handle = (*pfnBeginThread)(threadfunc, NULL, 512*1024, pThreadParms); |
| 75 | if ((int)thread->threadid <= 0) |
| 76 | { |
| 77 | SDL_SetError("Not enough resources to create thread"); |
| 78 | return(-1); |
| 79 | } |
| 80 | return(0); |
| 81 | } |
| 82 | |
| 83 | void SDL_SYS_SetupThread(void) |
| 84 | { |
| 85 | return; |
| 86 | } |
| 87 | |
| 88 | DECLSPEC Uint32 SDLCALL SDL_ThreadID(void) |
| 89 | { |
| 90 | PTIB tib; |
| 91 | DosGetInfoBlocks(&tib, NULL); |
| 92 | return((Uint32) (tib->tib_ptib2->tib2_ultid)); |
| 93 | } |
| 94 | |
| 95 | void SDL_SYS_WaitThread(SDL_Thread *thread) |
| 96 | { |
| 97 | TID tid = thread->handle; |
| 98 | DosWaitThread(&tid, DCWW_WAIT); |
| 99 | } |
| 100 | |
| 101 | /* WARNING: This function is really a last resort. |
| 102 | * Threads should be signaled and then exit by themselves. |
| 103 | * TerminateThread() doesn't perform stack and DLL cleanup. |
| 104 | */ |
| 105 | void SDL_SYS_KillThread(SDL_Thread *thread) |
| 106 | { |
| 107 | DosKillThread(thread->handle); |
| 108 | } |