| 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 | /* Win32 thread management routines for SDL */ |
| 25 | |
| 26 | #define WIN32_LEAN_AND_MEAN |
| 27 | #include <windows.h> |
| 28 | |
| 29 | #include "SDL_thread.h" |
| 30 | #include "../SDL_thread_c.h" |
| 31 | #include "../SDL_systhread.h" |
| 32 | |
| 33 | #ifndef SDL_PASSED_BEGINTHREAD_ENDTHREAD |
| 34 | #ifndef _WIN32_WCE |
| 35 | /* We'll use the C library from this DLL */ |
| 36 | #include <process.h> |
| 37 | #endif |
| 38 | |
| 39 | #if __GNUC__ |
| 40 | typedef unsigned long (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned, |
| 41 | unsigned (__stdcall *func)(void *), void *arg, |
| 42 | unsigned, unsigned *threadID); |
| 43 | typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code); |
| 44 | #elif defined(__WATCOMC__) |
| 45 | /* This is for Watcom targets except OS2 */ |
| 46 | #if __WATCOMC__ < 1240 |
| 47 | #define __watcall |
| 48 | #endif |
| 49 | typedef unsigned long (__watcall *pfnSDL_CurrentBeginThread) (void *, unsigned, |
| 50 | unsigned (__stdcall *func)(void *), void *arg, |
| 51 | unsigned, unsigned *threadID); |
| 52 | typedef void (__watcall *pfnSDL_CurrentEndThread)(unsigned code); |
| 53 | #else |
| 54 | typedef uintptr_t (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned, |
| 55 | unsigned (__stdcall *func)(void *), void *arg, |
| 56 | unsigned, unsigned *threadID); |
| 57 | typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code); |
| 58 | #endif |
| 59 | #endif /* !SDL_PASSED_BEGINTHREAD_ENDTHREAD */ |
| 60 | |
| 61 | |
| 62 | typedef struct ThreadStartParms |
| 63 | { |
| 64 | void *args; |
| 65 | pfnSDL_CurrentEndThread pfnCurrentEndThread; |
| 66 | } tThreadStartParms, *pThreadStartParms; |
| 67 | |
| 68 | static unsigned __stdcall RunThread(void *data) |
| 69 | { |
| 70 | pThreadStartParms pThreadParms = (pThreadStartParms)data; |
| 71 | pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL; |
| 72 | |
| 73 | // Call the thread function! |
| 74 | SDL_RunThread(pThreadParms->args); |
| 75 | |
| 76 | // Get the current endthread we have to use! |
| 77 | if (pThreadParms) |
| 78 | { |
| 79 | pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread; |
| 80 | SDL_free(pThreadParms); |
| 81 | } |
| 82 | // Call endthread! |
| 83 | if (pfnCurrentEndThread) |
| 84 | (*pfnCurrentEndThread)(0); |
| 85 | return(0); |
| 86 | } |
| 87 | |
| 88 | #ifdef SDL_PASSED_BEGINTHREAD_ENDTHREAD |
| 89 | int SDL_SYS_CreateThread(SDL_Thread *thread, void *args, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread) |
| 90 | { |
| 91 | #else |
| 92 | int SDL_SYS_CreateThread(SDL_Thread *thread, void *args) |
| 93 | { |
| 94 | #ifdef _WIN32_WCE |
| 95 | pfnSDL_CurrentBeginThread pfnBeginThread = NULL; |
| 96 | pfnSDL_CurrentEndThread pfnEndThread = NULL; |
| 97 | #else |
| 98 | pfnSDL_CurrentBeginThread pfnBeginThread = _beginthreadex; |
| 99 | pfnSDL_CurrentEndThread pfnEndThread = _endthreadex; |
| 100 | #endif |
| 101 | #endif /* SDL_PASSED_BEGINTHREAD_ENDTHREAD */ |
| 102 | unsigned threadid; |
| 103 | pThreadStartParms pThreadParms = (pThreadStartParms)SDL_malloc(sizeof(tThreadStartParms)); |
| 104 | if (!pThreadParms) { |
| 105 | SDL_OutOfMemory(); |
| 106 | return(-1); |
| 107 | } |
| 108 | |
| 109 | // Save the function which we will have to call to clear the RTL of calling app! |
| 110 | pThreadParms->pfnCurrentEndThread = pfnEndThread; |
| 111 | // Also save the real parameters we have to pass to thread function |
| 112 | pThreadParms->args = args; |
| 113 | |
| 114 | if (pfnBeginThread) { |
| 115 | thread->handle = (SYS_ThreadHandle) pfnBeginThread(NULL, 0, RunThread, |
| 116 | pThreadParms, 0, &threadid); |
| 117 | } else { |
| 118 | thread->handle = CreateThread(NULL, 0, RunThread, pThreadParms, 0, &threadid); |
| 119 | } |
| 120 | if (thread->handle == NULL) { |
| 121 | SDL_SetError("Not enough resources to create thread"); |
| 122 | return(-1); |
| 123 | } |
| 124 | return(0); |
| 125 | } |
| 126 | |
| 127 | void SDL_SYS_SetupThread(void) |
| 128 | { |
| 129 | return; |
| 130 | } |
| 131 | |
| 132 | Uint32 SDL_ThreadID(void) |
| 133 | { |
| 134 | return((Uint32)GetCurrentThreadId()); |
| 135 | } |
| 136 | |
| 137 | void SDL_SYS_WaitThread(SDL_Thread *thread) |
| 138 | { |
| 139 | WaitForSingleObject(thread->handle, INFINITE); |
| 140 | CloseHandle(thread->handle); |
| 141 | } |
| 142 | |
| 143 | /* WARNING: This function is really a last resort. |
| 144 | * Threads should be signaled and then exit by themselves. |
| 145 | * TerminateThread() doesn't perform stack and DLL cleanup. |
| 146 | */ |
| 147 | void SDL_SYS_KillThread(SDL_Thread *thread) |
| 148 | { |
| 149 | TerminateThread(thread->handle, FALSE); |
| 150 | } |