e14743d1 |
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 | } |