Mercurial > sdl-ios-xcode
annotate include/SDL_thread.h @ 5107:99acf3d856cb SDL-1.2
Colin Leroy 2011-01-26 04:24:20 PST
the pthread implementation of SDL_SemWaitTimeout() uses busy waiting, while
pthread's sem_timedwait() does work. Attached are patches that make use of it
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 27 Jan 2011 00:33:26 -0800 |
| parents | 4c4113c2162c |
| children |
| rev | line source |
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| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 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 | |
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifndef _SDL_thread_h | |
| 24 #define _SDL_thread_h | |
| 25 | |
| 4217 | 26 /** @file SDL_thread.h |
| 27 * Header for the SDL thread management routines | |
| 28 * | |
| 29 * @note These are independent of the other SDL routines. | |
| 30 */ | |
| 0 | 31 |
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32 #include "SDL_stdinc.h" |
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More header massaging... works great on Windows. ;-)
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33 #include "SDL_error.h" |
| 0 | 34 |
| 35 /* Thread synchronization primitives */ | |
| 36 #include "SDL_mutex.h" | |
| 37 | |
| 38 #include "begin_code.h" | |
| 39 /* Set up for C function definitions, even when using C++ */ | |
| 40 #ifdef __cplusplus | |
| 41 extern "C" { | |
| 42 #endif | |
| 43 | |
| 4217 | 44 /** The SDL thread structure, defined in SDL_thread.c */ |
| 0 | 45 struct SDL_Thread; |
| 46 typedef struct SDL_Thread SDL_Thread; | |
| 47 | |
| 4217 | 48 /** Create a thread */ |
| 3975 | 49 #if ((defined(__WIN32__) && !defined(HAVE_LIBC)) || defined(__OS2__)) && !defined(__SYMBIAN32__) |
| 4217 | 50 /** |
| 51 * We compile SDL into a DLL on OS/2. This means, that it's the DLL which | |
| 52 * creates a new thread for the calling process with the SDL_CreateThread() | |
| 53 * API. There is a problem with this, that only the RTL of the SDL.DLL will | |
| 54 * be initialized for those threads, and not the RTL of the calling application! | |
| 55 * To solve this, we make a little hack here. | |
| 56 * We'll always use the caller's _beginthread() and _endthread() APIs to | |
| 57 * start a new thread. This way, if it's the SDL.DLL which uses this API, | |
| 58 * then the RTL of SDL.DLL will be used to create the new thread, and if it's | |
| 59 * the application, then the RTL of the application will be used. | |
| 60 * So, in short: | |
| 61 * Always use the _beginthread() and _endthread() of the calling runtime library! | |
| 62 */ | |
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63 #define SDL_PASSED_BEGINTHREAD_ENDTHREAD |
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Updated WinCE support by Dmitry (with some tweaks)
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64 #ifndef _WIN32_WCE |
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65 #include <process.h> /* This has _beginthread() and _endthread() defined! */ |
| 1190 | 66 #endif |
| 67 | |
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68 #ifdef __OS2__ |
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Updated OS/2 build, yay!
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69 typedef int (*pfnSDL_CurrentBeginThread)(void (*func)(void *), void *, unsigned, void *arg); |
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70 typedef void (*pfnSDL_CurrentEndThread)(void); |
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71 #elif __GNUC__ |
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72 typedef unsigned long (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned, |
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73 unsigned (__stdcall *func)(void *), void *arg, |
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74 unsigned, unsigned *threadID); |
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75 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code); |
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76 #else |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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77 typedef uintptr_t (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned, |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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78 unsigned (__stdcall *func)(void *), void *arg, |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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79 unsigned, unsigned *threadID); |
|
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
diff
changeset
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80 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code); |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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81 #endif |
| 1190 | 82 |
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Fixed thread callback calling conventions, updated OS/2 DLL name to SDL12.dll
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83 extern DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(int (SDLCALL *fn)(void *), void *data, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread); |
| 1190 | 84 |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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changeset
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85 #ifdef __OS2__ |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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86 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthread, _endthread) |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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87 #elif defined(_WIN32_WCE) |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
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88 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, NULL, NULL) |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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89 #else |
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It's now possible to build SDL without any C runtime at all on Windows,
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90 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthreadex, _endthreadex) |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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91 #endif |
| 1190 | 92 #else |
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Date: Fri, 20 Aug 2004 08:31:20 +0200
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93 extern DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(int (SDLCALL *fn)(void *), void *data); |
| 1190 | 94 #endif |
| 0 | 95 |
| 4217 | 96 /** Get the 32-bit thread identifier for the current thread */ |
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97 extern DECLSPEC Uint32 SDLCALL SDL_ThreadID(void); |
| 0 | 98 |
| 4217 | 99 /** Get the 32-bit thread identifier for the specified thread, |
| 100 * equivalent to SDL_ThreadID() if the specified thread is NULL. | |
| 0 | 101 */ |
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102 extern DECLSPEC Uint32 SDLCALL SDL_GetThreadID(SDL_Thread *thread); |
| 0 | 103 |
| 4217 | 104 /** Wait for a thread to finish. |
| 105 * The return code for the thread function is placed in the area | |
| 106 * pointed to by 'status', if 'status' is not NULL. | |
| 0 | 107 */ |
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108 extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread *thread, int *status); |
| 0 | 109 |
| 4217 | 110 /** Forcefully kill a thread without worrying about its state */ |
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111 extern DECLSPEC void SDLCALL SDL_KillThread(SDL_Thread *thread); |
| 0 | 112 |
| 113 | |
| 114 /* Ends C function definitions when using C++ */ | |
| 115 #ifdef __cplusplus | |
| 116 } | |
| 117 #endif | |
| 118 #include "close_code.h" | |
| 119 | |
| 120 #endif /* _SDL_thread_h */ |