Mercurial > sdl-ios-xcode
annotate include/SDL_thread.h @ 3846:66fb40445587 SDL-ryan-multiple-audio-device
Removed distinction between "available" and "init" in audio backends, since
both had to be checked for success as a pair at the higher level and several
of the Available methods were just always-succeed placeholders anyhow. Now
the availability check is done in the init code, and the higher level tries
all possible drivers until one manages to initialize successfully.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 17 Oct 2006 09:09:21 +0000 |
| parents | be9bd1067c6c |
| children | 866052b01ee5 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 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 | |
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26 /** |
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27 * \file SDL_thread.h |
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28 * |
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29 * Header for the SDL thread management routines |
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30 */ |
| 0 | 31 |
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32 #include "SDL_stdinc.h" |
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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 | |
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41 /* *INDENT-OFF* */ |
| 0 | 42 extern "C" { |
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43 /* *INDENT-ON* */ |
| 0 | 44 #endif |
| 45 | |
| 46 /* The SDL thread structure, defined in SDL_thread.c */ | |
| 47 struct SDL_Thread; | |
| 48 typedef struct SDL_Thread SDL_Thread; | |
| 49 | |
| 50 /* Create a thread */ | |
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51 #if (defined(__WIN32__) && !defined(HAVE_LIBC)) || defined(__OS2__) |
| 1190 | 52 /* |
| 53 We compile SDL into a DLL on OS/2. This means, that it's the DLL which | |
| 54 creates a new thread for the calling process with the SDL_CreateThread() | |
| 55 API. There is a problem with this, that only the RTL of the SDL.DLL will | |
| 56 be initialized for those threads, and not the RTL of the calling application! | |
| 57 To solve this, we make a little hack here. | |
| 58 We'll always use the caller's _beginthread() and _endthread() APIs to | |
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59 start a new thread. This way, if it's the SDL.DLL which uses this API, |
| 1190 | 60 then the RTL of SDL.DLL will be used to create the new thread, and if it's |
| 61 the application, then the RTL of the application will be used. | |
| 62 So, in short: | |
| 63 Always use the _beginthread() and _endthread() of the calling runtime library! | |
| 64 */ | |
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65 #define SDL_PASSED_BEGINTHREAD_ENDTHREAD |
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66 #ifndef _WIN32_WCE |
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67 #include <process.h> /* This has _beginthread() and _endthread() defined! */ |
| 1190 | 68 #endif |
| 69 | |
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70 #ifdef __OS2__ |
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71 typedef int (*pfnSDL_CurrentBeginThread) (void (*func) (void *), void *, |
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72 unsigned, void *arg); |
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73 typedef void (*pfnSDL_CurrentEndThread) (void); |
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74 #elif __GNUC__ |
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75 typedef unsigned long (__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned, |
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76 unsigned |
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77 (__stdcall * |
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78 func) (void *), |
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79 void *arg, |
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80 unsigned, |
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81 unsigned |
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82 *threadID); |
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83 typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code); |
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84 #else |
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85 typedef uintptr_t(__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned, |
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86 unsigned (__stdcall * |
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87 func) (void |
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88 *), |
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89 void *arg, unsigned, |
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90 unsigned *threadID); |
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91 typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code); |
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92 #endif |
| 1190 | 93 |
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94 extern DECLSPEC SDL_Thread *SDLCALL SDL_CreateThread(int (SDLCALL * f) (void *), |
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95 void *data, |
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96 pfnSDL_CurrentBeginThread |
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97 pfnBeginThread, |
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98 pfnSDL_CurrentEndThread |
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99 pfnEndThread); |
| 1190 | 100 |
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101 #ifdef __OS2__ |
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102 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthread, _endthread) |
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103 #elif defined(_WIN32_WCE) |
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104 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, NULL, NULL) |
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105 #else |
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106 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthreadex, _endthreadex) |
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107 #endif |
| 1190 | 108 #else |
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109 extern DECLSPEC SDL_Thread *SDLCALL |
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110 SDL_CreateThread(int (SDLCALL * fn) (void *), void *data); |
| 1190 | 111 #endif |
| 0 | 112 |
| 113 /* Get the 32-bit thread identifier for the current thread */ | |
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114 extern DECLSPEC Uint32 SDLCALL SDL_ThreadID(void); |
| 0 | 115 |
| 116 /* Get the 32-bit thread identifier for the specified thread, | |
| 117 equivalent to SDL_ThreadID() if the specified thread is NULL. | |
| 118 */ | |
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119 extern DECLSPEC Uint32 SDLCALL SDL_GetThreadID(SDL_Thread * thread); |
| 0 | 120 |
| 121 /* Wait for a thread to finish. | |
| 122 The return code for the thread function is placed in the area | |
| 123 pointed to by 'status', if 'status' is not NULL. | |
| 124 */ | |
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125 extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread * thread, int *status); |
| 0 | 126 |
| 127 /* Forcefully kill a thread without worrying about its state */ | |
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128 extern DECLSPEC void SDLCALL SDL_KillThread(SDL_Thread * thread); |
| 0 | 129 |
| 130 | |
| 131 /* Ends C function definitions when using C++ */ | |
| 132 #ifdef __cplusplus | |
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133 /* *INDENT-OFF* */ |
| 0 | 134 } |
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135 /* *INDENT-ON* */ |
| 0 | 136 #endif |
| 137 #include "close_code.h" | |
| 138 | |
| 139 #endif /* _SDL_thread_h */ | |
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140 |
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141 /* vi: set ts=4 sw=4 expandtab: */ |