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annotate include/SDL_thread.h @ 3957:b1d5b56aa549 SDL-1.2

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Date: Mon, 4 Jun 2007 06:17:59 +0000 (UTC) From: George Gensure <werkt0@gmail.com> Subject: [SDL] error removal patch for SDL_x11dyn.c I found that calling SDL_GetError when an error hasn't necessarily occurred is still reporting problems from loadso regarding dynamic functions in X11. I've added the following to my local copy to avoid revealing the 'many library lookup' approach adopted by x11dyn.c:
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 13 Jun 2007 07:54:10 +0000
parents d5d3a6fe05a1
children c121d94672cb e85e65aec22f
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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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
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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.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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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
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifndef _SDL_thread_h
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24 #define _SDL_thread_h
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25
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26 /* Header for the SDL thread management routines
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27
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28 These are independent of the other SDL routines.
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29 */
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30
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31 #include "SDL_stdinc.h"
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32 #include "SDL_error.h"
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33
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34 /* Thread synchronization primitives */
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35 #include "SDL_mutex.h"
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36
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37 #include "begin_code.h"
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38 /* Set up for C function definitions, even when using C++ */
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39 #ifdef __cplusplus
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40 extern "C" {
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41 #endif
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42
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43 /* The SDL thread structure, defined in SDL_thread.c */
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44 struct SDL_Thread;
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45 typedef struct SDL_Thread SDL_Thread;
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46
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47 /* Create a thread */
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48 #if (defined(__WIN32__) && !defined(HAVE_LIBC)) || defined(__OS2__)
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49 /*
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50 We compile SDL into a DLL on OS/2. This means, that it's the DLL which
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51 creates a new thread for the calling process with the SDL_CreateThread()
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52 API. There is a problem with this, that only the RTL of the SDL.DLL will
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53 be initialized for those threads, and not the RTL of the calling application!
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54 To solve this, we make a little hack here.
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55 We'll always use the caller's _beginthread() and _endthread() APIs to
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56 start a new thread. This way, if it's the SDL.DLL which uses this API,
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57 then the RTL of SDL.DLL will be used to create the new thread, and if it's
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58 the application, then the RTL of the application will be used.
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59 So, in short:
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60 Always use the _beginthread() and _endthread() of the calling runtime library!
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61 */
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62 #define SDL_PASSED_BEGINTHREAD_ENDTHREAD
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63 #ifndef _WIN32_WCE
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64 #include <process.h> /* This has _beginthread() and _endthread() defined! */
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65 #endif
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66
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67 #ifdef __OS2__
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68 typedef int (*pfnSDL_CurrentBeginThread)(void (*func)(void *), void *, unsigned, void *arg);
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69 typedef void (*pfnSDL_CurrentEndThread)(void);
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70 #elif __GNUC__
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71 typedef unsigned long (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned,
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72 unsigned (__stdcall *func)(void *), void *arg,
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73 unsigned, unsigned *threadID);
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74 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code);
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75 #else
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76 typedef uintptr_t (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned,
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77 unsigned (__stdcall *func)(void *), void *arg,
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78 unsigned, unsigned *threadID);
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79 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code);
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80 #endif
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81
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82 extern DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(int (SDLCALL *fn)(void *), void *data, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread);
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83
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84 #ifdef __OS2__
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85 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthread, _endthread)
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86 #elif defined(_WIN32_WCE)
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87 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, NULL, NULL)
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88 #else
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89 #define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthreadex, _endthreadex)
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90 #endif
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91 #else
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92 extern DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(int (SDLCALL *fn)(void *), void *data);
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93 #endif
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94
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95 /* Get the 32-bit thread identifier for the current thread */
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96 extern DECLSPEC Uint32 SDLCALL SDL_ThreadID(void);
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97
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98 /* Get the 32-bit thread identifier for the specified thread,
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99 equivalent to SDL_ThreadID() if the specified thread is NULL.
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100 */
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101 extern DECLSPEC Uint32 SDLCALL SDL_GetThreadID(SDL_Thread *thread);
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102
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103 /* Wait for a thread to finish.
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104 The return code for the thread function is placed in the area
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105 pointed to by 'status', if 'status' is not NULL.
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106 */
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107 extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread *thread, int *status);
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108
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109 /* Forcefully kill a thread without worrying about its state */
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110 extern DECLSPEC void SDLCALL SDL_KillThread(SDL_Thread *thread);
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111
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112
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113 /* Ends C function definitions when using C++ */
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114 #ifdef __cplusplus
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115 }
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116 #endif
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117 #include "close_code.h"
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118
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119 #endif /* _SDL_thread_h */