/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2012 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org*/#ifndef _SDL_thread_h#define _SDL_thread_h/** @file SDL_thread.h * Header for the SDL thread management routines * * @note These are independent of the other SDL routines. */#include "SDL_stdinc.h"#include "SDL_error.h"/* Thread synchronization primitives */#include "SDL_mutex.h"#include "begin_code.h"/* Set up for C function definitions, even when using C++ */#ifdef __cplusplusextern "C" {#endif/** The SDL thread structure, defined in SDL_thread.c */struct SDL_Thread;typedef struct SDL_Thread SDL_Thread;/** Create a thread */#if ((defined(__WIN32__) && !defined(HAVE_LIBC)) || defined(__OS2__)) && !defined(__SYMBIAN32__)/** * We compile SDL into a DLL on OS/2. This means, that it's the DLL which * creates a new thread for the calling process with the SDL_CreateThread() * API. There is a problem with this, that only the RTL of the SDL.DLL will * be initialized for those threads, and not the RTL of the calling application! * To solve this, we make a little hack here. * We'll always use the caller's _beginthread() and _endthread() APIs to * start a new thread. This way, if it's the SDL.DLL which uses this API, * then the RTL of SDL.DLL will be used to create the new thread, and if it's * the application, then the RTL of the application will be used. * So, in short: * Always use the _beginthread() and _endthread() of the calling runtime library! */#define SDL_PASSED_BEGINTHREAD_ENDTHREAD#ifndef _WIN32_WCE#include <process.h> /* This has _beginthread() and _endthread() defined! */#endif#ifdef __OS2__typedef int (*pfnSDL_CurrentBeginThread)(void (*func)(void *), void *, unsigned, void *arg); typedef void (*pfnSDL_CurrentEndThread)(void);#elsetypedef uintptr_t (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned, unsigned (__stdcall *func)(void *), void *arg, unsigned, unsigned *threadID);typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code);#endifextern DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(int (SDLCALL *fn)(void *), void *data, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread);#ifdef __OS2__#define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthread, _endthread)#elif defined(_WIN32_WCE)#define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, NULL, NULL)#else#define SDL_CreateThread(fn, data) SDL_CreateThread(fn, data, _beginthreadex, _endthreadex)#endif#elseextern DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(int (SDLCALL *fn)(void *), void *data);#endif/** Get the 32-bit thread identifier for the current thread */extern DECLSPEC Uint32 SDLCALL SDL_ThreadID(void);/** Get the 32-bit thread identifier for the specified thread, * equivalent to SDL_ThreadID() if the specified thread is NULL. */extern DECLSPEC Uint32 SDLCALL SDL_GetThreadID(SDL_Thread *thread);/** Wait for a thread to finish. * The return code for the thread function is placed in the area * pointed to by 'status', if 'status' is not NULL. */extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread *thread, int *status);/** Forcefully kill a thread without worrying about its state */extern DECLSPEC void SDLCALL SDL_KillThread(SDL_Thread *thread);/* Ends C function definitions when using C++ */#ifdef __cplusplus}#endif#include "close_code.h"#endif /* _SDL_thread_h */