SDL_thread.h

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/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

#ifndef SDL_thread_h_
#define SDL_thread_h_

#include "SDL_stdinc.h"
#include "SDL_error.h"

/* Thread synchronization primitives */
#include "SDL_atomic.h"
#include "SDL_mutex.h"

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

/* The SDL thread structure, defined in SDL_thread.c */
struct SDL_Thread;
typedef struct SDL_Thread SDL_Thread;

/* The SDL thread ID */
typedef unsigned long SDL_threadID;

/* Thread local storage ID, 0 is the invalid ID */
typedef unsigned int SDL_TLSID;

typedef enum {
    SDL_THREAD_PRIORITY_LOW,
    SDL_THREAD_PRIORITY_NORMAL,
    SDL_THREAD_PRIORITY_HIGH,
    SDL_THREAD_PRIORITY_TIME_CRITICAL
} SDL_ThreadPriority;

typedef int (SDLCALL * SDL_ThreadFunction) (void *data);

#if defined(__WIN32__) && !defined(HAVE_LIBC)

#define SDL_PASSED_BEGINTHREAD_ENDTHREAD
#include <process.h> /* _beginthreadex() and _endthreadex() */

typedef uintptr_t(__cdecl * pfnSDL_CurrentBeginThread)
                   (void *, unsigned, unsigned (__stdcall *func)(void *),
                    void * /*arg*/, unsigned, unsigned * /* threadID */);
typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code);

extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                 pfnSDL_CurrentBeginThread pfnBeginThread,
                 pfnSDL_CurrentEndThread pfnEndThread);

extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThreadWithStackSize(int (SDLCALL * fn) (void *),
                 const char *name, const size_t stacksize, void *data,
                 pfnSDL_CurrentBeginThread pfnBeginThread,
                 pfnSDL_CurrentEndThread pfnEndThread);


#if defined(SDL_CreateThread) && SDL_DYNAMIC_API
#undef SDL_CreateThread
#define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
#undef SDL_CreateThreadWithStackSize
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
#else
#define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthreadex, (pfnSDL_CurrentEndThread)_endthreadex)
#endif

#elif defined(__OS2__)
/*
 * just like the windows case above:  We compile SDL2
 * into a dll with Watcom's runtime statically linked.
 */
#define SDL_PASSED_BEGINTHREAD_ENDTHREAD
#ifndef __EMX__
#include <process.h>
#else
#include <stdlib.h>
#endif
typedef int (*pfnSDL_CurrentBeginThread)(void (*func)(void *), void *, unsigned, void * /*arg*/);
typedef void (*pfnSDL_CurrentEndThread)(void);
extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data,
                 pfnSDL_CurrentBeginThread pfnBeginThread,
                 pfnSDL_CurrentEndThread pfnEndThread);
extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data,
                 pfnSDL_CurrentBeginThread pfnBeginThread,
                 pfnSDL_CurrentEndThread pfnEndThread);
#if defined(SDL_CreateThread) && SDL_DYNAMIC_API
#undef SDL_CreateThread
#define SDL_CreateThread(fn, name, data) SDL_CreateThread_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
#undef SDL_CreateThreadWithStackSize
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize_REAL(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
#else
#define SDL_CreateThread(fn, name, data) SDL_CreateThread(fn, name, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSize(fn, name, stacksize, data, (pfnSDL_CurrentBeginThread)_beginthread, (pfnSDL_CurrentEndThread)_endthread)
#endif

#else

extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);

extern DECLSPEC SDL_Thread *SDLCALL
SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data);

#endif

extern DECLSPEC const char *SDLCALL SDL_GetThreadName(SDL_Thread *thread);

extern DECLSPEC SDL_threadID SDLCALL SDL_ThreadID(void);

extern DECLSPEC SDL_threadID SDLCALL SDL_GetThreadID(SDL_Thread * thread);

extern DECLSPEC int SDLCALL SDL_SetThreadPriority(SDL_ThreadPriority priority);

extern DECLSPEC void SDLCALL SDL_WaitThread(SDL_Thread * thread, int *status);

extern DECLSPEC void SDLCALL SDL_DetachThread(SDL_Thread * thread);

extern DECLSPEC SDL_TLSID SDLCALL SDL_TLSCreate(void);

extern DECLSPEC void * SDLCALL SDL_TLSGet(SDL_TLSID id);

extern DECLSPEC int SDLCALL SDL_TLSSet(SDL_TLSID id, const void *value, void (SDLCALL *destructor)(void*));


/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* SDL_thread_h_ */

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