/*

  Simple DirectMedia Layer

  Copyright (C) 1997-2017 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.

*/

#include "../../SDL_internal.h"

extern "C" {

#include "SDL_thread.h"

#include "SDL_systhread_c.h"

#include "SDL_log.h"

}

#include <system_error>

#include "SDL_sysmutex_c.h"

#include <Windows.h>

/* Create a mutex */

extern "C"

SDL_mutex *

SDL_CreateMutex(void)

{

    /* Allocate and initialize the mutex */

    try {

        SDL_mutex * mutex = new SDL_mutex;

        return mutex;

    } catch (std::system_error & ex) {

        SDL_SetError("unable to create a C++ mutex: code=%d; %s", ex.code(), ex.what());

        return NULL;

    } catch (std::bad_alloc &) {

        SDL_OutOfMemory();

        return NULL;

    }

}

/* Free the mutex */

extern "C"

void

SDL_DestroyMutex(SDL_mutex * mutex)

{

    if (mutex) {

        delete mutex;

    }

}

/* Lock the semaphore */

extern "C"

int

SDL_mutexP(SDL_mutex * mutex)

{

    if (mutex == NULL) {

        SDL_SetError("Passed a NULL mutex");

        return -1;

    }

    try {

        mutex->cpp_mutex.lock();

        return 0;

    } catch (std::system_error & ex) {

        SDL_SetError("unable to lock a C++ mutex: code=%d; %s", ex.code(), ex.what());

        return -1;

    }

}

/* TryLock the mutex */

int

SDL_TryLockMutex(SDL_mutex * mutex)

{

    int retval = 0;

    if (mutex == NULL) {

        return SDL_SetError("Passed a NULL mutex");

    }

    if (mutex->cpp_mutex.try_lock() == false) {

        retval = SDL_MUTEX_TIMEDOUT;

    }

    return retval;

}

/* Unlock the mutex */

extern "C"

int

SDL_mutexV(SDL_mutex * mutex)

{

    if (mutex == NULL) {

        SDL_SetError("Passed a NULL mutex");

        return -1;

    }

    mutex->cpp_mutex.unlock();

    return 0;

}

/* vi: set ts=4 sw=4 expandtab: */