/* Copyright (c) 2009 The Khronos Group Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and/or associated documentation files (the

 * "Materials"), to deal in the Materials without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sublicense, and/or sell copies of the Materials, and to

 * permit persons to whom the Materials are furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Materials.

 *

 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

 * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

 */

#ifdef __cplusplus

extern "C" {

#endif

#include <pthread.h>

#include <errno.h>

#include <stdlib.h>

#include "owfmemory.h"

#include "owfmutex.h"

#define MUTEX(x)        (pthread_mutex_t*)(*x)

OWF_API_CALL OWFint

OWF_Mutex_Init(OWF_MUTEX* mutex)

{

    if (!mutex)

    {

        return EINVAL;

    }

    *mutex = xalloc(1, sizeof(pthread_mutex_t));

    if (!*mutex)

    {

        return ENOMEM;

    }

    return pthread_mutex_init(MUTEX(mutex), NULL);

}

OWF_API_CALL OWFint

OWF_Mutex_Destroy(OWF_MUTEX* mutex)

{

    OWFint             err = EINVAL;

    if (!mutex)

    {

        return EINVAL;

    }

    if (*mutex)

    {

        err = pthread_mutex_destroy(MUTEX(mutex));

        xfree(*mutex);

        *mutex = NULL;

    }

    return err;

}

OWF_API_CALL OWFint

OWF_Mutex_Lock(OWF_MUTEX* mutex)

{

    if (!(mutex && *mutex))

    {

        return EINVAL;

    }

    return pthread_mutex_lock(MUTEX(mutex));

}

OWF_API_CALL OWFint

OWF_Mutex_Unlock(OWF_MUTEX* mutex)

{

    if (!(mutex && *mutex))

    {

        return EINVAL;

    }

    return pthread_mutex_unlock(MUTEX(mutex));

}

#ifdef __cplusplus

}

#endif