/* 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 <errno.h>

#include <pthread.h>

#include <sys/time.h>

#include <unistd.h>

#include <signal.h>

#ifndef _XOPEN_SOURCE

#define LIPLAP

#define _XOPEN_SOURCE 1 /* nanosleep */

#endif

#include <time.h>

#ifdef LIPLAP

#undef _XOPEN_SOURCE

#endif

#include "owfthread.h"

#include "owfmemory.h"

#include "owftypes.h"

OWF_API_CALL void

OWF_Thread_Destroy(OWF_THREAD thread)

{

    if (thread)

    {

        OWF_Thread_Join(thread, NULL);

        xfree(thread);

    }

}

OWF_API_CALL OWF_THREAD

OWF_Thread_Create(void* (*threadfunc)(void*), void* data)

{

    pthread_t*              handle;

    handle = (pthread_t*)xalloc(sizeof(pthread_t), 1);

    if (!handle)

    {

        return NULL;

    }

    if (pthread_create(handle, NULL, threadfunc, data))

    {

        xfree(handle);

        return NULL;

    }

    return (OWF_THREAD) handle;

}

OWF_API_CALL OWFint

OWF_Thread_Join(OWF_THREAD thread, void** retval)

{

    OWFint          ret = EINVAL;

    if (!thread)

    {

        return ret;

    }

    ret = (int) pthread_join(*(pthread_t*) thread, retval);

    return ret;

}

OWF_API_CALL OWFint

OWF_Thread_Cancel(OWF_THREAD thread)

{

	(void)thread;

	return EINVAL;

}

OWF_API_CALL void

OWF_Thread_Exit(void* retval)

{

    pthread_exit(retval);

}

OWF_API_CALL void

OWF_Thread_MicroSleep(OWFuint32 usecs)

{

#if _POSIX_C_SOURCE >= 199309L

    struct timespec ts;

    ts.tv_sec = usecs / 1000000;

    ts.tv_nsec = (usecs % 1000000) * 1000;

    nanosleep(&ts, NULL);

#else

    usleep(usecs);

#endif

}

OWF_API_CALL void

OWF_Thread_Sleep(OWFuint32 secs)

{

    sleep(secs);

}

#ifdef __cplusplus

}

#endif