/**

* hdr_thread.c

* Written by Philip Orwig and released to the public domain,

* as explained at http://creativecommons.org/publicdomain/zero/1.0/

*/

#include <stdlib.h>

#include "hdr_thread.h"

struct hdr_mutex* hdr_mutex_alloc(void)

{

    return malloc(sizeof(hdr_mutex));

}

void hdr_mutex_free(struct hdr_mutex* mutex)

{

    free(mutex);

}

#if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)

#if !defined(WIN32_LEAN_AND_MEAN)

#define WIN32_LEAN_AND_MEAN

#endif

#include <windows.h>

#include <WinSock2.h>

int hdr_mutex_init(struct hdr_mutex* mutex)

{

    InitializeCriticalSection((CRITICAL_SECTION*)(mutex->_critical_section));

    return 0;

}

void hdr_mutex_destroy(struct hdr_mutex* mutex)

{

    DeleteCriticalSection((CRITICAL_SECTION*)(mutex->_critical_section));

}

void hdr_mutex_lock(struct hdr_mutex* mutex)

{

    EnterCriticalSection((CRITICAL_SECTION*)(mutex->_critical_section));

}

void hdr_mutex_unlock(struct hdr_mutex* mutex)

{

    LeaveCriticalSection((CRITICAL_SECTION*)(mutex->_critical_section));

}

void hdr_yield()

{

    Sleep(0);

}

int hdr_usleep(unsigned int useconds)

{

    struct timeval tv;

    tv.tv_sec = (long)useconds / 1000000;

    tv.tv_usec = useconds % 1000000;

    select(0, NULL, NULL, NULL, &tv;;

    return 0;

}

#else

#include <pthread.h>

#include <unistd.h>

int hdr_mutex_init(struct hdr_mutex* mutex)

{

    return pthread_mutex_init(&mutex->_mutex, NULL);

}

void hdr_mutex_destroy(struct hdr_mutex* mutex)

{

    pthread_mutex_destroy(&mutex->_mutex);

}

void hdr_mutex_lock(struct hdr_mutex* mutex)

{

    pthread_mutex_lock(&mutex->_mutex);

}

void hdr_mutex_unlock(struct hdr_mutex* mutex)

{

    pthread_mutex_unlock(&mutex->_mutex);

}

void hdr_yield()

{

    sched_yield();

}

int hdr_usleep(unsigned int useconds)

{

    return usleep(useconds);

}

#endif