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mutex_pthread.cpp

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/*
        $Id: mutex_pthread.cpp,v 1.1.1.1 2000/04/09 12:18:02 mbn Exp $

        ------------------------------------------------------------------------
        ClanLib, the platform independent game SDK.

        This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
        version 2. See COPYING for details.

        For a total list of contributers see CREDITS.

        ------------------------------------------------------------------------
*/

#include "Core/precomp.h"

#include <pthread.h>
#include "mutex_pthread.h"

// We need to do this because the posix threads library under linux obviously
// suck:
extern "C"
{
        int pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind);
}

CL_Mutex *CL_Mutex::create()
{
        return new CL_Mutex_Posix;
}

CL_Mutex_Posix::CL_Mutex_Posix()
{
        pthread_mutexattr_t attr;
        pthread_mutexattr_init(&attr);
        pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
        pthread_mutex_init(&mutex, &attr);
        pthread_mutexattr_destroy(&attr);

        pthread_cond_init(&cond,0);
}

CL_Mutex_Posix::~CL_Mutex_Posix()
{
        pthread_mutex_destroy(&mutex);
        pthread_cond_destroy(&cond);
}
        
void CL_Mutex_Posix::enter()
{
        pthread_mutex_lock(&mutex);
}

void CL_Mutex_Posix::leave()
{
        pthread_mutex_unlock(&mutex);
}


void CL_Mutex_Posix::wait()
{
        pthread_cond_wait(&cond,&mutex);
}


void CL_Mutex_Posix::notify()
{
        pthread_cond_signal(&cond);
}

void CL_Mutex_Posix::notify_all()
{
        pthread_cond_broadcast(&cond);
}

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