rwlock.h

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//  This file is part of MANTIS OS, Operating System
//  See http://mantis.cs.colorado.edu/
//
//  Copyright (C) 2003,2004,2005 University of Colorado, Boulder
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the mos license (see file LICENSE)

/** @file mos/kernel/linux/include/rwlock.h
 * @brief Basic read-write locking support.
 *
 * @author Lane Phillips
 * @date Created: 02/26/2005
 */

#ifndef RWLOCK_H_
#define RWLOCK_H_

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

/** @brief Read-write lock is locked */
#define RWLOCK_LOCKED EBUSY
/** @brief Read-write lock is unlocked */
#define RWLOCK_OK 0

typedef pthread_rwlock_t mos_rwlock_t;

#define rwlock_init(lock)		pthread_rwlock_init(lock,NULL)
#define rwlock_rdlock(lock)		pthread_rwlock_rdlock(lock)
#define rwlock_tryrdlock(lock)	pthread_rwlock_tryrdlock(lock)
#define rwlock_wrlock(lock)		pthread_rwlock_wrlock(lock)
#define rwlock_trywrlock(lock)	pthread_rwlock_trywrlock(lock)
#define rwlock_unlock(lock)		pthread_rwlock_unlock(lock)

// Not implemented
/*void rwlock_timedrdlock(lock,
            const struct timespec *restrict);
void rwlock_timedwrlock(lock,
            const struct timespec *restrict);*/

#endif