/**
 * Copyright (c) 2019, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above
 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials provided
 *      with the distribution.
 *    * Neither the name of The Linux Foundation nor the names of its
 *      contributors may be used to endorse or promote products derived
 *      from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef PTHREAD_RW_MUTEX_H
#define PTHREAD_RW_MUTEX_H

#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>

/* asserts may be compiled out, this should always be present */
#define ABORT_FAIL( ff ) \
   do {\
      if(! (ff) ) {\
         fprintf(stderr, "assertion \"%s\" failed: file \"%s\", line %d\n", #ff, __FILE__, __LINE__);\
         abort();\
      }\
   } while(0)

#define RW_MUTEX_T                  pthread_rwlock_t
#define RW_MUTEX_CTOR(mut)          ABORT_FAIL(0 == pthread_rwlock_init( & (mut), 0))
#define RW_MUTEX_LOCK_READ(mut)     ABORT_FAIL(0 == pthread_rwlock_rdlock( & (mut)))

#define RW_MUTEX_UNLOCK_READ(mut)   ABORT_FAIL(0 == pthread_rwlock_unlock( & (mut)))

#define RW_MUTEX_LOCK_WRITE(mut)    ABORT_FAIL(0 == pthread_rwlock_wrlock( & (mut)))

#define RW_MUTEX_UNLOCK_WRITE(mut)  ABORT_FAIL(0 == pthread_rwlock_unlock( & (mut)))

#define RW_MUTEX_DTOR(mut)          ABORT_FAIL(0 == pthread_rwlock_destroy( & (mut)))


#endif //PTHREAD_RW_MUTEX_H