1 /** 2 * Copyright (c) 2019, The Linux Foundation. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer in the documentation and/or other materials provided 12 * with the distribution. 13 * * Neither the name of The Linux Foundation nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef PTHREAD_RW_MUTEX_H 31 #define PTHREAD_RW_MUTEX_H 32 33 #include <pthread.h> 34 #include <stdlib.h> 35 #include <stdio.h> 36 37 /* asserts may be compiled out, this should always be present */ 38 #define ABORT_FAIL( ff ) \ 39 do {\ 40 if(! (ff) ) {\ 41 fprintf(stderr, "assertion \"%s\" failed: file \"%s\", line %d\n", #ff, __FILE__, __LINE__);\ 42 abort();\ 43 }\ 44 } while(0) 45 46 #define RW_MUTEX_T pthread_rwlock_t 47 #define RW_MUTEX_CTOR(mut) ABORT_FAIL(0 == pthread_rwlock_init( & (mut), 0)) 48 #define RW_MUTEX_LOCK_READ(mut) ABORT_FAIL(0 == pthread_rwlock_rdlock( & (mut))) 49 50 #define RW_MUTEX_UNLOCK_READ(mut) ABORT_FAIL(0 == pthread_rwlock_unlock( & (mut))) 51 52 #define RW_MUTEX_LOCK_WRITE(mut) ABORT_FAIL(0 == pthread_rwlock_wrlock( & (mut))) 53 54 #define RW_MUTEX_UNLOCK_WRITE(mut) ABORT_FAIL(0 == pthread_rwlock_unlock( & (mut))) 55 56 #define RW_MUTEX_DTOR(mut) ABORT_FAIL(0 == pthread_rwlock_destroy( & (mut))) 57 58 59 #endif //PTHREAD_RW_MUTEX_H 60