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60 lines
2.5 KiB
60 lines
2.5 KiB
/**
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* Copyright (c) 2019, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef PTHREAD_RW_MUTEX_H
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#define PTHREAD_RW_MUTEX_H
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#include <pthread.h>
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#include <stdlib.h>
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#include <stdio.h>
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/* asserts may be compiled out, this should always be present */
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#define ABORT_FAIL( ff ) \
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do {\
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if(! (ff) ) {\
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fprintf(stderr, "assertion \"%s\" failed: file \"%s\", line %d\n", #ff, __FILE__, __LINE__);\
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abort();\
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}\
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} while(0)
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#define RW_MUTEX_T pthread_rwlock_t
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#define RW_MUTEX_CTOR(mut) ABORT_FAIL(0 == pthread_rwlock_init( & (mut), 0))
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#define RW_MUTEX_LOCK_READ(mut) ABORT_FAIL(0 == pthread_rwlock_rdlock( & (mut)))
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#define RW_MUTEX_UNLOCK_READ(mut) ABORT_FAIL(0 == pthread_rwlock_unlock( & (mut)))
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#define RW_MUTEX_LOCK_WRITE(mut) ABORT_FAIL(0 == pthread_rwlock_wrlock( & (mut)))
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#define RW_MUTEX_UNLOCK_WRITE(mut) ABORT_FAIL(0 == pthread_rwlock_unlock( & (mut)))
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#define RW_MUTEX_DTOR(mut) ABORT_FAIL(0 == pthread_rwlock_destroy( & (mut)))
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#endif //PTHREAD_RW_MUTEX_H
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