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#ifndef MUTEX_H
#define MUTEX_H
/**
* 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.
*/
#if (defined __qdsp6__) || (defined __hexagon__)
#include "qurt_mutex.h"
#define RW_MUTEX_T qurt_mutex_t
#define RW_MUTEX_CTOR(mut) qurt_mutex_init(& (mut))
#define RW_MUTEX_LOCK_READ(mut) qurt_mutex_lock(& (mut))
#define RW_MUTEX_UNLOCK_READ(mut) qurt_mutex_unlock(& (mut))
#define RW_MUTEX_LOCK_WRITE(mut) qurt_mutex_lock(& (mut))
#define RW_MUTEX_UNLOCK_WRITE(mut) qurt_mutex_unlock(& (mut))
#define RW_MUTEX_DTOR(mut) qurt_mutex_destroy(& (mut))
#elif (1 == __linux) || (1 == __linux__) || (1 == __gnu_linux__) || (1 == linux)
#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)))
#else
#include "AEEstd.h"
#define RW_MUTEX_T uint32
#define RW_MUTEX_CTOR(mut) mut = 0
#define RW_MUTEX_LOCK_READ(mut) \
do {\
assert(STD_BIT_TEST(&mut, 1) == 0); \
assert(STD_BIT_TEST(&mut, 2) == 0); \
STD_BIT_SET(&mut, 1); \
} while (0)
#define RW_MUTEX_UNLOCK_READ(mut) \
do {\
assert(STD_BIT_TEST(&mut, 1)); \
assert(STD_BIT_TEST(&mut, 2) == 0); \
STD_BIT_CLEAR(&mut, 1); \
} while (0)
#define RW_MUTEX_LOCK_WRITE(mut) \
do {\
assert(STD_BIT_TEST(&mut, 1) == 0); \
assert(STD_BIT_TEST(&mut, 2) == 0); \
STD_BIT_SET(&mut, 2); \
} while (0)
#define RW_MUTEX_UNLOCK_WRITE(mut) \
do {\
assert(STD_BIT_TEST(&mut, 1) == 0); \
assert(STD_BIT_TEST(&mut, 2)); \
STD_BIT_CLEAR(&mut, 2); \
} while (0)
#define RW_MUTEX_DTOR(mut) mut = 0
#endif
#endif //MUTEX_H
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