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Diffstat (limited to 'inc/mutex.h')
| -rw-r--r-- | inc/mutex.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/inc/mutex.h b/inc/mutex.h new file mode 100644 index 0000000..a318c44 --- /dev/null +++ b/inc/mutex.h @@ -0,0 +1,105 @@ +#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 |