171 lines
3.9 KiB
C
171 lines
3.9 KiB
C
/*-
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* Copyright (c) 2009-2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Pawel Jakub Dawidek under sponsorship from
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* the FreeBSD Foundation.
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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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYNCH_H_
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#define _SYNCH_H_
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#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <pthread_np.h>
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#include <stdbool.h>
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#include <time.h>
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static __inline void
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mtx_init(pthread_mutex_t *lock)
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{
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int error;
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error = pthread_mutex_init(lock, NULL);
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assert(error == 0);
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}
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static __inline void
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mtx_lock(pthread_mutex_t *lock)
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{
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int error;
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error = pthread_mutex_lock(lock);
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assert(error == 0);
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}
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static __inline bool
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mtx_trylock(pthread_mutex_t *lock)
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{
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int error;
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error = pthread_mutex_trylock(lock);
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assert(error == 0 || error == EBUSY);
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return (error == 0);
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}
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static __inline void
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mtx_unlock(pthread_mutex_t *lock)
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{
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int error;
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error = pthread_mutex_unlock(lock);
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assert(error == 0);
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}
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static __inline bool
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mtx_owned(pthread_mutex_t *lock)
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{
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return (pthread_mutex_isowned_np(lock) != 0);
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}
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static __inline void
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rw_init(pthread_rwlock_t *lock)
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{
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int error;
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error = pthread_rwlock_init(lock, NULL);
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assert(error == 0);
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}
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static __inline void
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rw_rlock(pthread_rwlock_t *lock)
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{
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int error;
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error = pthread_rwlock_rdlock(lock);
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assert(error == 0);
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}
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static __inline void
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rw_wlock(pthread_rwlock_t *lock)
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{
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int error;
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error = pthread_rwlock_wrlock(lock);
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assert(error == 0);
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}
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static __inline void
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rw_unlock(pthread_rwlock_t *lock)
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{
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int error;
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error = pthread_rwlock_unlock(lock);
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assert(error == 0);
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}
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static __inline void
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cv_init(pthread_cond_t *cv)
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{
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pthread_condattr_t attr;
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int error;
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error = pthread_condattr_init(&attr);
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assert(error == 0);
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error = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
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assert(error == 0);
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error = pthread_cond_init(cv, &attr);
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assert(error == 0);
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}
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static __inline void
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cv_wait(pthread_cond_t *cv, pthread_mutex_t *lock)
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{
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int error;
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error = pthread_cond_wait(cv, lock);
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assert(error == 0);
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}
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static __inline bool
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cv_timedwait(pthread_cond_t *cv, pthread_mutex_t *lock, int timeout)
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{
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struct timespec ts;
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int error;
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if (timeout == 0) {
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cv_wait(cv, lock);
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return (false);
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}
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error = clock_gettime(CLOCK_MONOTONIC, &ts);
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assert(error == 0);
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ts.tv_sec += timeout;
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error = pthread_cond_timedwait(cv, lock, &ts);
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assert(error == 0 || error == ETIMEDOUT);
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return (error == ETIMEDOUT);
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}
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static __inline void
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cv_signal(pthread_cond_t *cv)
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{
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int error;
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error = pthread_cond_signal(cv);
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assert(error == 0);
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}
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static __inline void
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cv_broadcast(pthread_cond_t *cv)
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{
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int error;
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error = pthread_cond_broadcast(cv);
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assert(error == 0);
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}
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#endif /* !_SYNCH_H_ */
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