187 lines
4.1 KiB
C
187 lines
4.1 KiB
C
/*-
|
|
* Copyright (c) 2009-2010 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Pawel Jakub Dawidek under sponsorship from
|
|
* the FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _SYNCH_H_
|
|
#define _SYNCH_H_
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <pthread_np.h>
|
|
#include <stdbool.h>
|
|
#include <time.h>
|
|
|
|
static __inline void
|
|
mtx_init(pthread_mutex_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_mutex_init(lock, NULL);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
mtx_destroy(pthread_mutex_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_mutex_destroy(lock);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
mtx_lock(pthread_mutex_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_mutex_lock(lock);
|
|
assert(error == 0);
|
|
}
|
|
static __inline bool
|
|
mtx_trylock(pthread_mutex_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_mutex_trylock(lock);
|
|
assert(error == 0 || error == EBUSY);
|
|
return (error == 0);
|
|
}
|
|
static __inline void
|
|
mtx_unlock(pthread_mutex_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_mutex_unlock(lock);
|
|
assert(error == 0);
|
|
}
|
|
static __inline bool
|
|
mtx_owned(pthread_mutex_t *lock)
|
|
{
|
|
|
|
return (pthread_mutex_isowned_np(lock) != 0);
|
|
}
|
|
|
|
static __inline void
|
|
rw_init(pthread_rwlock_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_rwlock_init(lock, NULL);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
rw_destroy(pthread_rwlock_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_rwlock_destroy(lock);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
rw_rlock(pthread_rwlock_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_rwlock_rdlock(lock);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
rw_wlock(pthread_rwlock_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_rwlock_wrlock(lock);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
rw_unlock(pthread_rwlock_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_rwlock_unlock(lock);
|
|
assert(error == 0);
|
|
}
|
|
|
|
static __inline void
|
|
cv_init(pthread_cond_t *cv)
|
|
{
|
|
pthread_condattr_t attr;
|
|
int error;
|
|
|
|
error = pthread_condattr_init(&attr);
|
|
assert(error == 0);
|
|
error = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
|
|
assert(error == 0);
|
|
error = pthread_cond_init(cv, &attr);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
cv_wait(pthread_cond_t *cv, pthread_mutex_t *lock)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_cond_wait(cv, lock);
|
|
assert(error == 0);
|
|
}
|
|
static __inline bool
|
|
cv_timedwait(pthread_cond_t *cv, pthread_mutex_t *lock, int timeout)
|
|
{
|
|
struct timespec ts;
|
|
int error;
|
|
|
|
if (timeout == 0) {
|
|
cv_wait(cv, lock);
|
|
return (false);
|
|
}
|
|
|
|
error = clock_gettime(CLOCK_MONOTONIC, &ts);
|
|
assert(error == 0);
|
|
ts.tv_sec += timeout;
|
|
error = pthread_cond_timedwait(cv, lock, &ts);
|
|
assert(error == 0 || error == ETIMEDOUT);
|
|
return (error == ETIMEDOUT);
|
|
}
|
|
static __inline void
|
|
cv_signal(pthread_cond_t *cv)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_cond_signal(cv);
|
|
assert(error == 0);
|
|
}
|
|
static __inline void
|
|
cv_broadcast(pthread_cond_t *cv)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_cond_broadcast(cv);
|
|
assert(error == 0);
|
|
}
|
|
#endif /* !_SYNCH_H_ */
|