117 lines
2.7 KiB
C
117 lines
2.7 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org>
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* 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 AUTHOR 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 AUTHOR 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.
|
||
|
|
*
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
__FBSDID("$FreeBSD$");
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
#include <pthread.h>
|
||
|
|
|
||
|
|
#include "threads.h"
|
||
|
|
|
||
|
|
void
|
||
|
|
mtx_destroy(mtx_t *mtx)
|
||
|
|
{
|
||
|
|
|
||
|
|
(void)pthread_mutex_destroy(mtx);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
mtx_init(mtx_t *mtx, int type)
|
||
|
|
{
|
||
|
|
pthread_mutexattr_t attr;
|
||
|
|
int mt;
|
||
|
|
|
||
|
|
switch (type) {
|
||
|
|
case mtx_plain:
|
||
|
|
case mtx_timed:
|
||
|
|
mt = PTHREAD_MUTEX_NORMAL;
|
||
|
|
break;
|
||
|
|
case mtx_plain | mtx_recursive:
|
||
|
|
case mtx_timed | mtx_recursive:
|
||
|
|
mt = PTHREAD_MUTEX_RECURSIVE;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return (thrd_error);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pthread_mutexattr_init(&attr) != 0)
|
||
|
|
return (thrd_error);
|
||
|
|
if (pthread_mutexattr_settype(&attr, mt) != 0)
|
||
|
|
return (thrd_error);
|
||
|
|
if (pthread_mutex_init(mtx, &attr) != 0)
|
||
|
|
return (thrd_error);
|
||
|
|
return (thrd_success);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
mtx_lock(mtx_t *mtx)
|
||
|
|
{
|
||
|
|
|
||
|
|
if (pthread_mutex_lock(mtx) != 0)
|
||
|
|
return (thrd_error);
|
||
|
|
return (thrd_success);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
mtx_timedlock(mtx_t *restrict mtx, const struct timespec *restrict ts)
|
||
|
|
{
|
||
|
|
|
||
|
|
switch (pthread_mutex_timedlock(mtx, ts)) {
|
||
|
|
case 0:
|
||
|
|
return (thrd_success);
|
||
|
|
case ETIMEDOUT:
|
||
|
|
return (thrd_timedout);
|
||
|
|
default:
|
||
|
|
return (thrd_error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
mtx_trylock(mtx_t *mtx)
|
||
|
|
{
|
||
|
|
|
||
|
|
switch (pthread_mutex_lock(mtx)) {
|
||
|
|
case 0:
|
||
|
|
return (thrd_success);
|
||
|
|
case EBUSY:
|
||
|
|
return (thrd_busy);
|
||
|
|
default:
|
||
|
|
return (thrd_error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
mtx_unlock(mtx_t *mtx)
|
||
|
|
{
|
||
|
|
|
||
|
|
if (pthread_mutex_unlock(mtx) != 0)
|
||
|
|
return (thrd_error);
|
||
|
|
return (thrd_success);
|
||
|
|
}
|