151 lines
3.8 KiB
C
151 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 2005 David Xu <davidxu@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 unmodified, 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 ``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 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 "thr_private.h"
|
|
#include "thr_umtx.h"
|
|
|
|
void
|
|
_thr_umutex_init(struct umutex *mtx)
|
|
{
|
|
static struct umutex default_mtx = DEFAULT_UMUTEX;
|
|
|
|
*mtx = default_mtx;
|
|
mtx->m_spincount = _thr_adaptive_spin;
|
|
}
|
|
|
|
int
|
|
__thr_umutex_lock(struct umutex *mtx)
|
|
{
|
|
if (_umtx_op(mtx, UMTX_OP_MUTEX_LOCK, 0, 0, 0) != -1)
|
|
return 0;
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
__thr_umutex_timedlock(struct umutex *mtx,
|
|
const struct timespec *timeout)
|
|
{
|
|
if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
|
|
timeout->tv_nsec <= 0)))
|
|
return (ETIMEDOUT);
|
|
if (_umtx_op(mtx, UMTX_OP_MUTEX_LOCK, 0, 0,
|
|
__DECONST(void *, timeout)) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
__thr_umutex_unlock(struct umutex *mtx)
|
|
{
|
|
if (_umtx_op(mtx, UMTX_OP_MUTEX_UNLOCK, 0, 0, 0) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
__thr_umutex_trylock(struct umutex *mtx)
|
|
{
|
|
if (_umtx_op(mtx, UMTX_OP_MUTEX_TRYLOCK, 0, 0, 0) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
__thr_umutex_set_ceiling(struct umutex *mtx, uint32_t ceiling,
|
|
uint32_t *oldceiling)
|
|
{
|
|
if (_umtx_op(mtx, UMTX_OP_SET_CEILING, ceiling, oldceiling, 0) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
_thr_umtx_wait(volatile umtx_t *mtx, long id, const struct timespec *timeout)
|
|
{
|
|
if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
|
|
timeout->tv_nsec <= 0)))
|
|
return (ETIMEDOUT);
|
|
if (_umtx_op(__DEVOLATILE(void *, mtx), UMTX_OP_WAIT, id, 0,
|
|
__DECONST(void*, timeout)) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
_thr_umtx_wake(volatile umtx_t *mtx, int nr_wakeup)
|
|
{
|
|
if (_umtx_op(__DEVOLATILE(void *, mtx), UMTX_OP_WAKE,
|
|
nr_wakeup, 0, 0) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|
|
|
|
void
|
|
_thr_ucond_init(struct ucond *cv)
|
|
{
|
|
bzero(cv, sizeof(struct ucond));
|
|
}
|
|
|
|
int
|
|
_thr_ucond_wait(struct ucond *cv, struct umutex *m,
|
|
const struct timespec *timeout, int check_unparking)
|
|
{
|
|
if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
|
|
timeout->tv_nsec <= 0))) {
|
|
__thr_umutex_unlock(m);
|
|
return (ETIMEDOUT);
|
|
}
|
|
if (_umtx_op(cv, UMTX_OP_CV_WAIT,
|
|
check_unparking ? UMTX_CHECK_UNPARKING : 0,
|
|
m, __DECONST(void*, timeout)) != -1) {
|
|
return (0);
|
|
}
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
_thr_ucond_signal(struct ucond *cv)
|
|
{
|
|
if (!cv->c_has_waiters)
|
|
return (0);
|
|
if (_umtx_op(cv, UMTX_OP_CV_SIGNAL, 0, NULL, NULL) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|
|
|
|
int
|
|
_thr_ucond_broadcast(struct ucond *cv)
|
|
{
|
|
if (!cv->c_has_waiters)
|
|
return (0);
|
|
if (_umtx_op(cv, UMTX_OP_CV_BROADCAST, 0, NULL, NULL) != -1)
|
|
return (0);
|
|
return (errno);
|
|
}
|