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/*
* 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"
#ifndef HAS__UMTX_OP_ERR
int _umtx_op_err(void *obj, int op, u_long val, void *uaddr, void *uaddr2)
{
if (_umtx_op(obj, op, val, uaddr, uaddr2) == -1)
return (errno);
return (0);
}
#endif
void
_thr_umutex_init(struct umutex *mtx)
{
static struct umutex default_mtx = DEFAULT_UMUTEX;
*mtx = default_mtx;
}
int
__thr_umutex_lock(struct umutex *mtx)
{
return _umtx_op_err(mtx, UMTX_OP_MUTEX_LOCK, 0, 0, 0);
}
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);
return _umtx_op_err(mtx, UMTX_OP_MUTEX_LOCK, 0, 0,
__DECONST(void *, timeout));
}
int
__thr_umutex_unlock(struct umutex *mtx)
{
return _umtx_op_err(mtx, UMTX_OP_MUTEX_UNLOCK, 0, 0, 0);
}
int
__thr_umutex_trylock(struct umutex *mtx)
{
return _umtx_op_err(mtx, UMTX_OP_MUTEX_TRYLOCK, 0, 0, 0);
}
int
__thr_umutex_set_ceiling(struct umutex *mtx, uint32_t ceiling,
uint32_t *oldceiling)
{
return _umtx_op_err(mtx, UMTX_OP_SET_CEILING, ceiling, oldceiling, 0);
}
int
_thr_umtx_wait(volatile long *mtx, long id, const struct timespec *timeout)
{
if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
timeout->tv_nsec <= 0)))
return (ETIMEDOUT);
return _umtx_op_err(__DEVOLATILE(void *, mtx), UMTX_OP_WAIT, id, 0,
__DECONST(void*, timeout));
}
int
_thr_umtx_wait_uint(volatile u_int *mtx, u_int id, const struct timespec *timeout, int shared)
{
if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
timeout->tv_nsec <= 0)))
return (ETIMEDOUT);
return _umtx_op_err(__DEVOLATILE(void *, mtx),
shared ? UMTX_OP_WAIT_UINT : UMTX_OP_WAIT_UINT_PRIVATE, id, 0,
__DECONST(void*, timeout));
}
int
_thr_umtx_wake(volatile void *mtx, int nr_wakeup, int shared)
{
return _umtx_op_err(__DEVOLATILE(void *, mtx), shared ? UMTX_OP_WAKE : UMTX_OP_WAKE_PRIVATE,
nr_wakeup, 0, 0);
}
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);
}
return _umtx_op_err(cv, UMTX_OP_CV_WAIT,
check_unparking ? UMTX_CHECK_UNPARKING : 0,
m, __DECONST(void*, timeout));
}
int
_thr_ucond_signal(struct ucond *cv)
{
if (!cv->c_has_waiters)
return (0);
return _umtx_op_err(cv, UMTX_OP_CV_SIGNAL, 0, NULL, NULL);
}
int
_thr_ucond_broadcast(struct ucond *cv)
{
if (!cv->c_has_waiters)
return (0);
return _umtx_op_err(cv, UMTX_OP_CV_BROADCAST, 0, NULL, NULL);
}
int
__thr_rwlock_rdlock(struct urwlock *rwlock, int flags, struct timespec *tsp)
{
return _umtx_op_err(rwlock, UMTX_OP_RW_RDLOCK, flags, NULL, tsp);
}
int
__thr_rwlock_wrlock(struct urwlock *rwlock, struct timespec *tsp)
{
return _umtx_op_err(rwlock, UMTX_OP_RW_WRLOCK, 0, NULL, tsp);
}
int
__thr_rwlock_unlock(struct urwlock *rwlock)
{
return _umtx_op_err(rwlock, UMTX_OP_RW_UNLOCK, 0, NULL, NULL);
}
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