2 * Copyright (c) 2005 David Xu <davidxu@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include "thr_private.h"
33 #ifndef HAS__UMTX_OP_ERR
34 int _umtx_op_err(void *obj, int op, u_long val, void *uaddr, void *uaddr2)
36 if (_umtx_op(obj, op, val, uaddr, uaddr2) == -1)
43 _thr_umutex_init(struct umutex *mtx)
45 static struct umutex default_mtx = DEFAULT_UMUTEX;
51 __thr_umutex_lock(struct umutex *mtx)
53 return _umtx_op_err(mtx, UMTX_OP_MUTEX_LOCK, 0, 0, 0);
57 __thr_umutex_timedlock(struct umutex *mtx,
58 const struct timespec *timeout)
60 if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
61 timeout->tv_nsec <= 0)))
63 return _umtx_op_err(mtx, UMTX_OP_MUTEX_LOCK, 0, 0,
64 __DECONST(void *, timeout));
68 __thr_umutex_unlock(struct umutex *mtx)
70 return _umtx_op_err(mtx, UMTX_OP_MUTEX_UNLOCK, 0, 0, 0);
74 __thr_umutex_trylock(struct umutex *mtx)
76 return _umtx_op_err(mtx, UMTX_OP_MUTEX_TRYLOCK, 0, 0, 0);
80 __thr_umutex_set_ceiling(struct umutex *mtx, uint32_t ceiling,
83 return _umtx_op_err(mtx, UMTX_OP_SET_CEILING, ceiling, oldceiling, 0);
87 _thr_umtx_wait(volatile long *mtx, long id, const struct timespec *timeout)
89 if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
90 timeout->tv_nsec <= 0)))
92 return _umtx_op_err(__DEVOLATILE(void *, mtx), UMTX_OP_WAIT, id, 0,
93 __DECONST(void*, timeout));
97 _thr_umtx_wait_uint(volatile u_int *mtx, u_int id, const struct timespec *timeout, int shared)
99 if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
100 timeout->tv_nsec <= 0)))
102 return _umtx_op_err(__DEVOLATILE(void *, mtx),
103 shared ? UMTX_OP_WAIT_UINT : UMTX_OP_WAIT_UINT_PRIVATE, id, 0,
104 __DECONST(void*, timeout));
108 _thr_umtx_wake(volatile void *mtx, int nr_wakeup, int shared)
110 return _umtx_op_err(__DEVOLATILE(void *, mtx), shared ? UMTX_OP_WAKE : UMTX_OP_WAKE_PRIVATE,
115 _thr_ucond_init(struct ucond *cv)
117 bzero(cv, sizeof(struct ucond));
121 _thr_ucond_wait(struct ucond *cv, struct umutex *m,
122 const struct timespec *timeout, int check_unparking)
124 if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
125 timeout->tv_nsec <= 0))) {
126 __thr_umutex_unlock(m);
129 return _umtx_op_err(cv, UMTX_OP_CV_WAIT,
130 check_unparking ? UMTX_CHECK_UNPARKING : 0,
131 m, __DECONST(void*, timeout));
135 _thr_ucond_signal(struct ucond *cv)
137 if (!cv->c_has_waiters)
139 return _umtx_op_err(cv, UMTX_OP_CV_SIGNAL, 0, NULL, NULL);
143 _thr_ucond_broadcast(struct ucond *cv)
145 if (!cv->c_has_waiters)
147 return _umtx_op_err(cv, UMTX_OP_CV_BROADCAST, 0, NULL, NULL);
151 __thr_rwlock_rdlock(struct urwlock *rwlock, int flags, struct timespec *tsp)
153 return _umtx_op_err(rwlock, UMTX_OP_RW_RDLOCK, flags, NULL, tsp);
157 __thr_rwlock_wrlock(struct urwlock *rwlock, struct timespec *tsp)
159 return _umtx_op_err(rwlock, UMTX_OP_RW_WRLOCK, 0, NULL, tsp);
163 __thr_rwlock_unlock(struct urwlock *rwlock)
165 return _umtx_op_err(rwlock, UMTX_OP_RW_UNLOCK, 0, NULL, NULL);