1/*- 2 * Copyright (c) 2009-2010 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Pawel Jakub Dawidek under sponsorship from 6 * the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 12 unchanged lines hidden (view full) --- 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * |
29 * $FreeBSD: head/sbin/hastd/synch.h 225787 2011-09-27 08:50:37Z pjd $ |
30 */ 31 32#ifndef _SYNCH_H_ 33#define _SYNCH_H_ 34 |
35#include <errno.h> 36#include <pthread.h> 37#include <pthread_np.h> 38#include <stdbool.h> 39#include <time.h> 40 |
41#include <pjdlog.h> 42 43#ifndef PJDLOG_ASSERT 44#include <assert.h> 45#define PJDLOG_ASSERT(...) assert(__VA_ARGS__) 46#endif 47 |
48static __inline void 49mtx_init(pthread_mutex_t *lock) 50{ 51 int error; 52 53 error = pthread_mutex_init(lock, NULL); |
54 PJDLOG_ASSERT(error == 0); |
55} 56static __inline void 57mtx_destroy(pthread_mutex_t *lock) 58{ 59 int error; 60 61 error = pthread_mutex_destroy(lock); |
62 PJDLOG_ASSERT(error == 0); |
63} 64static __inline void 65mtx_lock(pthread_mutex_t *lock) 66{ 67 int error; 68 69 error = pthread_mutex_lock(lock); |
70 PJDLOG_ASSERT(error == 0); |
71} 72static __inline bool 73mtx_trylock(pthread_mutex_t *lock) 74{ 75 int error; 76 77 error = pthread_mutex_trylock(lock); |
78 PJDLOG_ASSERT(error == 0 || error == EBUSY); |
79 return (error == 0); 80} 81static __inline void 82mtx_unlock(pthread_mutex_t *lock) 83{ 84 int error; 85 86 error = pthread_mutex_unlock(lock); |
87 PJDLOG_ASSERT(error == 0); |
88} 89static __inline bool 90mtx_owned(pthread_mutex_t *lock) 91{ 92 93 return (pthread_mutex_isowned_np(lock) != 0); 94} 95 96static __inline void 97rw_init(pthread_rwlock_t *lock) 98{ 99 int error; 100 101 error = pthread_rwlock_init(lock, NULL); |
102 PJDLOG_ASSERT(error == 0); |
103} 104static __inline void 105rw_destroy(pthread_rwlock_t *lock) 106{ 107 int error; 108 109 error = pthread_rwlock_destroy(lock); |
110 PJDLOG_ASSERT(error == 0); |
111} 112static __inline void 113rw_rlock(pthread_rwlock_t *lock) 114{ 115 int error; 116 117 error = pthread_rwlock_rdlock(lock); |
118 PJDLOG_ASSERT(error == 0); |
119} 120static __inline void 121rw_wlock(pthread_rwlock_t *lock) 122{ 123 int error; 124 125 error = pthread_rwlock_wrlock(lock); |
126 PJDLOG_ASSERT(error == 0); |
127} 128static __inline void 129rw_unlock(pthread_rwlock_t *lock) 130{ 131 int error; 132 133 error = pthread_rwlock_unlock(lock); |
134 PJDLOG_ASSERT(error == 0); |
135} 136 137static __inline void 138cv_init(pthread_cond_t *cv) 139{ 140 pthread_condattr_t attr; 141 int error; 142 143 error = pthread_condattr_init(&attr); |
144 PJDLOG_ASSERT(error == 0); |
145 error = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC); |
146 PJDLOG_ASSERT(error == 0); |
147 error = pthread_cond_init(cv, &attr); |
148 PJDLOG_ASSERT(error == 0); |
149 error = pthread_condattr_destroy(&attr); |
150 PJDLOG_ASSERT(error == 0); |
151} 152static __inline void 153cv_wait(pthread_cond_t *cv, pthread_mutex_t *lock) 154{ 155 int error; 156 157 error = pthread_cond_wait(cv, lock); |
158 PJDLOG_ASSERT(error == 0); |
159} 160static __inline bool 161cv_timedwait(pthread_cond_t *cv, pthread_mutex_t *lock, int timeout) 162{ 163 struct timespec ts; 164 int error; 165 166 if (timeout == 0) { 167 cv_wait(cv, lock); 168 return (false); 169 } 170 171 error = clock_gettime(CLOCK_MONOTONIC, &ts); |
172 PJDLOG_ASSERT(error == 0); |
173 ts.tv_sec += timeout; 174 error = pthread_cond_timedwait(cv, lock, &ts); |
175 PJDLOG_ASSERT(error == 0 || error == ETIMEDOUT); |
176 return (error == ETIMEDOUT); 177} 178static __inline void 179cv_signal(pthread_cond_t *cv) 180{ 181 int error; 182 183 error = pthread_cond_signal(cv); |
184 PJDLOG_ASSERT(error == 0); |
185} 186static __inline void 187cv_broadcast(pthread_cond_t *cv) 188{ 189 int error; 190 191 error = pthread_cond_broadcast(cv); |
192 PJDLOG_ASSERT(error == 0); |
193} 194#endif /* !_SYNCH_H_ */ |