1243730Srwatson/*- 2243730Srwatson * Copyright (c) 2009-2010 The FreeBSD Foundation 3243730Srwatson * All rights reserved. 4243730Srwatson * 5243730Srwatson * This software was developed by Pawel Jakub Dawidek under sponsorship from 6243730Srwatson * the FreeBSD Foundation. 7243730Srwatson * 8243730Srwatson * Redistribution and use in source and binary forms, with or without 9243730Srwatson * modification, are permitted provided that the following conditions 10243730Srwatson * are met: 11243730Srwatson * 1. Redistributions of source code must retain the above copyright 12243730Srwatson * notice, this list of conditions and the following disclaimer. 13243730Srwatson * 2. Redistributions in binary form must reproduce the above copyright 14243730Srwatson * notice, this list of conditions and the following disclaimer in the 15243730Srwatson * documentation and/or other materials provided with the distribution. 16243730Srwatson * 17243730Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18243730Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19243730Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20243730Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21243730Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22243730Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23243730Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24243730Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25243730Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26243730Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27243730Srwatson * SUCH DAMAGE. 28243730Srwatson */ 29243730Srwatson 30243730Srwatson#ifndef _SYNCH_H_ 31243730Srwatson#define _SYNCH_H_ 32243730Srwatson 33243730Srwatson#include <errno.h> 34243730Srwatson#include <pthread.h> 35243730Srwatson#ifdef HAVE_PTHREAD_NP_H 36243730Srwatson#include <pthread_np.h> 37243730Srwatson#endif 38243730Srwatson#include <stdbool.h> 39243730Srwatson#include <time.h> 40243730Srwatson 41243734Srwatson#include "pjdlog.h" 42243730Srwatson 43243730Srwatson#ifndef PJDLOG_ASSERT 44243730Srwatson#include <assert.h> 45243730Srwatson#define PJDLOG_ASSERT(...) assert(__VA_ARGS__) 46243730Srwatson#endif 47243730Srwatson 48243730Srwatsonstatic __inline void 49243730Srwatsonmtx_init(pthread_mutex_t *lock) 50243730Srwatson{ 51243730Srwatson int error; 52243730Srwatson 53243730Srwatson error = pthread_mutex_init(lock, NULL); 54243730Srwatson PJDLOG_ASSERT(error == 0); 55243730Srwatson} 56243730Srwatsonstatic __inline void 57243730Srwatsonmtx_destroy(pthread_mutex_t *lock) 58243730Srwatson{ 59243730Srwatson int error; 60243730Srwatson 61243730Srwatson error = pthread_mutex_destroy(lock); 62243730Srwatson PJDLOG_ASSERT(error == 0); 63243730Srwatson} 64243730Srwatsonstatic __inline void 65243730Srwatsonmtx_lock(pthread_mutex_t *lock) 66243730Srwatson{ 67243730Srwatson int error; 68243730Srwatson 69243730Srwatson error = pthread_mutex_lock(lock); 70243730Srwatson PJDLOG_ASSERT(error == 0); 71243730Srwatson} 72243730Srwatsonstatic __inline bool 73243730Srwatsonmtx_trylock(pthread_mutex_t *lock) 74243730Srwatson{ 75243730Srwatson int error; 76243730Srwatson 77243730Srwatson error = pthread_mutex_trylock(lock); 78243730Srwatson PJDLOG_ASSERT(error == 0 || error == EBUSY); 79243730Srwatson return (error == 0); 80243730Srwatson} 81243730Srwatsonstatic __inline void 82243730Srwatsonmtx_unlock(pthread_mutex_t *lock) 83243730Srwatson{ 84243730Srwatson int error; 85243730Srwatson 86243730Srwatson error = pthread_mutex_unlock(lock); 87243730Srwatson PJDLOG_ASSERT(error == 0); 88243730Srwatson} 89243730Srwatsonstatic __inline bool 90243730Srwatsonmtx_owned(pthread_mutex_t *lock) 91243730Srwatson{ 92243730Srwatson 93243730Srwatson return (pthread_mutex_isowned_np(lock) != 0); 94243730Srwatson} 95243730Srwatson 96243730Srwatsonstatic __inline void 97243730Srwatsonrw_init(pthread_rwlock_t *lock) 98243730Srwatson{ 99243730Srwatson int error; 100243730Srwatson 101243730Srwatson error = pthread_rwlock_init(lock, NULL); 102243730Srwatson PJDLOG_ASSERT(error == 0); 103243730Srwatson} 104243730Srwatsonstatic __inline void 105243730Srwatsonrw_destroy(pthread_rwlock_t *lock) 106243730Srwatson{ 107243730Srwatson int error; 108243730Srwatson 109243730Srwatson error = pthread_rwlock_destroy(lock); 110243730Srwatson PJDLOG_ASSERT(error == 0); 111243730Srwatson} 112243730Srwatsonstatic __inline void 113243730Srwatsonrw_rlock(pthread_rwlock_t *lock) 114243730Srwatson{ 115243730Srwatson int error; 116243730Srwatson 117243730Srwatson error = pthread_rwlock_rdlock(lock); 118243730Srwatson PJDLOG_ASSERT(error == 0); 119243730Srwatson} 120243730Srwatsonstatic __inline void 121243730Srwatsonrw_wlock(pthread_rwlock_t *lock) 122243730Srwatson{ 123243730Srwatson int error; 124243730Srwatson 125243730Srwatson error = pthread_rwlock_wrlock(lock); 126243730Srwatson PJDLOG_ASSERT(error == 0); 127243730Srwatson} 128243730Srwatsonstatic __inline void 129243730Srwatsonrw_unlock(pthread_rwlock_t *lock) 130243730Srwatson{ 131243730Srwatson int error; 132243730Srwatson 133243730Srwatson error = pthread_rwlock_unlock(lock); 134243730Srwatson PJDLOG_ASSERT(error == 0); 135243730Srwatson} 136243730Srwatson 137243730Srwatsonstatic __inline void 138243730Srwatsoncv_init(pthread_cond_t *cv) 139243730Srwatson{ 140243730Srwatson pthread_condattr_t attr; 141243730Srwatson int error; 142243730Srwatson 143243730Srwatson error = pthread_condattr_init(&attr); 144243730Srwatson PJDLOG_ASSERT(error == 0); 145243730Srwatson#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK 146243730Srwatson error = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC); 147243730Srwatson PJDLOG_ASSERT(error == 0); 148243730Srwatson#endif 149243730Srwatson error = pthread_cond_init(cv, &attr); 150243730Srwatson PJDLOG_ASSERT(error == 0); 151243730Srwatson error = pthread_condattr_destroy(&attr); 152243730Srwatson PJDLOG_ASSERT(error == 0); 153243730Srwatson} 154243730Srwatsonstatic __inline void 155243730Srwatsoncv_wait(pthread_cond_t *cv, pthread_mutex_t *lock) 156243730Srwatson{ 157243730Srwatson int error; 158243730Srwatson 159243730Srwatson error = pthread_cond_wait(cv, lock); 160243730Srwatson PJDLOG_ASSERT(error == 0); 161243730Srwatson} 162243730Srwatsonstatic __inline bool 163243730Srwatsoncv_timedwait(pthread_cond_t *cv, pthread_mutex_t *lock, int timeout) 164243730Srwatson{ 165243730Srwatson struct timespec ts; 166243730Srwatson int error; 167243730Srwatson 168243730Srwatson if (timeout == 0) { 169243730Srwatson cv_wait(cv, lock); 170243730Srwatson return (false); 171243730Srwatson } 172243730Srwatson 173243730Srwatson#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK 174243730Srwatson error = clock_gettime(CLOCK_MONOTONIC, &ts); 175243730Srwatson PJDLOG_ASSERT(error == 0); 176243730Srwatson ts.tv_sec += timeout; 177243730Srwatson error = pthread_cond_timedwait(cv, lock, &ts); 178243730Srwatson#elif HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE_NP 179243730Srwatson ts.tv_sec = timeout; 180243730Srwatson ts.tv_nsec = 0; 181243730Srwatson error = pthread_cond_timedwait_relative_np(cv, lock, &ts); 182243730Srwatson#else 183243730Srwatson#error Neither pthread_condattr_setclock nor pthread_cond_timedwait_relative_np is available. 184243730Srwatson#endif 185243730Srwatson PJDLOG_ASSERT(error == 0 || error == ETIMEDOUT); 186243730Srwatson return (error == ETIMEDOUT); 187243730Srwatson} 188243730Srwatsonstatic __inline void 189243730Srwatsoncv_signal(pthread_cond_t *cv) 190243730Srwatson{ 191243730Srwatson int error; 192243730Srwatson 193243730Srwatson error = pthread_cond_signal(cv); 194243730Srwatson PJDLOG_ASSERT(error == 0); 195243730Srwatson} 196243730Srwatsonstatic __inline void 197243730Srwatsoncv_broadcast(pthread_cond_t *cv) 198243730Srwatson{ 199243730Srwatson int error; 200243730Srwatson 201243730Srwatson error = pthread_cond_broadcast(cv); 202243730Srwatson PJDLOG_ASSERT(error == 0); 203243730Srwatson} 204243730Srwatson#endif /* !_SYNCH_H_ */ 205