synch.h revision 243730
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 * $P4: //depot/projects/trustedbsd/openbsm/bin/auditdistd/synch.h#1 $ 30243730Srwatson */ 31243730Srwatson 32243730Srwatson#ifndef _SYNCH_H_ 33243730Srwatson#define _SYNCH_H_ 34243730Srwatson 35243730Srwatson#ifdef HAVE_CONFIG_H 36243730Srwatson#include "config.h" 37243730Srwatson#endif 38243730Srwatson 39243730Srwatson#include <errno.h> 40243730Srwatson#include <pthread.h> 41243730Srwatson#ifdef HAVE_PTHREAD_NP_H 42243730Srwatson#include <pthread_np.h> 43243730Srwatson#endif 44243730Srwatson#include <stdbool.h> 45243730Srwatson#include <time.h> 46243730Srwatson 47243730Srwatson#include <pjdlog.h> 48243730Srwatson 49243730Srwatson#ifndef PJDLOG_ASSERT 50243730Srwatson#include <assert.h> 51243730Srwatson#define PJDLOG_ASSERT(...) assert(__VA_ARGS__) 52243730Srwatson#endif 53243730Srwatson 54243730Srwatsonstatic __inline void 55243730Srwatsonmtx_init(pthread_mutex_t *lock) 56243730Srwatson{ 57243730Srwatson int error; 58243730Srwatson 59243730Srwatson error = pthread_mutex_init(lock, NULL); 60243730Srwatson PJDLOG_ASSERT(error == 0); 61243730Srwatson} 62243730Srwatsonstatic __inline void 63243730Srwatsonmtx_destroy(pthread_mutex_t *lock) 64243730Srwatson{ 65243730Srwatson int error; 66243730Srwatson 67243730Srwatson error = pthread_mutex_destroy(lock); 68243730Srwatson PJDLOG_ASSERT(error == 0); 69243730Srwatson} 70243730Srwatsonstatic __inline void 71243730Srwatsonmtx_lock(pthread_mutex_t *lock) 72243730Srwatson{ 73243730Srwatson int error; 74243730Srwatson 75243730Srwatson error = pthread_mutex_lock(lock); 76243730Srwatson PJDLOG_ASSERT(error == 0); 77243730Srwatson} 78243730Srwatsonstatic __inline bool 79243730Srwatsonmtx_trylock(pthread_mutex_t *lock) 80243730Srwatson{ 81243730Srwatson int error; 82243730Srwatson 83243730Srwatson error = pthread_mutex_trylock(lock); 84243730Srwatson PJDLOG_ASSERT(error == 0 || error == EBUSY); 85243730Srwatson return (error == 0); 86243730Srwatson} 87243730Srwatsonstatic __inline void 88243730Srwatsonmtx_unlock(pthread_mutex_t *lock) 89243730Srwatson{ 90243730Srwatson int error; 91243730Srwatson 92243730Srwatson error = pthread_mutex_unlock(lock); 93243730Srwatson PJDLOG_ASSERT(error == 0); 94243730Srwatson} 95243730Srwatsonstatic __inline bool 96243730Srwatsonmtx_owned(pthread_mutex_t *lock) 97243730Srwatson{ 98243730Srwatson 99243730Srwatson return (pthread_mutex_isowned_np(lock) != 0); 100243730Srwatson} 101243730Srwatson 102243730Srwatsonstatic __inline void 103243730Srwatsonrw_init(pthread_rwlock_t *lock) 104243730Srwatson{ 105243730Srwatson int error; 106243730Srwatson 107243730Srwatson error = pthread_rwlock_init(lock, NULL); 108243730Srwatson PJDLOG_ASSERT(error == 0); 109243730Srwatson} 110243730Srwatsonstatic __inline void 111243730Srwatsonrw_destroy(pthread_rwlock_t *lock) 112243730Srwatson{ 113243730Srwatson int error; 114243730Srwatson 115243730Srwatson error = pthread_rwlock_destroy(lock); 116243730Srwatson PJDLOG_ASSERT(error == 0); 117243730Srwatson} 118243730Srwatsonstatic __inline void 119243730Srwatsonrw_rlock(pthread_rwlock_t *lock) 120243730Srwatson{ 121243730Srwatson int error; 122243730Srwatson 123243730Srwatson error = pthread_rwlock_rdlock(lock); 124243730Srwatson PJDLOG_ASSERT(error == 0); 125243730Srwatson} 126243730Srwatsonstatic __inline void 127243730Srwatsonrw_wlock(pthread_rwlock_t *lock) 128243730Srwatson{ 129243730Srwatson int error; 130243730Srwatson 131243730Srwatson error = pthread_rwlock_wrlock(lock); 132243730Srwatson PJDLOG_ASSERT(error == 0); 133243730Srwatson} 134243730Srwatsonstatic __inline void 135243730Srwatsonrw_unlock(pthread_rwlock_t *lock) 136243730Srwatson{ 137243730Srwatson int error; 138243730Srwatson 139243730Srwatson error = pthread_rwlock_unlock(lock); 140243730Srwatson PJDLOG_ASSERT(error == 0); 141243730Srwatson} 142243730Srwatson 143243730Srwatsonstatic __inline void 144243730Srwatsoncv_init(pthread_cond_t *cv) 145243730Srwatson{ 146243730Srwatson pthread_condattr_t attr; 147243730Srwatson int error; 148243730Srwatson 149243730Srwatson error = pthread_condattr_init(&attr); 150243730Srwatson PJDLOG_ASSERT(error == 0); 151243730Srwatson#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK 152243730Srwatson error = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC); 153243730Srwatson PJDLOG_ASSERT(error == 0); 154243730Srwatson#endif 155243730Srwatson error = pthread_cond_init(cv, &attr); 156243730Srwatson PJDLOG_ASSERT(error == 0); 157243730Srwatson error = pthread_condattr_destroy(&attr); 158243730Srwatson PJDLOG_ASSERT(error == 0); 159243730Srwatson} 160243730Srwatsonstatic __inline void 161243730Srwatsoncv_wait(pthread_cond_t *cv, pthread_mutex_t *lock) 162243730Srwatson{ 163243730Srwatson int error; 164243730Srwatson 165243730Srwatson error = pthread_cond_wait(cv, lock); 166243730Srwatson PJDLOG_ASSERT(error == 0); 167243730Srwatson} 168243730Srwatsonstatic __inline bool 169243730Srwatsoncv_timedwait(pthread_cond_t *cv, pthread_mutex_t *lock, int timeout) 170243730Srwatson{ 171243730Srwatson struct timespec ts; 172243730Srwatson int error; 173243730Srwatson 174243730Srwatson if (timeout == 0) { 175243730Srwatson cv_wait(cv, lock); 176243730Srwatson return (false); 177243730Srwatson } 178243730Srwatson 179243730Srwatson#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK 180243730Srwatson error = clock_gettime(CLOCK_MONOTONIC, &ts); 181243730Srwatson PJDLOG_ASSERT(error == 0); 182243730Srwatson ts.tv_sec += timeout; 183243730Srwatson error = pthread_cond_timedwait(cv, lock, &ts); 184243730Srwatson#elif HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE_NP 185243730Srwatson ts.tv_sec = timeout; 186243730Srwatson ts.tv_nsec = 0; 187243730Srwatson error = pthread_cond_timedwait_relative_np(cv, lock, &ts); 188243730Srwatson#else 189243730Srwatson#error Neither pthread_condattr_setclock nor pthread_cond_timedwait_relative_np is available. 190243730Srwatson#endif 191243730Srwatson PJDLOG_ASSERT(error == 0 || error == ETIMEDOUT); 192243730Srwatson return (error == ETIMEDOUT); 193243730Srwatson} 194243730Srwatsonstatic __inline void 195243730Srwatsoncv_signal(pthread_cond_t *cv) 196243730Srwatson{ 197243730Srwatson int error; 198243730Srwatson 199243730Srwatson error = pthread_cond_signal(cv); 200243730Srwatson PJDLOG_ASSERT(error == 0); 201243730Srwatson} 202243730Srwatsonstatic __inline void 203243730Srwatsoncv_broadcast(pthread_cond_t *cv) 204243730Srwatson{ 205243730Srwatson int error; 206243730Srwatson 207243730Srwatson error = pthread_cond_broadcast(cv); 208243730Srwatson PJDLOG_ASSERT(error == 0); 209243730Srwatson} 210243730Srwatson#endif /* !_SYNCH_H_ */ 211