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 * 29243734Srwatson * $P4: //depot/projects/trustedbsd/openbsm/bin/auditdistd/synch.h#3 $ 30243730Srwatson */ 31243730Srwatson 32243730Srwatson#ifndef _SYNCH_H_ 33243730Srwatson#define _SYNCH_H_ 34243730Srwatson 35243730Srwatson#include <errno.h> 36243730Srwatson#include <pthread.h> 37243730Srwatson#ifdef HAVE_PTHREAD_NP_H 38243730Srwatson#include <pthread_np.h> 39243730Srwatson#endif 40243730Srwatson#include <stdbool.h> 41243730Srwatson#include <time.h> 42243730Srwatson 43243734Srwatson#include "pjdlog.h" 44243730Srwatson 45243730Srwatson#ifndef PJDLOG_ASSERT 46243730Srwatson#include <assert.h> 47243730Srwatson#define PJDLOG_ASSERT(...) assert(__VA_ARGS__) 48243730Srwatson#endif 49243730Srwatson 50243730Srwatsonstatic __inline void 51243730Srwatsonmtx_init(pthread_mutex_t *lock) 52243730Srwatson{ 53243730Srwatson int error; 54243730Srwatson 55243730Srwatson error = pthread_mutex_init(lock, NULL); 56243730Srwatson PJDLOG_ASSERT(error == 0); 57243730Srwatson} 58243730Srwatsonstatic __inline void 59243730Srwatsonmtx_destroy(pthread_mutex_t *lock) 60243730Srwatson{ 61243730Srwatson int error; 62243730Srwatson 63243730Srwatson error = pthread_mutex_destroy(lock); 64243730Srwatson PJDLOG_ASSERT(error == 0); 65243730Srwatson} 66243730Srwatsonstatic __inline void 67243730Srwatsonmtx_lock(pthread_mutex_t *lock) 68243730Srwatson{ 69243730Srwatson int error; 70243730Srwatson 71243730Srwatson error = pthread_mutex_lock(lock); 72243730Srwatson PJDLOG_ASSERT(error == 0); 73243730Srwatson} 74243730Srwatsonstatic __inline bool 75243730Srwatsonmtx_trylock(pthread_mutex_t *lock) 76243730Srwatson{ 77243730Srwatson int error; 78243730Srwatson 79243730Srwatson error = pthread_mutex_trylock(lock); 80243730Srwatson PJDLOG_ASSERT(error == 0 || error == EBUSY); 81243730Srwatson return (error == 0); 82243730Srwatson} 83243730Srwatsonstatic __inline void 84243730Srwatsonmtx_unlock(pthread_mutex_t *lock) 85243730Srwatson{ 86243730Srwatson int error; 87243730Srwatson 88243730Srwatson error = pthread_mutex_unlock(lock); 89243730Srwatson PJDLOG_ASSERT(error == 0); 90243730Srwatson} 91243730Srwatsonstatic __inline bool 92243730Srwatsonmtx_owned(pthread_mutex_t *lock) 93243730Srwatson{ 94243730Srwatson 95243730Srwatson return (pthread_mutex_isowned_np(lock) != 0); 96243730Srwatson} 97243730Srwatson 98243730Srwatsonstatic __inline void 99243730Srwatsonrw_init(pthread_rwlock_t *lock) 100243730Srwatson{ 101243730Srwatson int error; 102243730Srwatson 103243730Srwatson error = pthread_rwlock_init(lock, NULL); 104243730Srwatson PJDLOG_ASSERT(error == 0); 105243730Srwatson} 106243730Srwatsonstatic __inline void 107243730Srwatsonrw_destroy(pthread_rwlock_t *lock) 108243730Srwatson{ 109243730Srwatson int error; 110243730Srwatson 111243730Srwatson error = pthread_rwlock_destroy(lock); 112243730Srwatson PJDLOG_ASSERT(error == 0); 113243730Srwatson} 114243730Srwatsonstatic __inline void 115243730Srwatsonrw_rlock(pthread_rwlock_t *lock) 116243730Srwatson{ 117243730Srwatson int error; 118243730Srwatson 119243730Srwatson error = pthread_rwlock_rdlock(lock); 120243730Srwatson PJDLOG_ASSERT(error == 0); 121243730Srwatson} 122243730Srwatsonstatic __inline void 123243730Srwatsonrw_wlock(pthread_rwlock_t *lock) 124243730Srwatson{ 125243730Srwatson int error; 126243730Srwatson 127243730Srwatson error = pthread_rwlock_wrlock(lock); 128243730Srwatson PJDLOG_ASSERT(error == 0); 129243730Srwatson} 130243730Srwatsonstatic __inline void 131243730Srwatsonrw_unlock(pthread_rwlock_t *lock) 132243730Srwatson{ 133243730Srwatson int error; 134243730Srwatson 135243730Srwatson error = pthread_rwlock_unlock(lock); 136243730Srwatson PJDLOG_ASSERT(error == 0); 137243730Srwatson} 138243730Srwatson 139243730Srwatsonstatic __inline void 140243730Srwatsoncv_init(pthread_cond_t *cv) 141243730Srwatson{ 142243730Srwatson pthread_condattr_t attr; 143243730Srwatson int error; 144243730Srwatson 145243730Srwatson error = pthread_condattr_init(&attr); 146243730Srwatson PJDLOG_ASSERT(error == 0); 147243730Srwatson#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK 148243730Srwatson error = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC); 149243730Srwatson PJDLOG_ASSERT(error == 0); 150243730Srwatson#endif 151243730Srwatson error = pthread_cond_init(cv, &attr); 152243730Srwatson PJDLOG_ASSERT(error == 0); 153243730Srwatson error = pthread_condattr_destroy(&attr); 154243730Srwatson PJDLOG_ASSERT(error == 0); 155243730Srwatson} 156243730Srwatsonstatic __inline void 157243730Srwatsoncv_wait(pthread_cond_t *cv, pthread_mutex_t *lock) 158243730Srwatson{ 159243730Srwatson int error; 160243730Srwatson 161243730Srwatson error = pthread_cond_wait(cv, lock); 162243730Srwatson PJDLOG_ASSERT(error == 0); 163243730Srwatson} 164243730Srwatsonstatic __inline bool 165243730Srwatsoncv_timedwait(pthread_cond_t *cv, pthread_mutex_t *lock, int timeout) 166243730Srwatson{ 167243730Srwatson struct timespec ts; 168243730Srwatson int error; 169243730Srwatson 170243730Srwatson if (timeout == 0) { 171243730Srwatson cv_wait(cv, lock); 172243730Srwatson return (false); 173243730Srwatson } 174243730Srwatson 175243730Srwatson#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK 176243730Srwatson error = clock_gettime(CLOCK_MONOTONIC, &ts); 177243730Srwatson PJDLOG_ASSERT(error == 0); 178243730Srwatson ts.tv_sec += timeout; 179243730Srwatson error = pthread_cond_timedwait(cv, lock, &ts); 180243730Srwatson#elif HAVE_PTHREAD_COND_TIMEDWAIT_RELATIVE_NP 181243730Srwatson ts.tv_sec = timeout; 182243730Srwatson ts.tv_nsec = 0; 183243730Srwatson error = pthread_cond_timedwait_relative_np(cv, lock, &ts); 184243730Srwatson#else 185243730Srwatson#error Neither pthread_condattr_setclock nor pthread_cond_timedwait_relative_np is available. 186243730Srwatson#endif 187243730Srwatson PJDLOG_ASSERT(error == 0 || error == ETIMEDOUT); 188243730Srwatson return (error == ETIMEDOUT); 189243730Srwatson} 190243730Srwatsonstatic __inline void 191243730Srwatsoncv_signal(pthread_cond_t *cv) 192243730Srwatson{ 193243730Srwatson int error; 194243730Srwatson 195243730Srwatson error = pthread_cond_signal(cv); 196243730Srwatson PJDLOG_ASSERT(error == 0); 197243730Srwatson} 198243730Srwatsonstatic __inline void 199243730Srwatsoncv_broadcast(pthread_cond_t *cv) 200243730Srwatson{ 201243730Srwatson int error; 202243730Srwatson 203243730Srwatson error = pthread_cond_broadcast(cv); 204243730Srwatson PJDLOG_ASSERT(error == 0); 205243730Srwatson} 206243730Srwatson#endif /* !_SYNCH_H_ */ 207