1228904Sed/*- 2228904Sed * Copyright (c) 2011 Ed Schouten <ed@FreeBSD.org> 3228904Sed * All rights reserved. 4228904Sed * 5228904Sed * Redistribution and use in source and binary forms, with or without 6228904Sed * modification, are permitted provided that the following conditions 7228904Sed * are met: 8228904Sed * 1. Redistributions of source code must retain the above copyright 9228904Sed * notice, this list of conditions and the following disclaimer. 10228904Sed * 2. Redistributions in binary form must reproduce the above copyright 11228904Sed * notice, this list of conditions and the following disclaimer in the 12228904Sed * documentation and/or other materials provided with the distribution. 13228904Sed * 14228904Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15228904Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16228904Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17228904Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18228904Sed * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19228904Sed * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20228904Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21228904Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22228904Sed * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23228904Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24228904Sed * SUCH DAMAGE. 25228904Sed * 26228904Sed * $FreeBSD$ 27228904Sed */ 28228904Sed 29228904Sed#include <sys/cdefs.h> 30228904Sed__FBSDID("$FreeBSD$"); 31228904Sed 32228904Sed#include <errno.h> 33228904Sed#include <pthread.h> 34228904Sed 35228904Sed#include "threads.h" 36228904Sed 37228904Sedvoid 38228904Sedmtx_destroy(mtx_t *mtx) 39228904Sed{ 40228904Sed 41228904Sed (void)pthread_mutex_destroy(mtx); 42228904Sed} 43228904Sed 44228904Sedint 45228904Sedmtx_init(mtx_t *mtx, int type) 46228904Sed{ 47228904Sed pthread_mutexattr_t attr; 48228904Sed int mt; 49228904Sed 50228904Sed switch (type) { 51228904Sed case mtx_plain: 52228904Sed case mtx_timed: 53228904Sed mt = PTHREAD_MUTEX_NORMAL; 54228904Sed break; 55228904Sed case mtx_plain | mtx_recursive: 56228904Sed case mtx_timed | mtx_recursive: 57228904Sed mt = PTHREAD_MUTEX_RECURSIVE; 58228904Sed break; 59228904Sed default: 60228904Sed return (thrd_error); 61228904Sed } 62228904Sed 63228904Sed if (pthread_mutexattr_init(&attr) != 0) 64228904Sed return (thrd_error); 65228904Sed if (pthread_mutexattr_settype(&attr, mt) != 0) 66228904Sed return (thrd_error); 67228904Sed if (pthread_mutex_init(mtx, &attr) != 0) 68228904Sed return (thrd_error); 69228904Sed return (thrd_success); 70228904Sed} 71228904Sed 72228904Sedint 73228904Sedmtx_lock(mtx_t *mtx) 74228904Sed{ 75228904Sed 76228904Sed if (pthread_mutex_lock(mtx) != 0) 77228904Sed return (thrd_error); 78228904Sed return (thrd_success); 79228904Sed} 80228904Sed 81228904Sedint 82228904Sedmtx_timedlock(mtx_t *restrict mtx, const struct timespec *restrict ts) 83228904Sed{ 84228904Sed 85228904Sed switch (pthread_mutex_timedlock(mtx, ts)) { 86228904Sed case 0: 87228904Sed return (thrd_success); 88228904Sed case ETIMEDOUT: 89228904Sed return (thrd_timedout); 90228904Sed default: 91228904Sed return (thrd_error); 92228904Sed } 93228904Sed} 94228904Sed 95228904Sedint 96228904Sedmtx_trylock(mtx_t *mtx) 97228904Sed{ 98228904Sed 99228904Sed switch (pthread_mutex_lock(mtx)) { 100228904Sed case 0: 101228904Sed return (thrd_success); 102228904Sed case EBUSY: 103228904Sed return (thrd_busy); 104228904Sed default: 105228904Sed return (thrd_error); 106228904Sed } 107228904Sed} 108228904Sed 109228904Sedint 110228904Sedmtx_unlock(mtx_t *mtx) 111228904Sed{ 112228904Sed 113228904Sed if (pthread_mutex_unlock(mtx) != 0) 114228904Sed return (thrd_error); 115228904Sed return (thrd_success); 116228904Sed} 117