1272343Sngie/* $NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $ */ 2272343Sngie 3272343Sngie/* 4272343Sngie * Copyright (c) 2008 The NetBSD Foundation, Inc. 5272343Sngie * All rights reserved. 6272343Sngie * 7272343Sngie * Redistribution and use in source and binary forms, with or without 8272343Sngie * modification, are permitted provided that the following conditions 9272343Sngie * are met: 10272343Sngie * 1. Redistributions of source code must retain the above copyright 11272343Sngie * notice, this list of conditions and the following disclaimer. 12272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 13272343Sngie * notice, this list of conditions and the following disclaimer in the 14272343Sngie * documentation and/or other materials provided with the distribution. 15272343Sngie * 16272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17272343Sngie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18272343Sngie * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19272343Sngie * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20272343Sngie * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21272343Sngie * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22272343Sngie * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24272343Sngie * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25272343Sngie * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26272343Sngie * POSSIBILITY OF SUCH DAMAGE. 27272343Sngie */ 28272343Sngie 29272343Sngie#include <sys/cdefs.h> 30272343Sngie__COPYRIGHT("@(#) Copyright (c) 2008\ 31272343Sngie The NetBSD Foundation, inc. All rights reserved."); 32272343Sngie__RCSID("$NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $"); 33272343Sngie 34272343Sngie#include <pthread.h> 35272343Sngie#include <stdio.h> 36272343Sngie#include <unistd.h> 37272343Sngie 38272343Sngie#include <atf-c.h> 39272343Sngie 40272343Sngie#include "h_common.h" 41272343Sngie 42272343Sngie#define COUNT 5 43272343Sngie 44272343Sngiepthread_barrier_t barrier; 45272343Sngiepthread_mutex_t mutex; 46272343Sngieint serial_count; 47272343Sngieint after_barrier_count; 48272343Sngie 49272343Sngiestatic void * 50272343Sngiethreadfunc(void *arg) 51272343Sngie{ 52272343Sngie int which = (int)(long)arg; 53272343Sngie int rv; 54272343Sngie 55272343Sngie printf("thread %d entering barrier\n", which); 56272343Sngie rv = pthread_barrier_wait(&barrier); 57272343Sngie printf("thread %d leaving barrier -> %d\n", which, rv); 58272343Sngie 59272343Sngie PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 60272343Sngie after_barrier_count++; 61272343Sngie if (rv == PTHREAD_BARRIER_SERIAL_THREAD) 62272343Sngie serial_count++; 63272343Sngie PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 64272343Sngie 65272343Sngie return NULL; 66272343Sngie} 67272343Sngie 68272343SngieATF_TC(barrier); 69272343SngieATF_TC_HEAD(barrier, tc) 70272343Sngie{ 71272343Sngie atf_tc_set_md_var(tc, "descr", "Checks barriers"); 72272343Sngie} 73272343SngieATF_TC_BODY(barrier, tc) 74272343Sngie{ 75272343Sngie int i; 76272343Sngie pthread_t new[COUNT]; 77272343Sngie void *joinval; 78272343Sngie 79272343Sngie PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 80272343Sngie PTHREAD_REQUIRE(pthread_barrier_init(&barrier, NULL, COUNT)); 81272343Sngie 82272343Sngie for (i = 0; i < COUNT; i++) { 83272343Sngie PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 84272343Sngie ATF_REQUIRE_EQ(after_barrier_count, 0); 85272343Sngie PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 86272343Sngie PTHREAD_REQUIRE(pthread_create(&new[i], NULL, threadfunc, 87272343Sngie (void *)(long)i)); 88272343Sngie sleep(2); 89272343Sngie } 90272343Sngie 91272343Sngie for (i = 0; i < COUNT; i++) { 92272343Sngie PTHREAD_REQUIRE(pthread_join(new[i], &joinval)); 93272343Sngie PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 94272343Sngie ATF_REQUIRE(after_barrier_count > i); 95272343Sngie PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 96272343Sngie printf("main joined with thread %d\n", i); 97272343Sngie } 98272343Sngie 99272343Sngie PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 100272343Sngie ATF_REQUIRE_EQ(after_barrier_count, COUNT); 101272343Sngie PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 102272343Sngie ATF_REQUIRE_EQ(serial_count, 1); 103272343Sngie} 104272343Sngie 105272343SngieATF_TP_ADD_TCS(tp) 106272343Sngie{ 107272343Sngie ATF_TP_ADD_TC(tp, barrier); 108272343Sngie 109272343Sngie return atf_no_error(); 110272343Sngie} 111