1 /* $NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __COPYRIGHT("@(#) Copyright (c) 2008\ 31 The NetBSD Foundation, inc. All rights reserved."); 32 __RCSID("$NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $"); 33 34 #include <pthread.h> 35 #include <stdio.h> 36 #include <unistd.h> 37 38 #include <atf-c.h> 39 40 #include "h_common.h" 41 42 #define COUNT 5 43 44 pthread_barrier_t barrier; 45 pthread_mutex_t mutex; 46 int serial_count; 47 int after_barrier_count; 48 49 static void * 50 threadfunc(void *arg) 51 { 52 int which = (int)(long)arg; 53 int rv; 54 55 printf("thread %d entering barrier\n", which); 56 rv = pthread_barrier_wait(&barrier); 57 printf("thread %d leaving barrier -> %d\n", which, rv); 58 59 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 60 after_barrier_count++; 61 if (rv == PTHREAD_BARRIER_SERIAL_THREAD) 62 serial_count++; 63 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 64 65 return NULL; 66 } 67 68 ATF_TC(barrier); 69 ATF_TC_HEAD(barrier, tc) 70 { 71 atf_tc_set_md_var(tc, "descr", "Checks barriers"); 72 } 73 ATF_TC_BODY(barrier, tc) 74 { 75 int i; 76 pthread_t new[COUNT]; 77 void *joinval; 78 79 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 80 PTHREAD_REQUIRE(pthread_barrier_init(&barrier, NULL, COUNT)); 81 82 for (i = 0; i < COUNT; i++) { 83 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 84 ATF_REQUIRE_EQ(after_barrier_count, 0); 85 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 86 PTHREAD_REQUIRE(pthread_create(&new[i], NULL, threadfunc, 87 (void *)(long)i)); 88 sleep(2); 89 } 90 91 for (i = 0; i < COUNT; i++) { 92 PTHREAD_REQUIRE(pthread_join(new[i], &joinval)); 93 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 94 ATF_REQUIRE(after_barrier_count > i); 95 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 96 printf("main joined with thread %d\n", i); 97 } 98 99 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 100 ATF_REQUIRE_EQ(after_barrier_count, COUNT); 101 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 102 ATF_REQUIRE_EQ(serial_count, 1); 103 } 104 105 ATF_TP_ADD_TCS(tp) 106 { 107 ATF_TP_ADD_TC(tp, barrier); 108 109 return atf_no_error(); 110 } 111