1 /* $NetBSD: t_once.c,v 1.1 2010/07/16 15:42:53 jmmv 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_once.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $"); 33 34 #include <pthread.h> 35 #include <signal.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 39 #include <atf-c.h> 40 41 #include "h_common.h" 42 43 static pthread_once_t once = PTHREAD_ONCE_INIT; 44 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; 45 static int x; 46 47 #define NTHREADS 25 48 49 #ifdef __FreeBSD__ 50 #include <sys/time.h> 51 #endif 52 53 static void 54 ofunc(void) 55 { 56 printf("Variable x has value %d\n", x); 57 x++; 58 } 59 60 ATF_TC(once1); 61 ATF_TC_HEAD(once1, tc) 62 { 63 atf_tc_set_md_var(tc, "descr", "Checks pthread_once()"); 64 } 65 ATF_TC_BODY(once1, tc) 66 { 67 68 printf("1: Test 1 of pthread_once()\n"); 69 70 PTHREAD_REQUIRE(pthread_once(&once, ofunc)); 71 PTHREAD_REQUIRE(pthread_once(&once, ofunc)); 72 73 printf("1: X has value %d\n",x ); 74 ATF_REQUIRE_EQ(x, 1); 75 } 76 77 static void 78 once2_ofunc(void) 79 { 80 x++; 81 printf("ofunc: Variable x has value %d\n", x); 82 x++; 83 } 84 85 static void * 86 once2_threadfunc(void *arg) 87 { 88 int num; 89 90 PTHREAD_REQUIRE(pthread_once(&once, once2_ofunc)); 91 92 num = *(int *)arg; 93 printf("Thread %d sees x with value %d\n", num, x); 94 ATF_REQUIRE_EQ(x, 2); 95 96 return NULL; 97 } 98 99 ATF_TC(once2); 100 ATF_TC_HEAD(once2, tc) 101 { 102 atf_tc_set_md_var(tc, "descr", "Checks pthread_once()"); 103 } 104 ATF_TC_BODY(once2, tc) 105 { 106 pthread_t threads[NTHREADS]; 107 int id[NTHREADS]; 108 int i; 109 110 printf("1: Test 2 of pthread_once()\n"); 111 112 for (i=0; i < NTHREADS; i++) { 113 id[i] = i; 114 PTHREAD_REQUIRE(pthread_create(&threads[i], NULL, once2_threadfunc, &id[i])); 115 } 116 117 for (i=0; i < NTHREADS; i++) 118 PTHREAD_REQUIRE(pthread_join(threads[i], NULL)); 119 120 printf("1: X has value %d\n",x ); 121 ATF_REQUIRE_EQ(x, 2); 122 } 123 124 static void 125 once3_cleanup(void *m) 126 { 127 pthread_mutex_t *mu = m; 128 129 PTHREAD_REQUIRE(pthread_mutex_unlock(mu)); 130 } 131 132 static void 133 once3_ofunc(void) 134 { 135 pthread_testcancel(); 136 } 137 138 static void * 139 once3_threadfunc(void *arg) 140 { 141 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 142 pthread_cleanup_push(once3_cleanup, &mutex); 143 PTHREAD_REQUIRE(pthread_once(&once, once3_ofunc)); 144 pthread_cleanup_pop(1); 145 146 return NULL; 147 } 148 149 static void 150 handler(int sig, siginfo_t *info, void *ctx) 151 { 152 atf_tc_fail("Signal handler was called; " 153 "main thread deadlocked in pthread_once()"); 154 } 155 156 ATF_TC(once3); 157 ATF_TC_HEAD(once3, tc) 158 { 159 atf_tc_set_md_var(tc, "descr", "Checks pthread_once()"); 160 } 161 ATF_TC_BODY(once3, tc) 162 { 163 pthread_t thread; 164 struct sigaction act; 165 struct itimerval it; 166 printf("Test 3 of pthread_once() (test versus cancellation)\n"); 167 168 act.sa_sigaction = handler; 169 sigemptyset(&act.sa_mask); 170 act.sa_flags = SA_SIGINFO; 171 sigaction(SIGALRM, &act, NULL); 172 173 timerclear(&it.it_value); 174 it.it_value.tv_usec = 500000; 175 timerclear(&it.it_interval); 176 setitimer(ITIMER_REAL, &it, NULL); 177 178 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 179 PTHREAD_REQUIRE(pthread_create(&thread, NULL, once3_threadfunc, NULL)); 180 PTHREAD_REQUIRE(pthread_cancel(thread)); 181 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 182 PTHREAD_REQUIRE(pthread_join(thread, NULL)); 183 184 PTHREAD_REQUIRE(pthread_once(&once, ofunc)); 185 186 /* Cancel timer */ 187 timerclear(&it.it_value); 188 setitimer(ITIMER_REAL, &it, NULL); 189 190 printf("Test succeeded\n"); 191 } 192 193 ATF_TP_ADD_TCS(tp) 194 { 195 ATF_TP_ADD_TC(tp, once1); 196 ATF_TP_ADD_TC(tp, once2); 197 ATF_TP_ADD_TC(tp, once3); 198 199 return atf_no_error(); 200 } 201