1272343Sngie/* $NetBSD: t_once.c,v 1.1 2010/07/16 15:42:53 jmmv 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_once.c,v 1.1 2010/07/16 15:42:53 jmmv Exp $"); 33272343Sngie 34272343Sngie#include <pthread.h> 35272343Sngie#include <signal.h> 36272343Sngie#include <stdio.h> 37272343Sngie#include <stdlib.h> 38272343Sngie 39272343Sngie#include <atf-c.h> 40272343Sngie 41272343Sngie#include "h_common.h" 42272343Sngie 43272343Sngiestatic pthread_once_t once = PTHREAD_ONCE_INIT; 44272343Sngiestatic pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; 45272343Sngiestatic int x; 46272343Sngie 47272343Sngie#define NTHREADS 25 48272343Sngie 49276478Sngie#ifdef __FreeBSD__ 50276478Sngie#include <sys/time.h> 51276478Sngie#endif 52276478Sngie 53272343Sngiestatic void 54272343Sngieofunc(void) 55272343Sngie{ 56272343Sngie printf("Variable x has value %d\n", x); 57272343Sngie x++; 58272343Sngie} 59272343Sngie 60272343SngieATF_TC(once1); 61272343SngieATF_TC_HEAD(once1, tc) 62272343Sngie{ 63272343Sngie atf_tc_set_md_var(tc, "descr", "Checks pthread_once()"); 64272343Sngie} 65272343SngieATF_TC_BODY(once1, tc) 66272343Sngie{ 67272343Sngie 68272343Sngie printf("1: Test 1 of pthread_once()\n"); 69272343Sngie 70272343Sngie PTHREAD_REQUIRE(pthread_once(&once, ofunc)); 71272343Sngie PTHREAD_REQUIRE(pthread_once(&once, ofunc)); 72272343Sngie 73272343Sngie printf("1: X has value %d\n",x ); 74272343Sngie ATF_REQUIRE_EQ(x, 1); 75272343Sngie} 76272343Sngie 77272343Sngiestatic void 78272343Sngieonce2_ofunc(void) 79272343Sngie{ 80272343Sngie x++; 81272343Sngie printf("ofunc: Variable x has value %d\n", x); 82272343Sngie x++; 83272343Sngie} 84272343Sngie 85272343Sngiestatic void * 86272343Sngieonce2_threadfunc(void *arg) 87272343Sngie{ 88272343Sngie int num; 89272343Sngie 90272343Sngie PTHREAD_REQUIRE(pthread_once(&once, once2_ofunc)); 91272343Sngie 92272343Sngie num = *(int *)arg; 93272343Sngie printf("Thread %d sees x with value %d\n", num, x); 94272343Sngie ATF_REQUIRE_EQ(x, 2); 95272343Sngie 96272343Sngie return NULL; 97272343Sngie} 98272343Sngie 99272343SngieATF_TC(once2); 100272343SngieATF_TC_HEAD(once2, tc) 101272343Sngie{ 102272343Sngie atf_tc_set_md_var(tc, "descr", "Checks pthread_once()"); 103272343Sngie} 104272343SngieATF_TC_BODY(once2, tc) 105272343Sngie{ 106272343Sngie pthread_t threads[NTHREADS]; 107272343Sngie int id[NTHREADS]; 108272343Sngie int i; 109272343Sngie 110272343Sngie printf("1: Test 2 of pthread_once()\n"); 111272343Sngie 112272343Sngie for (i=0; i < NTHREADS; i++) { 113272343Sngie id[i] = i; 114272343Sngie PTHREAD_REQUIRE(pthread_create(&threads[i], NULL, once2_threadfunc, &id[i])); 115272343Sngie } 116272343Sngie 117272343Sngie for (i=0; i < NTHREADS; i++) 118272343Sngie PTHREAD_REQUIRE(pthread_join(threads[i], NULL)); 119272343Sngie 120272343Sngie printf("1: X has value %d\n",x ); 121272343Sngie ATF_REQUIRE_EQ(x, 2); 122272343Sngie} 123272343Sngie 124272343Sngiestatic void 125272343Sngieonce3_cleanup(void *m) 126272343Sngie{ 127272343Sngie pthread_mutex_t *mu = m; 128272343Sngie 129272343Sngie PTHREAD_REQUIRE(pthread_mutex_unlock(mu)); 130272343Sngie} 131272343Sngie 132272343Sngiestatic void 133272343Sngieonce3_ofunc(void) 134272343Sngie{ 135272343Sngie pthread_testcancel(); 136272343Sngie} 137272343Sngie 138272343Sngiestatic void * 139272343Sngieonce3_threadfunc(void *arg) 140272343Sngie{ 141272343Sngie PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 142272343Sngie pthread_cleanup_push(once3_cleanup, &mutex); 143272343Sngie PTHREAD_REQUIRE(pthread_once(&once, once3_ofunc)); 144272343Sngie pthread_cleanup_pop(1); 145272343Sngie 146272343Sngie return NULL; 147272343Sngie} 148272343Sngie 149272343Sngiestatic void 150272343Sngiehandler(int sig, siginfo_t *info, void *ctx) 151272343Sngie{ 152272343Sngie atf_tc_fail("Signal handler was called; " 153272343Sngie "main thread deadlocked in pthread_once()"); 154272343Sngie} 155272343Sngie 156272343SngieATF_TC(once3); 157272343SngieATF_TC_HEAD(once3, tc) 158272343Sngie{ 159272343Sngie atf_tc_set_md_var(tc, "descr", "Checks pthread_once()"); 160272343Sngie} 161272343SngieATF_TC_BODY(once3, tc) 162272343Sngie{ 163272343Sngie pthread_t thread; 164272343Sngie struct sigaction act; 165272343Sngie struct itimerval it; 166272343Sngie printf("Test 3 of pthread_once() (test versus cancellation)\n"); 167272343Sngie 168272343Sngie act.sa_sigaction = handler; 169272343Sngie sigemptyset(&act.sa_mask); 170272343Sngie act.sa_flags = SA_SIGINFO; 171272343Sngie sigaction(SIGALRM, &act, NULL); 172272343Sngie 173272343Sngie timerclear(&it.it_value); 174272343Sngie it.it_value.tv_usec = 500000; 175272343Sngie timerclear(&it.it_interval); 176272343Sngie setitimer(ITIMER_REAL, &it, NULL); 177272343Sngie 178272343Sngie PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 179272343Sngie PTHREAD_REQUIRE(pthread_create(&thread, NULL, once3_threadfunc, NULL)); 180272343Sngie PTHREAD_REQUIRE(pthread_cancel(thread)); 181272343Sngie PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 182272343Sngie PTHREAD_REQUIRE(pthread_join(thread, NULL)); 183272343Sngie 184272343Sngie PTHREAD_REQUIRE(pthread_once(&once, ofunc)); 185272343Sngie 186272343Sngie /* Cancel timer */ 187272343Sngie timerclear(&it.it_value); 188272343Sngie setitimer(ITIMER_REAL, &it, NULL); 189272343Sngie 190272343Sngie printf("Test succeeded\n"); 191272343Sngie} 192272343Sngie 193272343SngieATF_TP_ADD_TCS(tp) 194272343Sngie{ 195272343Sngie ATF_TP_ADD_TC(tp, once1); 196272343Sngie ATF_TP_ADD_TC(tp, once2); 197272343Sngie ATF_TP_ADD_TC(tp, once3); 198272343Sngie 199272343Sngie return atf_no_error(); 200272343Sngie} 201