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