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