1 /* $NetBSD: t_sem.c,v 1.8 2014/11/04 00:20:19 justin Exp $ */
4 * Copyright (c) 2008, 2010 The NetBSD Foundation, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
30 * Copyright (c)2004 YAMAMOTO Takashi,
31 * All rights reserved.
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
42 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 /****************************************************************************
57 * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
58 * All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
63 * 1. Redistributions of source code must retain the above copyright
64 * notice(s), this list of conditions and the following disclaimer as
65 * the first lines of this file unmodified other than the possible
66 * addition of one or more copyright notices.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice(s), this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
73 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
74 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
75 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
76 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
77 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
78 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
79 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
80 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
81 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
82 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
84 ****************************************************************************/
86 #include <sys/cdefs.h>
87 __COPYRIGHT("@(#) Copyright (c) 2008, 2010\
88 The NetBSD Foundation, inc. All rights reserved.");
89 __RCSID("$NetBSD: t_sem.c,v 1.8 2014/11/04 00:20:19 justin Exp $");
94 #include <semaphore.h>
103 #include "h_common.h"
109 #define SEM_REQUIRE(x) \
110 ATF_REQUIRE_EQ_MSG(x, 0, "%s", strerror(errno))
115 #include <sys/time.h>
119 ATF_TC_HEAD(named, tc)
121 atf_tc_set_md_var(tc, "descr", "Checks named semaphores");
123 ATF_TC_BODY(named, tc)
127 ATF_REQUIRE_MSG(-1 != sysconf(_SC_SEMAPHORES), "%s", strerror(errno));
129 printf("Test begin\n");
131 (void) sem_unlink("/foo");
132 semp = sem_open("/foo", O_CREAT | O_EXCL, 0644, 0);
133 ATF_REQUIRE_MSG(semp != SEM_FAILED, "%s", strerror(errno));
134 SEM_REQUIRE(sem_close(semp));
135 SEM_REQUIRE(sem_unlink("/foo"));
137 printf("Test end\n");
141 ATF_TC_HEAD(unnamed, tc)
143 atf_tc_set_md_var(tc, "descr", "Checks unnamed semaphores");
149 pthread_t self = pthread_self();
150 sem_t *semp = (sem_t *) a_arg;
152 printf("Thread %p waiting for semaphore...\n", self);
154 printf("Thread %p got semaphore\n", self);
159 ATF_TC_BODY(unnamed, tc)
162 pthread_t threads[NTHREADS];
166 ATF_REQUIRE_MSG(-1 != sysconf(_SC_SEMAPHORES), "%s", strerror(errno));
168 printf("Test begin\n");
170 SEM_REQUIRE(sem_init(&sem_b, 0, 0));
171 SEM_REQUIRE(sem_getvalue(&sem_b, &val));
172 ATF_REQUIRE_EQ(0, val);
174 SEM_REQUIRE(sem_post(&sem_b));
175 SEM_REQUIRE(sem_getvalue(&sem_b, &val));
176 ATF_REQUIRE_EQ(1, val);
178 SEM_REQUIRE(sem_wait(&sem_b));
179 ATF_REQUIRE_EQ(sem_trywait(&sem_b), -1);
180 ATF_REQUIRE_EQ(errno, EAGAIN);
181 SEM_REQUIRE(sem_post(&sem_b));
182 SEM_REQUIRE(sem_trywait(&sem_b));
183 SEM_REQUIRE(sem_post(&sem_b));
184 SEM_REQUIRE(sem_wait(&sem_b));
185 SEM_REQUIRE(sem_post(&sem_b));
187 SEM_REQUIRE(sem_destroy(&sem_b));
189 SEM_REQUIRE(sem_init(&sem_a, 0, 0));
191 for (j = 0; j < 2; j++) {
192 for (i = 0; i < NTHREADS; i++) {
193 PTHREAD_REQUIRE(pthread_create(&threads[i], NULL,
194 entry, (void *) &sem_a));
197 for (i = 0; i < NTHREADS; i++) {
199 printf("main loop %u: posting...\n", j+1);
200 SEM_REQUIRE(sem_post(&sem_a));
203 for (i = 0; i < NTHREADS; i++) {
204 PTHREAD_REQUIRE(pthread_join(threads[i], NULL));
208 SEM_REQUIRE(sem_destroy(&sem_a));
210 printf("Test end\n");
214 sighandler(int signo)
216 /* printf("signal %d\n", signo); */
218 ATF_REQUIRE_EQ_MSG(signo, SIGALRM, "unexpected signal");
219 SEM_REQUIRE(sem_post(&sem));
223 alarm_ms(const int ms)
225 struct itimerval timer;
226 timer.it_interval.tv_sec = 0;
227 timer.it_interval.tv_usec = 0;
228 timer.it_value.tv_sec = 0;
229 timer.it_value.tv_usec = ms * 1000;
230 ATF_REQUIRE(setitimer(ITIMER_REAL, &timer, NULL) == 0);
234 threadfunc(void *arg)
238 printf("Entering loop\n");
239 for (i = 0; i < 500; ) {
242 ret = sem_wait(&sem);
243 } while (ret == -1 && errno == EINTR);
244 ATF_REQUIRE(ret == 0);
246 ret = sem_trywait(&sem);
248 ATF_REQUIRE(errno == EAGAIN);
252 printf("%s: %d\n", __func__, i);
261 before_start_test(const bool use_pthread)
265 SEM_REQUIRE(sem_init(&sem, 0, 0));
266 ATF_REQUIRE(SIG_ERR != signal(SIGALRM, sighandler));
271 PTHREAD_REQUIRE(pthread_create(&t, NULL, threadfunc, NULL));
272 PTHREAD_REQUIRE(pthread_join(t, NULL));
278 ATF_TC(before_start_no_threads);
279 ATF_TC_HEAD(before_start_no_threads, tc)
281 atf_tc_set_md_var(tc, "descr", "Checks using semaphores without any "
283 atf_tc_set_md_var(tc, "timeout", "40");
285 ATF_TC_BODY(before_start_no_threads, tc)
287 before_start_test(false);
290 ATF_TC(before_start_one_thread);
291 ATF_TC_HEAD(before_start_one_thread, tc)
293 atf_tc_set_md_var(tc, "descr", "Checks using semaphores before "
294 "starting one thread");
295 atf_tc_set_md_var(tc, "timeout", "40");
297 ATF_TC_BODY(before_start_one_thread, tc)
299 before_start_test(true);
304 ATF_TP_ADD_TC(tp, named);
305 ATF_TP_ADD_TC(tp, unnamed);
306 ATF_TP_ADD_TC(tp, before_start_no_threads);
307 ATF_TP_ADD_TC(tp, before_start_one_thread);
309 return atf_no_error();