1 /* $NetBSD: t_sem.c,v 1.9 2017/01/16 16:22:22 christos 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 1.9 2017/01/16 16:22:22 christos Exp $");
95 #include <semaphore.h>
104 #include "h_common.h"
110 #define SEM_REQUIRE(x) \
111 ATF_REQUIRE_EQ_MSG(x, 0, "%s", strerror(errno))
116 #include <sys/time.h>
120 ATF_TC_HEAD(named, tc)
122 atf_tc_set_md_var(tc, "descr", "Checks named semaphores");
124 ATF_TC_BODY(named, tc)
128 ATF_REQUIRE_MSG(-1 != sysconf(_SC_SEMAPHORES), "%s", strerror(errno));
130 printf("Test begin\n");
132 (void) sem_unlink("/foo");
133 semp = sem_open("/foo", O_CREAT | O_EXCL, 0644, 0);
134 ATF_REQUIRE_MSG(semp != SEM_FAILED, "%s", strerror(errno));
135 SEM_REQUIRE(sem_close(semp));
136 SEM_REQUIRE(sem_unlink("/foo"));
138 printf("Test end\n");
142 ATF_TC_HEAD(unnamed, tc)
144 atf_tc_set_md_var(tc, "descr", "Checks unnamed semaphores");
150 pthread_t self = pthread_self();
151 sem_t *semp = (sem_t *) a_arg;
153 printf("Thread %p waiting for semaphore...\n", self);
155 printf("Thread %p got semaphore\n", self);
160 ATF_TC_BODY(unnamed, tc)
163 pthread_t threads[NTHREADS];
167 ATF_REQUIRE_MSG(-1 != sysconf(_SC_SEMAPHORES), "%s", strerror(errno));
169 printf("Test begin\n");
171 SEM_REQUIRE(sem_init(&sem_b, 0, 0));
172 SEM_REQUIRE(sem_getvalue(&sem_b, &val));
173 ATF_REQUIRE_EQ(0, val);
175 SEM_REQUIRE(sem_post(&sem_b));
176 SEM_REQUIRE(sem_getvalue(&sem_b, &val));
177 ATF_REQUIRE_EQ(1, val);
179 SEM_REQUIRE(sem_wait(&sem_b));
180 ATF_REQUIRE_EQ(sem_trywait(&sem_b), -1);
181 ATF_REQUIRE_EQ(errno, EAGAIN);
182 SEM_REQUIRE(sem_post(&sem_b));
183 SEM_REQUIRE(sem_trywait(&sem_b));
184 SEM_REQUIRE(sem_post(&sem_b));
185 SEM_REQUIRE(sem_wait(&sem_b));
186 SEM_REQUIRE(sem_post(&sem_b));
188 SEM_REQUIRE(sem_destroy(&sem_b));
190 SEM_REQUIRE(sem_init(&sem_a, 0, 0));
192 for (j = 0; j < 2; j++) {
193 for (i = 0; i < NTHREADS; i++) {
194 PTHREAD_REQUIRE(pthread_create(&threads[i], NULL,
195 entry, (void *) &sem_a));
198 for (i = 0; i < NTHREADS; i++) {
200 printf("main loop %u: posting...\n", j+1);
201 SEM_REQUIRE(sem_post(&sem_a));
204 for (i = 0; i < NTHREADS; i++) {
205 PTHREAD_REQUIRE(pthread_join(threads[i], NULL));
209 SEM_REQUIRE(sem_destroy(&sem_a));
211 printf("Test end\n");
215 sighandler(int signo)
217 /* printf("signal %d\n", signo); */
219 ATF_REQUIRE_EQ_MSG(signo, SIGALRM, "unexpected signal");
220 SEM_REQUIRE(sem_post(&sem));
224 alarm_ms(const int ms)
226 struct itimerval timer;
227 timer.it_interval.tv_sec = 0;
228 timer.it_interval.tv_usec = 0;
229 timer.it_value.tv_sec = 0;
230 timer.it_value.tv_usec = ms * 1000;
231 ATF_REQUIRE(setitimer(ITIMER_REAL, &timer, NULL) == 0);
235 threadfunc(void *arg)
239 printf("Entering loop\n");
240 for (i = 0; i < 500; ) {
243 ret = sem_wait(&sem);
244 } while (ret == -1 && errno == EINTR);
245 ATF_REQUIRE(ret == 0);
247 ret = sem_trywait(&sem);
249 ATF_REQUIRE(errno == EAGAIN);
253 printf("%s: %d\n", __func__, i);
262 before_start_test(const bool use_pthread)
266 SEM_REQUIRE(sem_init(&sem, 0, 0));
267 ATF_REQUIRE(SIG_ERR != signal(SIGALRM, sighandler));
272 PTHREAD_REQUIRE(pthread_create(&t, NULL, threadfunc, NULL));
273 PTHREAD_REQUIRE(pthread_join(t, NULL));
279 ATF_TC(before_start_no_threads);
280 ATF_TC_HEAD(before_start_no_threads, tc)
282 atf_tc_set_md_var(tc, "descr", "Checks using semaphores without any "
284 atf_tc_set_md_var(tc, "timeout", "40");
286 ATF_TC_BODY(before_start_no_threads, tc)
288 before_start_test(false);
291 ATF_TC(before_start_one_thread);
292 ATF_TC_HEAD(before_start_one_thread, tc)
294 atf_tc_set_md_var(tc, "descr", "Checks using semaphores before "
295 "starting one thread");
296 atf_tc_set_md_var(tc, "timeout", "40");
298 ATF_TC_BODY(before_start_one_thread, tc)
300 before_start_test(true);
305 ATF_TP_ADD_TC(tp, named);
306 ATF_TP_ADD_TC(tp, unnamed);
307 ATF_TP_ADD_TC(tp, before_start_no_threads);
308 ATF_TP_ADD_TC(tp, before_start_one_thread);
310 return atf_no_error();