diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/librt/t_sem.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/librt/t_sem.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/librt/t_sem.c b/contrib/netbsd-tests/lib/librt/t_sem.c new file mode 100644 index 0000000..b6fc4db --- /dev/null +++ b/contrib/netbsd-tests/lib/librt/t_sem.c @@ -0,0 +1,175 @@ +/* $NetBSD: t_sem.c,v 1.2 2010/11/08 13:05:49 njoly Exp $ */ + +/* + * Copyright (c) 2008, 2010 The NetBSD Foundation, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice(s), this list of conditions and the following disclaimer as + * the first lines of this file unmodified other than the possible + * addition of one or more copyright notices. + * 2. Redistributions in binary form must reproduce the above copyright + * notice(s), this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__COPYRIGHT("@(#) Copyright (c) 2008, 2010\ + The NetBSD Foundation, inc. All rights reserved."); +__RCSID("$NetBSD: t_sem.c,v 1.2 2010/11/08 13:05:49 njoly Exp $"); + +#include <sys/wait.h> + +#include <errno.h> +#include <fcntl.h> +#include <semaphore.h> +#include <stdio.h> +#include <unistd.h> + +#include <atf-c.h> + +#define NCHILDREN 10 + +ATF_TC(basic); +ATF_TC_HEAD(basic, tc) +{ + atf_tc_set_md_var(tc, "descr", "Checks basic functionality of POSIX " + "semaphores"); +} +ATF_TC_BODY(basic, tc) +{ + int val; + sem_t *sem_b; + + if (sysconf(_SC_SEMAPHORES) == -1) + atf_tc_skip("POSIX semaphores not supported"); + + sem_b = sem_open("/sem_b", O_CREAT | O_EXCL, 0644, 0); + ATF_REQUIRE(sem_b != SEM_FAILED); + + ATF_REQUIRE_EQ(sem_getvalue(sem_b, &val), 0); + ATF_REQUIRE_EQ(val, 0); + + ATF_REQUIRE_EQ(sem_post(sem_b), 0); + ATF_REQUIRE_EQ(sem_getvalue(sem_b, &val), 0); + ATF_REQUIRE_EQ(val, 1); + + ATF_REQUIRE_EQ(sem_wait(sem_b), 0); + ATF_REQUIRE_EQ(sem_trywait(sem_b), -1); + ATF_REQUIRE_EQ(errno, EAGAIN); + ATF_REQUIRE_EQ(sem_post(sem_b), 0); + ATF_REQUIRE_EQ(sem_trywait(sem_b), 0); + ATF_REQUIRE_EQ(sem_post(sem_b), 0); + ATF_REQUIRE_EQ(sem_wait(sem_b), 0); + ATF_REQUIRE_EQ(sem_post(sem_b), 0); + + ATF_REQUIRE_EQ(sem_close(sem_b), 0); + ATF_REQUIRE_EQ(sem_unlink("/sem_b"), 0); +} + +ATF_TC(child); +ATF_TC_HEAD(child, tc) +{ + atf_tc_set_md_var(tc, "descr", "Checks using semaphores to synchronize " + "parent with multiple child processes"); +} +ATF_TC_BODY(child, tc) +{ + pid_t children[NCHILDREN]; + unsigned i, j; + sem_t *sem_a; + int status; + + pid_t pid; + + if (sysconf(_SC_SEMAPHORES) == -1) + atf_tc_skip("POSIX semaphores not supported"); + + sem_a = sem_open("/sem_a", O_CREAT | O_EXCL, 0644, 0); + ATF_REQUIRE(sem_a != SEM_FAILED); + + for (j = 1; j <= 2; j++) { + for (i = 0; i < NCHILDREN; i++) { + switch ((pid = fork())) { + case -1: + atf_tc_fail("fork() returned -1"); + case 0: + printf("PID %d waiting for semaphore...\n", + getpid()); + ATF_REQUIRE_MSG(sem_wait(sem_a) == 0, + "sem_wait failed; iteration %d", j); + printf("PID %d got semaphore\n", getpid()); + _exit(0); + default: + children[i] = pid; + break; + } + } + + for (i = 0; i < NCHILDREN; i++) { + sleep(1); + printf("main loop %d: posting...\n", j); + ATF_REQUIRE_EQ(sem_post(sem_a), 0); + } + + for (i = 0; i < NCHILDREN; i++) { + ATF_REQUIRE_EQ(waitpid(children[i], &status, 0), children[i]); + ATF_REQUIRE(WIFEXITED(status)); + ATF_REQUIRE_EQ(WEXITSTATUS(status), 0); + } + } + + ATF_REQUIRE_EQ(sem_close(sem_a), 0); + ATF_REQUIRE_EQ(sem_unlink("/sem_a"), 0); +} + +ATF_TP_ADD_TCS(tp) +{ + + ATF_TP_ADD_TC(tp, basic); + ATF_TP_ADD_TC(tp, child); + + return atf_no_error(); +} |
