308 lines
8.8 KiB
C
308 lines
8.8 KiB
C
/* $NetBSD: t_sem.c,v 1.9 2017/01/16 16:22:22 christos 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)2004 YAMAMOTO Takashi,
|
|
* 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 AUTHOR 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 AUTHOR 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 1.9 2017/01/16 16:22:22 christos Exp $");
|
|
|
|
#include <sys/time.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <pthread.h>
|
|
#include <semaphore.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <atf-c.h>
|
|
|
|
#include "h_common.h"
|
|
|
|
#define NTHREADS 10
|
|
|
|
#define _LIBC_R_
|
|
|
|
#define SEM_REQUIRE(x) \
|
|
ATF_REQUIRE_EQ_MSG(x, 0, "%s", strerror(errno))
|
|
|
|
static sem_t sem;
|
|
|
|
ATF_TC(named);
|
|
ATF_TC_HEAD(named, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr", "Checks named semaphores");
|
|
}
|
|
ATF_TC_BODY(named, tc)
|
|
{
|
|
sem_t *semp;
|
|
|
|
ATF_REQUIRE_MSG(-1 != sysconf(_SC_SEMAPHORES), "%s", strerror(errno));
|
|
|
|
printf("Test begin\n");
|
|
|
|
(void) sem_unlink("/foo");
|
|
semp = sem_open("/foo", O_CREAT | O_EXCL, 0644, 0);
|
|
ATF_REQUIRE_MSG(semp != SEM_FAILED, "%s", strerror(errno));
|
|
SEM_REQUIRE(sem_close(semp));
|
|
SEM_REQUIRE(sem_unlink("/foo"));
|
|
|
|
printf("Test end\n");
|
|
}
|
|
|
|
ATF_TC(unnamed);
|
|
ATF_TC_HEAD(unnamed, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr", "Checks unnamed semaphores");
|
|
}
|
|
|
|
static void *
|
|
entry(void * a_arg)
|
|
{
|
|
pthread_t self = pthread_self();
|
|
sem_t *semp = (sem_t *) a_arg;
|
|
|
|
printf("Thread %p waiting for semaphore...\n", self);
|
|
sem_wait(semp);
|
|
printf("Thread %p got semaphore\n", self);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
ATF_TC_BODY(unnamed, tc)
|
|
{
|
|
sem_t sem_a, sem_b;
|
|
pthread_t threads[NTHREADS];
|
|
unsigned i, j;
|
|
int val;
|
|
|
|
ATF_REQUIRE_MSG(-1 != sysconf(_SC_SEMAPHORES), "%s", strerror(errno));
|
|
|
|
printf("Test begin\n");
|
|
|
|
SEM_REQUIRE(sem_init(&sem_b, 0, 0));
|
|
SEM_REQUIRE(sem_getvalue(&sem_b, &val));
|
|
ATF_REQUIRE_EQ(0, val);
|
|
|
|
SEM_REQUIRE(sem_post(&sem_b));
|
|
SEM_REQUIRE(sem_getvalue(&sem_b, &val));
|
|
ATF_REQUIRE_EQ(1, val);
|
|
|
|
SEM_REQUIRE(sem_wait(&sem_b));
|
|
ATF_REQUIRE_EQ(sem_trywait(&sem_b), -1);
|
|
ATF_REQUIRE_EQ(errno, EAGAIN);
|
|
SEM_REQUIRE(sem_post(&sem_b));
|
|
SEM_REQUIRE(sem_trywait(&sem_b));
|
|
SEM_REQUIRE(sem_post(&sem_b));
|
|
SEM_REQUIRE(sem_wait(&sem_b));
|
|
SEM_REQUIRE(sem_post(&sem_b));
|
|
|
|
SEM_REQUIRE(sem_destroy(&sem_b));
|
|
|
|
SEM_REQUIRE(sem_init(&sem_a, 0, 0));
|
|
|
|
for (j = 0; j < 2; j++) {
|
|
for (i = 0; i < NTHREADS; i++) {
|
|
PTHREAD_REQUIRE(pthread_create(&threads[i], NULL,
|
|
entry, (void *) &sem_a));
|
|
}
|
|
|
|
for (i = 0; i < NTHREADS; i++) {
|
|
usleep(10000);
|
|
printf("main loop %u: posting...\n", j+1);
|
|
SEM_REQUIRE(sem_post(&sem_a));
|
|
}
|
|
|
|
for (i = 0; i < NTHREADS; i++) {
|
|
PTHREAD_REQUIRE(pthread_join(threads[i], NULL));
|
|
}
|
|
}
|
|
|
|
SEM_REQUIRE(sem_destroy(&sem_a));
|
|
|
|
printf("Test end\n");
|
|
}
|
|
|
|
static void
|
|
sighandler(int signo)
|
|
{
|
|
/* printf("signal %d\n", signo); */
|
|
|
|
ATF_REQUIRE_EQ_MSG(signo, SIGALRM, "unexpected signal");
|
|
SEM_REQUIRE(sem_post(&sem));
|
|
}
|
|
|
|
static void
|
|
alarm_ms(const int ms)
|
|
{
|
|
struct itimerval timer;
|
|
timer.it_interval.tv_sec = 0;
|
|
timer.it_interval.tv_usec = 0;
|
|
timer.it_value.tv_sec = 0;
|
|
timer.it_value.tv_usec = ms * 1000;
|
|
ATF_REQUIRE(setitimer(ITIMER_REAL, &timer, NULL) == 0);
|
|
}
|
|
|
|
static void *
|
|
threadfunc(void *arg)
|
|
{
|
|
int i, ret;
|
|
|
|
printf("Entering loop\n");
|
|
for (i = 0; i < 500; ) {
|
|
if ((i & 1) != 0) {
|
|
do {
|
|
ret = sem_wait(&sem);
|
|
} while (ret == -1 && errno == EINTR);
|
|
ATF_REQUIRE(ret == 0);
|
|
} else {
|
|
ret = sem_trywait(&sem);
|
|
if (ret == -1) {
|
|
ATF_REQUIRE(errno == EAGAIN);
|
|
continue;
|
|
}
|
|
}
|
|
printf("%s: %d\n", __func__, i);
|
|
alarm_ms(5);
|
|
i++;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
before_start_test(const bool use_pthread)
|
|
{
|
|
pthread_t t;
|
|
|
|
SEM_REQUIRE(sem_init(&sem, 0, 0));
|
|
ATF_REQUIRE(SIG_ERR != signal(SIGALRM, sighandler));
|
|
|
|
alarm_ms(5);
|
|
|
|
if (use_pthread) {
|
|
PTHREAD_REQUIRE(pthread_create(&t, NULL, threadfunc, NULL));
|
|
PTHREAD_REQUIRE(pthread_join(t, NULL));
|
|
} else {
|
|
threadfunc(NULL);
|
|
}
|
|
}
|
|
|
|
ATF_TC(before_start_no_threads);
|
|
ATF_TC_HEAD(before_start_no_threads, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr", "Checks using semaphores without any "
|
|
"thread running");
|
|
atf_tc_set_md_var(tc, "timeout", "40");
|
|
}
|
|
ATF_TC_BODY(before_start_no_threads, tc)
|
|
{
|
|
before_start_test(false);
|
|
}
|
|
|
|
ATF_TC(before_start_one_thread);
|
|
ATF_TC_HEAD(before_start_one_thread, tc)
|
|
{
|
|
atf_tc_set_md_var(tc, "descr", "Checks using semaphores before "
|
|
"starting one thread");
|
|
atf_tc_set_md_var(tc, "timeout", "40");
|
|
}
|
|
ATF_TC_BODY(before_start_one_thread, tc)
|
|
{
|
|
before_start_test(true);
|
|
}
|
|
|
|
ATF_TP_ADD_TCS(tp)
|
|
{
|
|
ATF_TP_ADD_TC(tp, named);
|
|
ATF_TP_ADD_TC(tp, unnamed);
|
|
ATF_TP_ADD_TC(tp, before_start_no_threads);
|
|
ATF_TP_ADD_TC(tp, before_start_one_thread);
|
|
|
|
return atf_no_error();
|
|
}
|