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/* $NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $ */
/*
* Copyright (c) 2008 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.
*/
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $");
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include <atf-c.h>
#include "h_common.h"
#define COUNT 5
pthread_barrier_t barrier;
pthread_mutex_t mutex;
int serial_count;
int after_barrier_count;
static void *
threadfunc(void *arg)
{
int which = (int)(long)arg;
int rv;
printf("thread %d entering barrier\n", which);
rv = pthread_barrier_wait(&barrier);
printf("thread %d leaving barrier -> %d\n", which, rv);
PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
after_barrier_count++;
if (rv == PTHREAD_BARRIER_SERIAL_THREAD)
serial_count++;
PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
return NULL;
}
ATF_TC(barrier);
ATF_TC_HEAD(barrier, tc)
{
atf_tc_set_md_var(tc, "descr", "Checks barriers");
}
ATF_TC_BODY(barrier, tc)
{
int i;
pthread_t new[COUNT];
void *joinval;
PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
PTHREAD_REQUIRE(pthread_barrier_init(&barrier, NULL, COUNT));
for (i = 0; i < COUNT; i++) {
PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
ATF_REQUIRE_EQ(after_barrier_count, 0);
PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
PTHREAD_REQUIRE(pthread_create(&new[i], NULL, threadfunc,
(void *)(long)i));
sleep(2);
}
for (i = 0; i < COUNT; i++) {
PTHREAD_REQUIRE(pthread_join(new[i], &joinval));
PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
ATF_REQUIRE(after_barrier_count > i);
PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
printf("main joined with thread %d\n", i);
}
PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
ATF_REQUIRE_EQ(after_barrier_count, COUNT);
PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
ATF_REQUIRE_EQ(serial_count, 1);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, barrier);
return atf_no_error();
}
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