111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/* $NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $ */
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/*
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__COPYRIGHT("@(#) Copyright (c) 2008\
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The NetBSD Foundation, inc. All rights reserved.");
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__RCSID("$NetBSD: t_barrier.c,v 1.2 2010/11/03 16:10:22 christos Exp $");
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#include <pthread.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <atf-c.h>
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#include "h_common.h"
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#define COUNT 5
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pthread_barrier_t barrier;
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pthread_mutex_t mutex;
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int serial_count;
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int after_barrier_count;
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static void *
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threadfunc(void *arg)
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{
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int which = (int)(long)arg;
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int rv;
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printf("thread %d entering barrier\n", which);
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rv = pthread_barrier_wait(&barrier);
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printf("thread %d leaving barrier -> %d\n", which, rv);
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PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
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after_barrier_count++;
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if (rv == PTHREAD_BARRIER_SERIAL_THREAD)
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serial_count++;
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PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
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return NULL;
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}
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ATF_TC(barrier);
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ATF_TC_HEAD(barrier, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Checks barriers");
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}
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ATF_TC_BODY(barrier, tc)
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{
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int i;
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pthread_t new[COUNT];
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void *joinval;
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PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
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PTHREAD_REQUIRE(pthread_barrier_init(&barrier, NULL, COUNT));
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for (i = 0; i < COUNT; i++) {
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PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
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ATF_REQUIRE_EQ(after_barrier_count, 0);
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PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
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PTHREAD_REQUIRE(pthread_create(&new[i], NULL, threadfunc,
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(void *)(long)i));
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sleep(2);
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}
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for (i = 0; i < COUNT; i++) {
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PTHREAD_REQUIRE(pthread_join(new[i], &joinval));
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PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
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ATF_REQUIRE(after_barrier_count > i);
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PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
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printf("main joined with thread %d\n", i);
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}
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PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
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ATF_REQUIRE_EQ(after_barrier_count, COUNT);
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PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
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ATF_REQUIRE_EQ(serial_count, 1);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, barrier);
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return atf_no_error();
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}
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