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#!/bin/sh
#
# Copyright (c) 2014 EMC Corp.
# 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.
#
# Stress shchan allocations.
. ../default.cfg
[ `swapinfo | wc -l` -eq 1 ] && exit 0 # kstack allocation failed
here=`pwd`
cd /tmp
sed '1,/^EOF/d' < $here/$0 > pthread5.c
mycc -o pthread5 -Wall -Wextra -O2 pthread5.c -lpthread || exit 1
rm -f pthread5.c
/tmp/pthread5
rm -f /tmp/pthread5
exit 0
EOF
#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/event.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <unistd.h>
#define ITER 2
#define PARALLEL 1000
#define THREADS 100
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
static void *
nicethreads(void *data __unused)
{
struct timespec ts;
struct timeval tp;
pthread_mutex_lock(&mutex);
gettimeofday(&tp, NULL);
ts.tv_sec = tp.tv_sec;
ts.tv_nsec = tp.tv_usec * 1000;
ts.tv_sec += 30;
pthread_cond_timedwait(&cond, &mutex, &ts);
pthread_mutex_unlock(&mutex);
return (NULL);
}
int
test(void)
{
int num_thread = THREADS;
pthread_t tid[num_thread];
int i, iter, rc;
for (iter = 0; iter < ITER; iter++) {
for (i = 0; i < num_thread; i++) {
if ((rc = pthread_create(&tid[i], NULL, nicethreads,
NULL)) != 0)
errc(1, rc, "pthread_create");
}
usleep(20000);
for (i = 0; i < num_thread; i++) {
rc = pthread_mutex_lock(&mutex);
rc = pthread_cond_signal(&cond);
rc = pthread_mutex_unlock(&mutex);
}
for (i = 0; i < num_thread; i++)
if ((rc = pthread_join(tid[i], NULL)) != 0)
errc(1, rc, "pthread_join");
}
_exit(0);
}
int
main(void)
{
int i;
for (i = 0; i < PARALLEL; i++)
if (fork() == 0)
test();
for (i = 0; i < PARALLEL; i++)
wait(NULL);
return (0);
}
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