xref: /openbsd-src/regress/lib/libpthread/sleep/sleep.c (revision db3296cf5c1dd9058ceecc3a29fe4aaa0bd26000)

/*	$OpenBSD: sleep.c,v 1.4 2003/07/31 21:48:06 deraadt Exp $	*/
/*
 * Copyright (c) 1993, 1994, 1995, 1996 by Chris Provenzano and contributors,
 * proven@mit.edu 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Chris Provenzano,
 *	the University of California, Berkeley, and contributors.
 * 4. Neither the name of Chris Provenzano, the University, nor the names of
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO 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 CHRIS PROVENZANO, THE REGENTS 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.
 */

/* ==== test_sleep.c =========================================================
 * Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu
 *
 * Description : Test context switch functionality.
 *
 *  1.00 93/08/04 proven
 *      -Started coding this file.
 */

#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include "test.h"

const char buf[] = "abcdefghijklimnopqrstuvwxyz";
int fd = 1;

static void *
new_thread(void* arg)
{
	int i;

	for (i = 0; i < 10; i++) {
		write(fd, buf + (long) arg, 1);
		sleep(1);
	}
	return NULL;
}

int
main(int argc, char *argv[])
{
	pthread_t thread[2];
	int count = sizeof thread/sizeof thread[0];
	long i;

	printf("Going to sleep\n");
	sleep(3);
	printf("Done sleeping\n");

	for(i = 0; i < count; i++)
		CHECKr(pthread_create(&thread[i], NULL, new_thread,
		    (void *) i));

	for (i = 0; i < count; i++)
		CHECKr(pthread_join(thread[i], NULL));

	CHECKe(write(STDOUT_FILENO, "\n", 1));
	SUCCEED;
}