sleep.c revision 1.2 
1/*	$OpenBSD: sleep.c,v 1.2 2001/09/20 16:43:15 todd Exp $	*/
2/*
3 * Copyright (c) 1993, 1994, 1995, 1996 by Chris Provenzano and contributors,
4 * proven@mit.edu All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by Chris Provenzano,
17 *	the University of California, Berkeley, and contributors.
18 * 4. Neither the name of Chris Provenzano, the University, nor the names of
19 *   contributors may be used to endorse or promote products derived
20 *   from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL CHRIS PROVENZANO, THE REGENTS OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35/* ==== test_sleep.c =========================================================
36 * Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu
37 *
38 * Description : Test context switch functionality.
39 *
40 *  1.00 93/08/04 proven
41 *      -Started coding this file.
42 */
43
44#include <pthread.h>
45#include <stdio.h>
46#include <unistd.h>
47#include <stdlib.h>
48#include "test.h"
49
50const char buf[] = "abcdefghijklimnopqrstuvwxyz";
51int fd = 1;
52
53void* new_thread(void* arg)
54{
55	int i;
56
57	for (i = 0; i < 10; i++) {
58		write(fd, buf + (long) arg, 1);
59		sleep(1);
60	}
61	return NULL;
62}
63
64int
65main()
66{
67	pthread_t thread[2];
68	int count = sizeof thread/sizeof thread[0];
69	long i;
70
71	printf("Going to sleep\n");
72	sleep(3);
73	printf("Done sleeping\n");
74
75	for(i = 0; i < count; i++)
76		CHECKr(pthread_create(&thread[i], NULL, new_thread,
77		    (void *) i));
78
79	for (i = 0; i < count; i++)
80		CHECKr(pthread_join(thread[i], NULL));
81
82	SUCCEED;
83}
84