1 /*-
2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 #include <err.h>
29 #include <fcntl.h>
30 #include <pthread.h>
31 #include <signal.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <unistd.h>
36
37 #include "stress.h"
38
39 #define NTHREADS 256
40
41 static volatile int done = 0;
42
43 int
setup(int nb __unused)44 setup(int nb __unused)
45 {
46 return (0);
47 }
48
49 void
cleanup(void)50 cleanup(void)
51 {
52 }
53
54 static void *
thr1(void * arg __unused)55 thr1(void *arg __unused)
56 {
57 return (0);
58 }
59
60 static void *
thr2(void * arg __unused)61 thr2(void *arg __unused)
62 {
63 while (done == 0)
64 pthread_yield();
65 return (0);
66 }
67
68 int
test(void)69 test(void)
70 {
71 pthread_t threads[NTHREADS];
72 int i;
73 int r;
74
75 for (i = 0; i < NTHREADS; i++)
76 if ((r = pthread_create(&threads[i], NULL, thr1, 0)) != 0)
77 errc(1, r, "pthread_create()");
78
79 for (i = 0; i < NTHREADS; i++)
80 if (pthread_join(threads[i], NULL) != 0)
81 errc(1, r, "pthread_join(%d)", i);
82
83 for (i = 0; i < NTHREADS; i++)
84 if ((r = pthread_create(&threads[i], NULL, thr2, 0)) != 0)
85 errc(1, r, "pthread_create()");
86 done = 1;
87
88 for (i = 0; i < NTHREADS; i++)
89 if ((r = pthread_join(threads[i], NULL)) != 0)
90 errc(1, r, "pthread_join(%d)", i);
91
92 return (0);
93 }
94