1*8a272653SPeter Holm /*-
2*8a272653SPeter Holm * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
3*8a272653SPeter Holm * All rights reserved.
4*8a272653SPeter Holm *
5*8a272653SPeter Holm * Redistribution and use in source and binary forms, with or without
6*8a272653SPeter Holm * modification, are permitted provided that the following conditions
7*8a272653SPeter Holm * are met:
8*8a272653SPeter Holm * 1. Redistributions of source code must retain the above copyright
9*8a272653SPeter Holm * notice, this list of conditions and the following disclaimer.
10*8a272653SPeter Holm * 2. Redistributions in binary form must reproduce the above copyright
11*8a272653SPeter Holm * notice, this list of conditions and the following disclaimer in the
12*8a272653SPeter Holm * documentation and/or other materials provided with the distribution.
13*8a272653SPeter Holm *
14*8a272653SPeter Holm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*8a272653SPeter Holm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*8a272653SPeter Holm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*8a272653SPeter Holm * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*8a272653SPeter Holm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*8a272653SPeter Holm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*8a272653SPeter Holm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*8a272653SPeter Holm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*8a272653SPeter Holm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*8a272653SPeter Holm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*8a272653SPeter Holm * SUCH DAMAGE.
25*8a272653SPeter Holm *
26*8a272653SPeter Holm */
27*8a272653SPeter Holm
28*8a272653SPeter Holm #include <err.h>
29*8a272653SPeter Holm #include <fcntl.h>
30*8a272653SPeter Holm #include <pthread.h>
31*8a272653SPeter Holm #include <signal.h>
32*8a272653SPeter Holm #include <stdio.h>
33*8a272653SPeter Holm #include <stdlib.h>
34*8a272653SPeter Holm #include <string.h>
35*8a272653SPeter Holm #include <unistd.h>
36*8a272653SPeter Holm
37*8a272653SPeter Holm #include "stress.h"
38*8a272653SPeter Holm
39*8a272653SPeter Holm #define NTHREADS 256
40*8a272653SPeter Holm
41*8a272653SPeter Holm static volatile int done = 0;
42*8a272653SPeter Holm
43*8a272653SPeter Holm int
setup(int nb __unused)44*8a272653SPeter Holm setup(int nb __unused)
45*8a272653SPeter Holm {
46*8a272653SPeter Holm return (0);
47*8a272653SPeter Holm }
48*8a272653SPeter Holm
49*8a272653SPeter Holm void
cleanup(void)50*8a272653SPeter Holm cleanup(void)
51*8a272653SPeter Holm {
52*8a272653SPeter Holm }
53*8a272653SPeter Holm
54*8a272653SPeter Holm static void *
thr1(void * arg __unused)55*8a272653SPeter Holm thr1(void *arg __unused)
56*8a272653SPeter Holm {
57*8a272653SPeter Holm return (0);
58*8a272653SPeter Holm }
59*8a272653SPeter Holm
60*8a272653SPeter Holm static void *
thr2(void * arg __unused)61*8a272653SPeter Holm thr2(void *arg __unused)
62*8a272653SPeter Holm {
63*8a272653SPeter Holm while (done == 0)
64*8a272653SPeter Holm pthread_yield();
65*8a272653SPeter Holm return (0);
66*8a272653SPeter Holm }
67*8a272653SPeter Holm
68*8a272653SPeter Holm int
test(void)69*8a272653SPeter Holm test(void)
70*8a272653SPeter Holm {
71*8a272653SPeter Holm pthread_t threads[NTHREADS];
72*8a272653SPeter Holm int i;
73*8a272653SPeter Holm int r;
74*8a272653SPeter Holm
75*8a272653SPeter Holm for (i = 0; i < NTHREADS; i++)
76*8a272653SPeter Holm if ((r = pthread_create(&threads[i], NULL, thr1, 0)) != 0)
77*8a272653SPeter Holm errc(1, r, "pthread_create()");
78*8a272653SPeter Holm
79*8a272653SPeter Holm for (i = 0; i < NTHREADS; i++)
80*8a272653SPeter Holm if (pthread_join(threads[i], NULL) != 0)
81*8a272653SPeter Holm errc(1, r, "pthread_join(%d)", i);
82*8a272653SPeter Holm
83*8a272653SPeter Holm for (i = 0; i < NTHREADS; i++)
84*8a272653SPeter Holm if ((r = pthread_create(&threads[i], NULL, thr2, 0)) != 0)
85*8a272653SPeter Holm errc(1, r, "pthread_create()");
86*8a272653SPeter Holm done = 1;
87*8a272653SPeter Holm
88*8a272653SPeter Holm for (i = 0; i < NTHREADS; i++)
89*8a272653SPeter Holm if ((r = pthread_join(threads[i], NULL)) != 0)
90*8a272653SPeter Holm errc(1, r, "pthread_join(%d)", i);
91*8a272653SPeter Holm
92*8a272653SPeter Holm return (0);
93*8a272653SPeter Holm }
94