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 44 setup(int nb __unused) 45 { 46 return (0); 47 } 48 49 void 50 cleanup(void) 51 { 52 } 53 54 static void * 55 thr1(void *arg __unused) 56 { 57 return (0); 58 } 59 60 static void * 61 thr2(void *arg __unused) 62 { 63 while (done == 0) 64 pthread_yield(); 65 return (0); 66 } 67 68 int 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