1 /* $OpenBSD: sleep.c,v 1.4 2003/07/31 21:48:06 deraadt 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 50 const char buf[] = "abcdefghijklimnopqrstuvwxyz"; 51 int fd = 1; 52 53 static void * 54 new_thread(void* arg) 55 { 56 int i; 57 58 for (i = 0; i < 10; i++) { 59 write(fd, buf + (long) arg, 1); 60 sleep(1); 61 } 62 return NULL; 63 } 64 65 int 66 main(int argc, char *argv[]) 67 { 68 pthread_t thread[2]; 69 int count = sizeof thread/sizeof thread[0]; 70 long i; 71 72 printf("Going to sleep\n"); 73 sleep(3); 74 printf("Done sleeping\n"); 75 76 for(i = 0; i < count; i++) 77 CHECKr(pthread_create(&thread[i], NULL, new_thread, 78 (void *) i)); 79 80 for (i = 0; i < count; i++) 81 CHECKr(pthread_join(thread[i], NULL)); 82 83 CHECKe(write(STDOUT_FILENO, "\n", 1)); 84 SUCCEED; 85 } 86