1 /* $OpenBSD: pthread_join.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_pthread_join.c ================================================= 36 * Copyright (c) 1993 by Chris Provenzano, proven@athena.mit.edu 37 * 38 * Description : Test pthread_join(). Run this after test_create() 39 * 40 * 1.23 94/05/04 proven 41 * -Started coding this file. 42 */ 43 44 #include <pthread.h> 45 #include <unistd.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include "test.h" 49 50 /* This thread yields so the creator has a live thread to wait on */ 51 void* new_thread_1(void * new_buf) 52 { 53 int i; 54 55 sprintf((char *)new_buf, "New thread %%d stack at %p\n", &i); 56 pthread_yield(); /* (ensure parent can wait on live thread) */ 57 sleep(1); 58 return(new_buf); 59 PANIC("return"); 60 } 61 62 /* This thread doesn't yield so the creator has a dead thread to wait on */ 63 void* new_thread_2(void * new_buf) 64 { 65 int i; 66 67 sprintf((char *)new_buf, "New thread %%d stack at %p\n", &i); 68 return(new_buf); 69 PANIC("return"); 70 } 71 72 int 73 main() 74 { 75 char buf[256], *status; 76 pthread_t thread; 77 int debug = 1; 78 int i = 0; 79 80 if (debug) 81 printf("Original thread stack at %p\n", &i); 82 83 CHECKr(pthread_create(&thread, NULL, new_thread_1, (void *)buf)); 84 CHECKr(pthread_join(thread, (void **)(&status))); 85 if (debug) 86 printf(status, ++i); 87 88 /* Now have the created thread finishing before the join. */ 89 CHECKr(pthread_create(&thread, NULL, new_thread_2, (void *)buf)); 90 pthread_yield(); 91 sleep(1); /* (ensure thread is dead) */ 92 CHECKr(pthread_join(thread, (void **)(&status))); 93 94 if (debug) 95 printf(status, ++i); 96 97 SUCCEED; 98 } 99 100