/* * Copyright (C) 2008 The Android Open Source Project * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <pthread.h> #include <stdio.h> #include <unistd.h> static void* thread1_func(void* arg) { usleep( 2000*1000 ); printf("thread 1 exited\n"); return (void*) 0x8badf00d; } static void* thread2_func(void* arg) { pthread_t t1 = (pthread_t)arg; void* result; pthread_join(t1, &result); printf("thread2 received code %08x from thread1\n", (int)result); return NULL; } static void* thread3_func(void* arg) { pthread_t t1 = (pthread_t)arg; void* result; pthread_join(t1, &result); printf("thread3 received code %08x from thread1\n", (int)result); return NULL; } int main( void ) { pthread_t t1, t2, t3; pthread_create( &t1, NULL, thread1_func, NULL ); pthread_create( &t2, NULL, thread2_func, (void*)t1 ); pthread_create( &t3, NULL, thread3_func, (void*)t1 ); pthread_join(t2, NULL); pthread_join(t3, NULL); printf("OK\n"); return 0; }