1/* A small multi-threaded test case. 2 3 Copyright 2004, 2007 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20#include <pthread.h> 21#include <stdio.h> 22#include <time.h> 23 24void 25cond_wait (pthread_cond_t *cond, pthread_mutex_t *mut) 26{ 27 pthread_mutex_lock(mut); 28 pthread_cond_wait (cond, mut); 29 pthread_mutex_unlock (mut); 30} 31 32void 33noreturn (void) 34{ 35 pthread_mutex_t mut; 36 pthread_cond_t cond; 37 38 pthread_mutex_init (&mut, NULL); 39 pthread_cond_init (&cond, NULL); 40 41 /* Wait for a condition that will never be signaled, so we effectively 42 block the thread here. */ 43 cond_wait (&cond, &mut); 44} 45 46void * 47forever_pthread (void *unused) 48{ 49 noreturn (); 50} 51 52void 53break_me (void) 54{ 55 /* Just an anchor to help putting a breakpoint. */ 56} 57 58int 59main (void) 60{ 61 pthread_t forever; 62 const struct timespec ts = { 0, 10000000 }; /* 0.01 sec */ 63 64 pthread_create (&forever, NULL, forever_pthread, NULL); 65 for (;;) 66 { 67 nanosleep (&ts, NULL); 68 break_me(); 69 } 70 71 return 0; 72} 73 74