1/* A small multi-threaded test case. 2 3 Copyright 2004 4 Free Software Foundation, Inc. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 59 Temple Place - Suite 330, 21 Boston, MA 02111-1307, USA. */ 22 23#include <pthread.h> 24#include <stdio.h> 25#include <time.h> 26 27void 28cond_wait (pthread_cond_t *cond, pthread_mutex_t *mut) 29{ 30 pthread_mutex_lock(mut); 31 pthread_cond_wait (cond, mut); 32 pthread_mutex_unlock (mut); 33} 34 35void 36noreturn (void) 37{ 38 pthread_mutex_t mut; 39 pthread_cond_t cond; 40 41 pthread_mutex_init (&mut, NULL); 42 pthread_cond_init (&cond, NULL); 43 44 /* Wait for a condition that will never be signaled, so we effectively 45 block the thread here. */ 46 cond_wait (&cond, &mut); 47} 48 49void * 50forever_pthread (void *unused) 51{ 52 noreturn (); 53} 54 55void 56break_me (void) 57{ 58 /* Just an anchor to help putting a breakpoint. */ 59} 60 61int 62main (void) 63{ 64 pthread_t forever; 65 const struct timespec ts = { 0, 10000000 }; /* 0.01 sec */ 66 67 pthread_create (&forever, NULL, forever_pthread, NULL); 68 for (;;) 69 { 70 nanosleep (&ts, NULL); 71 break_me(); 72 } 73 74 return 0; 75} 76 77