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