1/* This test program is part of GDB, The GNU debugger.
2
3   Copyright 2004 Free Software Foundation, Inc.
4
5   Originally written by Jeff Johnston <jjohnstn@redhat.com>,
6   contributed by Red Hat
7
8   This file is part of GDB.
9
10   This program is free software; you can redistribute it and/or modify
11   it under the terms of the GNU General Public License as published by
12   the Free Software Foundation; either version 2 of the License, or
13   (at your option) any later version.
14
15   This program is distributed in the hope that it will be useful,
16   but WITHOUT ANY WARRANTY; without even the implied warranty of
17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18   GNU General Public License for more details.
19
20   You should have received a copy of the GNU General Public License
21   along with this program; if not, write to the Free Software
22   Foundation, Inc., 59 Temple Place - Suite 330,
23   Boston, MA 02111-1307, USA.  */
24
25#include <pthread.h>
26#include <semaphore.h>
27#include <stdio.h>
28#include <limits.h>
29#include <errno.h>
30
31sem_t semaphore;
32
33void *
34thread_function (void *arg)
35{
36  printf ("Thread executing\n");
37  while (sem_wait (&semaphore) != 0)
38    {
39      if (errno != EINTR)
40	{
41	  perror ("thread_function");
42	  return;
43	}
44    }
45  return NULL;
46}
47
48int
49main (int argc, char **argv)
50{
51  pthread_attr_t attr;
52
53  pthread_attr_init (&attr);
54  pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);
55
56  if (sem_init (&semaphore, 0, 0) == -1)
57    {
58      perror ("semaphore");
59      return -1;
60    }
61
62
63  /* Create a thread, wait for it to complete.  */
64  {
65    pthread_t thread;
66    pthread_create (&thread, &attr, thread_function, NULL);
67    sem_post (&semaphore);
68    pthread_join (thread, NULL);
69  }
70
71  pthread_attr_destroy (&attr);
72  return 0;
73}
74