1/* Manythreads test program.
2   Copyright 2004, 2006, 2007 Free Software Foundation, Inc.
3
4   Written by Jeff Johnston <jjohnstn@redhat.com>
5   Contributed by Red Hat
6
7   This file is part of GDB.
8
9   This program is free software; you can redistribute it and/or modify
10   it under the terms of the GNU General Public License as published by
11   the Free Software Foundation; either version 3 of the License, or
12   (at your option) any later version.
13
14   This program is distributed in the hope that it will be useful,
15   but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   GNU General Public License for more details.
18
19   You should have received a copy of the GNU General Public License
20   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
21
22#include <pthread.h>
23#include <stdio.h>
24#include <limits.h>
25
26void *
27thread_function (void *arg)
28{
29  int x = * (int *) arg;
30
31  printf ("Thread <%d> executing\n", x);
32
33  return NULL;
34}
35
36int
37main (int argc, char **argv)
38{
39  pthread_attr_t attr;
40  pthread_t threads[256];
41  int args[256];
42  int i, j;
43
44  pthread_attr_init (&attr);
45  pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);
46
47  /* Create a ton of quick-executing threads, then wait for them to
48     complete.  */
49  for (i = 0; i < 1000; ++i)
50    {
51      for (j = 0; j < 256; ++j)
52	{
53	  args[j] = i * 1000 + j;
54	  pthread_create (&threads[j], &attr, thread_function, &args[j]);
55	}
56
57      for (j = 0; j < 256; ++j)
58	{
59	  pthread_join (threads[j], NULL);
60	}
61    }
62
63  pthread_attr_destroy (&attr);
64
65  return 0;
66}
67