1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011
4   Free Software Foundation, Inc.
5
6   Copyright 1992, 1993, 1994, 1995, 1999, 2002, 2003, 2007, 2008, 2009
7   Free Software Foundation, Inc.
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   This file is copied from schedlock.c.  */
23
24#include <stdio.h>
25#include <unistd.h>
26#include <stdlib.h>
27#include <pthread.h>
28
29void *thread_function (void *arg); /* Pointer to function executed by each thread */
30
31#define NUM 5
32
33static unsigned int shared_var = 1;
34
35int main () {
36    int res;
37    pthread_t threads[NUM];
38    void *thread_result;
39    long i;
40
41    for (i = 0; i < NUM; i++)
42      {
43        res = pthread_create (&threads[i],
44                             NULL,
45                             thread_function,
46			     (void *) i);
47      }
48
49    thread_result = thread_function ((void *) i);
50
51    exit (EXIT_SUCCESS);
52}
53
54void *thread_function (void *arg) {
55    int my_number = (long) arg;
56    /* Don't run forever.  Run just short of it :)  */
57    while (shared_var > 0)
58      {
59        shared_var++;
60	usleep (1); /* Loop increment.  */
61      }
62
63    pthread_exit (NULL);
64}
65
66