1/* This testcase is part of GDB, the GNU debugger.
2
3   Copyright 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program.  If not, see <http://www.gnu.org/licenses/>.
17
18   This file is copied from schedlock.c.  */
19
20#include <stdio.h>
21#include <unistd.h>
22#include <stdlib.h>
23#include <pthread.h>
24
25void *thread_function(void *arg); /* Pointer to function executed by each thread */
26
27#define NUM 5
28
29unsigned int args[NUM+1];
30
31int main() {
32    int res;
33    int all_started;
34    pthread_t threads[NUM];
35    void *thread_result;
36    long i;
37
38    for (i = 0; i < NUM; i++)
39      {
40	args[i] = 1; /* Init value.  */
41	res = pthread_create(&threads[i],
42		             NULL,
43			     thread_function,
44			     (void *) i);
45      }
46
47    all_started = 0;
48    while (!all_started)
49      {
50	all_started = 1;
51        for (i = 0; i < NUM; i++)
52          {
53            if (args[i] == 1)
54	      {
55	        all_started = 0;
56	        break;
57	      }
58          }
59      }
60
61    args[i] = 1;
62    /* Break here */
63    thread_function ((void *) i);
64
65    exit(EXIT_SUCCESS);
66}
67
68void *thread_function(void *arg) {
69    int my_number =  (long) arg;
70    int *myp = (int *) &args[my_number];
71
72    /* Don't run forever.  Run just short of it :)  */
73    while (*myp > 0)
74      {
75	(*myp) ++;  /* Loop increment.  */
76      }
77
78    pthread_exit(NULL);
79}
80
81