xref: /openbsd-src/gnu/usr.bin/binutils/gdb/testsuite/gdb.threads/watchthreads.c (revision 11efff7f3ac2b3cfeff0c0cddc14294d9b3aca4f)
1*11efff7fSkettenis /* This testcase is part of GDB, the GNU debugger.
2*11efff7fSkettenis 
3*11efff7fSkettenis    Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
4*11efff7fSkettenis 
5*11efff7fSkettenis    This program is free software; you can redistribute it and/or modify
6*11efff7fSkettenis    it under the terms of the GNU General Public License as published by
7*11efff7fSkettenis    the Free Software Foundation; either version 2 of the License, or
8*11efff7fSkettenis    (at your option) any later version.
9*11efff7fSkettenis 
10*11efff7fSkettenis    This program is distributed in the hope that it will be useful,
11*11efff7fSkettenis    but WITHOUT ANY WARRANTY; without even the implied warranty of
12*11efff7fSkettenis    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13*11efff7fSkettenis    GNU General Public License for more details.
14*11efff7fSkettenis 
15*11efff7fSkettenis    You should have received a copy of the GNU General Public License
16*11efff7fSkettenis    along with this program; if not, write to the Free Software
17*11efff7fSkettenis    Foundation, Inc., 59 Temple Place - Suite 330,
18*11efff7fSkettenis    Boston, MA 02111-1307, USA.
19*11efff7fSkettenis 
20*11efff7fSkettenis    This file is copied from schedlock.c.  */
21*11efff7fSkettenis 
22*11efff7fSkettenis #include <stdio.h>
23*11efff7fSkettenis #include <unistd.h>
24*11efff7fSkettenis #include <stdlib.h>
25*11efff7fSkettenis #include <pthread.h>
26*11efff7fSkettenis 
27*11efff7fSkettenis void *thread_function(void *arg); /* Pointer to function executed by each thread */
28*11efff7fSkettenis 
29*11efff7fSkettenis #define NUM 5
30*11efff7fSkettenis 
31*11efff7fSkettenis unsigned int args[NUM+1];
32*11efff7fSkettenis 
main()33*11efff7fSkettenis int main() {
34*11efff7fSkettenis     int res;
35*11efff7fSkettenis     pthread_t threads[NUM];
36*11efff7fSkettenis     void *thread_result;
37*11efff7fSkettenis     long i;
38*11efff7fSkettenis 
39*11efff7fSkettenis     for (i = 0; i < NUM; i++)
40*11efff7fSkettenis       {
41*11efff7fSkettenis 	args[i] = 1; /* Init value.  */
42*11efff7fSkettenis 	res = pthread_create(&threads[i],
43*11efff7fSkettenis 		             NULL,
44*11efff7fSkettenis 			     thread_function,
45*11efff7fSkettenis 			     (void *) i);
46*11efff7fSkettenis       }
47*11efff7fSkettenis 
48*11efff7fSkettenis     args[i] = 1;
49*11efff7fSkettenis     thread_function ((void *) i);
50*11efff7fSkettenis 
51*11efff7fSkettenis     exit(EXIT_SUCCESS);
52*11efff7fSkettenis }
53*11efff7fSkettenis 
thread_function(void * arg)54*11efff7fSkettenis void *thread_function(void *arg) {
55*11efff7fSkettenis     int my_number =  (long) arg;
56*11efff7fSkettenis     int *myp = (int *) &args[my_number];
57*11efff7fSkettenis 
58*11efff7fSkettenis     /* Don't run forever.  Run just short of it :)  */
59*11efff7fSkettenis     while (*myp > 0)
60*11efff7fSkettenis       {
61*11efff7fSkettenis 	(*myp) ++;  /* Loop increment.  */
62*11efff7fSkettenis       }
63*11efff7fSkettenis 
64*11efff7fSkettenis     pthread_exit(NULL);
65*11efff7fSkettenis }
66*11efff7fSkettenis 
67