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/* This testcase is part of GDB, the GNU debugger.
Copyright 2002-2018 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
This file is based on schedlock.c. */
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <pthread.h>
int THREADS = 10;
unsigned int *args;
volatile int done = 0;
void *
thread_function (void *arg)
{
int my_number = (long) arg;
volatile int *myp = (volatile int *) &args[my_number];
/* Don't run forever. Run just short of it :) */
while (*myp > 0 && !done)
{
(*myp)++; /* set breakpoint here */
}
if (done)
usleep (100); /* Some time to make sure we don't mask any bad
SIGTRAP handling. */
pthread_exit (NULL);
}
int
main (int argc, char **argv)
{
int res;
pthread_t *threads;
void *thread_result;
long i = 0;
threads = malloc (THREADS * sizeof (pthread_t));
args = malloc (THREADS * sizeof (unsigned int));
for (i = 0; i < THREADS; i++)
{
args[i] = 1; /* Init value. */
res = pthread_create (&threads[i],
NULL,
thread_function,
(void *) i);
}
for (i = 0; i < THREADS; i++)
pthread_join (threads[i], &thread_result);
exit(EXIT_SUCCESS);
}
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