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/* This testcase is part of GDB, the GNU debugger.
Copyright 2014-2017 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/>. */
#include <pthread.h>
#include <assert.h>
#include <unistd.h>
#include <stdlib.h>
pthread_barrier_t barrier;
volatile int second_child;
void
breakpoint_function (void)
{
/* GDB sets a breakpoint in this function. */
}
void *
child_function_0 (void *arg)
{
volatile unsigned int counter = 1;
pthread_barrier_wait (&barrier);
while (counter > 0)
{
counter++;
usleep (1);
if (second_child)
continue;
breakpoint_function ();
}
pthread_exit (NULL);
}
void *
child_function_1 (void *arg)
{
volatile unsigned int counter = 1;
pthread_barrier_wait (&barrier);
while (counter > 0)
{
counter++;
usleep (1);
if (!second_child)
continue;
breakpoint_function ();
}
pthread_exit (NULL);
}
static int
wait_threads (void)
{
return 1; /* in wait_threads */
}
int
main (void)
{
pthread_t child_thread[2];
int res;
pthread_barrier_init (&barrier, NULL, 3);
res = pthread_create (&child_thread[0], NULL, child_function_0, NULL);
assert (res == 0);
res = pthread_create (&child_thread[1], NULL, child_function_1, NULL);
assert (res == 0);
pthread_barrier_wait (&barrier);
wait_threads (); /* set wait-thread breakpoint here */
pthread_join (child_thread[0], NULL);
pthread_join (child_thread[1], NULL);
exit (EXIT_SUCCESS);
}
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