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/* This testcase is part of GDB, the GNU debugger.
Copyright 2016-2024 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 <unistd.h>
#include <stdint.h>
#define NUM_THREADS 2
static volatile int unblock_main[NUM_THREADS];
static void
child_sub_function (int child_idx)
{
volatile int dummy = 0;
unblock_main[child_idx] = 1;
while (1)
/* Dummy loop body to allow setting breakpoint. */
dummy = !dummy; /* thread loop line */
}
static void *
child_function (void *args)
{
int child_idx = (int) (uintptr_t) args;
child_sub_function (child_idx); /* thread caller line */
return NULL;
}
int
main (void)
{
int i = 0;
pthread_t threads[NUM_THREADS];
/* Make the test exit eventually. */
alarm (20);
for (i = 0; i < NUM_THREADS; i++)
pthread_create (&threads[i], NULL, child_function, (void *) (uintptr_t) i);
/* Wait for child threads to reach child_sub_function. */
for (i = 0; i < NUM_THREADS; i++)
while (!unblock_main[i])
;
volatile int dummy = 0;
while (1)
/* Dummy loop body to allow setting breakpoint. */
dummy = !dummy; /* main break line */
return 0;
}
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