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/* This testcase is part of GDB, the GNU debugger.
Copyright 2022-2023 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 <sys/syscall.h>
#define NUM_THREADS 32
pthread_barrier_t barrier;
static void
do_exit (int exitcode)
{
/* Synchronize all threads up to here so that they all exit at
roughly the same time. */
pthread_barrier_wait (&barrier);
/* All threads exit with SYS_exit, even the main thread, to avoid
exiting with a group-exit syscall, as that syscall changes the
exit status of all still-alive threads, thus potentially masking
a bug. */
syscall (SYS_exit, exitcode);
}
static void *
start (void *arg)
{
int thread_return_value = *(int *) arg;
do_exit (thread_return_value);
}
int
main(void)
{
pthread_t threads[NUM_THREADS];
int thread_return_val[NUM_THREADS];
int i;
pthread_barrier_init (&barrier, NULL, NUM_THREADS + 1);
for (i = 0; i < NUM_THREADS; ++i)
{
thread_return_val[i] = i + 2;
pthread_create (&threads[i], NULL, start, &thread_return_val[i]);
}
do_exit (1);
}
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