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/* Test concurrency level.
Copyright (C) 2000-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#define _GNU_SOURCE
#include <pthread.h>
#include <assert.h>
#include <error.h>
#include <errno.h>
int
main (int argc, char **argv)
{
int i;
int err;
i = pthread_getconcurrency ();
assert (i == 0);
err = pthread_setconcurrency (-1);
assert (err == EINVAL);
err = pthread_setconcurrency (4);
assert (err == 0);
i = pthread_getconcurrency ();
assert (i == 4);
return 0;
}
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