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/* Test error checking mutexes.
Copyright (C) 2000-2020 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://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)
{
error_t err;
pthread_mutexattr_t mattr;
pthread_mutex_t mutex;
err = pthread_mutexattr_init (&mattr);
if (err)
error (1, err, "pthread_mutexattr_init");
err = pthread_mutexattr_settype (&mattr, PTHREAD_MUTEX_ERRORCHECK);
if (err)
error (1, err, "pthread_mutexattr_settype");
err = pthread_mutex_init (&mutex, &mattr);
if (err)
error (1, err, "pthread_mutex_init");
err = pthread_mutexattr_destroy (&mattr);
if (err)
error (1, err, "pthread_mutexattr_destroy");
err = pthread_mutex_lock (&mutex);
assert (err == 0);
err = pthread_mutex_lock (&mutex);
assert (err == EDEADLK);
err = pthread_mutex_unlock (&mutex);
assert (err == 0);
err = pthread_mutex_unlock (&mutex);
assert (err == EPERM);
return 0;
}
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