mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* Check that error checking mutexes are not subject to lock elision.
|
|
Copyright (C) 2016-2018 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 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
#include <pthread.h>
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
struct timespec tms = { 0 };
|
|
pthread_mutex_t mutex;
|
|
pthread_mutexattr_t mutexattr;
|
|
int ret = 0;
|
|
|
|
if (pthread_mutexattr_init (&mutexattr) != 0)
|
|
return 1;
|
|
if (pthread_mutexattr_settype (&mutexattr, PTHREAD_MUTEX_ERRORCHECK) != 0)
|
|
return 1;
|
|
|
|
if (pthread_mutex_init (&mutex, &mutexattr) != 0)
|
|
return 1;
|
|
if (pthread_mutexattr_destroy (&mutexattr) != 0)
|
|
return 1;
|
|
|
|
/* The call to pthread_mutex_timedlock erroneously enabled lock elision
|
|
on the mutex, which then triggered an assertion failure in
|
|
pthread_mutex_unlock. It would also defeat the error checking nature
|
|
of the mutex. */
|
|
if (pthread_mutex_timedlock (&mutex, &tms) != 0)
|
|
return 1;
|
|
if (pthread_mutex_timedlock (&mutex, &tms) != EDEADLK)
|
|
{
|
|
printf ("Failed error checking on locked mutex\n");
|
|
ret = 1;
|
|
}
|
|
|
|
if (pthread_mutex_unlock (&mutex) != 0)
|
|
ret = 1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|