mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 11:20:07 +00:00
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* Helper program for testing the pthread_rwlock_t pretty printer.
|
|
|
|
Copyright (C) 2016-2017 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/>. */
|
|
|
|
/* Keep the calls to the pthread_* functions on separate lines to make it easy
|
|
to advance through the program using the gdb 'next' command. */
|
|
|
|
#include <pthread.h>
|
|
|
|
#define PASS 0
|
|
#define FAIL 1
|
|
|
|
static int test_locking_reader (pthread_rwlock_t *rwlock);
|
|
static int test_locking_writer (pthread_rwlock_t *rwlock);
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
pthread_rwlock_t rwlock;
|
|
|
|
int result = FAIL;
|
|
|
|
if (test_locking_reader (&rwlock) == PASS
|
|
&& test_locking_writer (&rwlock) == PASS)
|
|
result = PASS;
|
|
/* Else, one of the pthread_rwlock* functions failed. */
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Tests locking the rwlock multiple times as a reader. */
|
|
static int
|
|
test_locking_reader (pthread_rwlock_t *rwlock)
|
|
{
|
|
int result = FAIL;
|
|
|
|
if (pthread_rwlock_init (rwlock, NULL) == 0
|
|
&& pthread_rwlock_rdlock (rwlock) == 0 /* Test locking (reader). */
|
|
&& pthread_rwlock_rdlock (rwlock) == 0
|
|
&& pthread_rwlock_rdlock (rwlock) == 0
|
|
&& pthread_rwlock_unlock (rwlock) == 0
|
|
&& pthread_rwlock_unlock (rwlock) == 0
|
|
&& pthread_rwlock_unlock (rwlock) == 0
|
|
&& pthread_rwlock_destroy (rwlock) == 0)
|
|
result = PASS;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Tests locking the rwlock as a writer. */
|
|
static int
|
|
test_locking_writer (pthread_rwlock_t *rwlock)
|
|
{
|
|
int result = FAIL;
|
|
|
|
if (pthread_rwlock_init (rwlock, NULL) == 0
|
|
&& pthread_rwlock_wrlock (rwlock) == 0 /* Test locking (writer). */
|
|
&& pthread_rwlock_unlock (rwlock) == 0
|
|
&& pthread_rwlock_destroy (rwlock) == 0)
|
|
result = PASS;
|
|
|
|
return result;
|
|
}
|