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/* Helper program for testing the pthread_rwlock_t and pthread_rwlockattr_t
pretty printers.
Copyright (C) 2016-2021 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/>. */
/* 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
/* Need these so we don't have lines longer than 79 chars. */
#define SET_KIND(attr, kind) pthread_rwlockattr_setkind_np (attr, kind)
#define SET_SHARED(attr, shared) pthread_rwlockattr_setpshared (attr, shared)
static int rwlock_reinit (pthread_rwlock_t *rwlock,
const pthread_rwlockattr_t *attr);
static int test_setkind_np (pthread_rwlock_t *rwlock,
pthread_rwlockattr_t *attr);
static int test_setpshared (pthread_rwlock_t *rwlock,
pthread_rwlockattr_t *attr);
int
main (void)
{
pthread_rwlock_t rwlock;
pthread_rwlockattr_t attr;
int result = FAIL;
if (pthread_rwlockattr_init (&attr) == 0
&& pthread_rwlock_init (&rwlock, NULL) == 0
&& test_setkind_np (&rwlock, &attr) == PASS
&& test_setpshared (&rwlock, &attr) == PASS)
result = PASS;
/* Else, one of the pthread_rwlock* functions failed. */
return result;
}
/* Destroys RWLOCK and re-initializes it using ATTR. */
static int
rwlock_reinit (pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr)
{
int result = FAIL;
if (pthread_rwlock_destroy (rwlock) == 0
&& pthread_rwlock_init (rwlock, attr) == 0)
result = PASS;
return result;
}
/* Tests setting whether the rwlock prefers readers or writers. */
static int
test_setkind_np (pthread_rwlock_t *rwlock, pthread_rwlockattr_t *attr)
{
int result = FAIL;
if (SET_KIND (attr, PTHREAD_RWLOCK_PREFER_READER_NP) == 0 /* Set kind. */
&& rwlock_reinit (rwlock, attr) == PASS
&& SET_KIND (attr, PTHREAD_RWLOCK_PREFER_WRITER_NP) == 0
&& rwlock_reinit (rwlock, attr) == PASS
&& SET_KIND (attr, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP) == 0
&& rwlock_reinit (rwlock, attr) == PASS)
result = PASS;
return result;
}
/* Tests setting whether the rwlock can be shared between processes. */
static int
test_setpshared (pthread_rwlock_t *rwlock, pthread_rwlockattr_t *attr)
{
int result = FAIL;
if (SET_SHARED (attr, PTHREAD_PROCESS_SHARED) == 0 /* Set shared. */
&& rwlock_reinit (rwlock, attr) == PASS
&& SET_SHARED (attr, PTHREAD_PROCESS_PRIVATE) == 0
&& rwlock_reinit (rwlock, attr) == PASS)
result = PASS;
return result;
}
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