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/*
* Copyright (C) 2014 René Kijewski <rene.kijewski@fu-berlin.de>
*
* This 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.
*
* This 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @ingroup pthread
* @{
*
* @file
* @brief Implementation of a fair, POSIX conforming reader/writer lock (attribute set).
*
* @author René Kijewski <rene.kijewski@fu-berlin.de>
*
* @}
*/
#include "pthread.h"
#include <string.h>
int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
{
if (attr == NULL) {
return EINVAL;
}
memset(attr, 0, sizeof (*attr));
return 0;
}
int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
{
if (attr == NULL) {
return EINVAL;
}
(void) attr;
return 0;
}
/* Return current setting of process-shared attribute of ATTR in PSHARED. */
int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attr, int *pshared)
{
if (attr == NULL || pshared == NULL) {
return EINVAL;
}
*pshared = attr->pshared;
return 0;
}
int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared)
{
if (attr == NULL || (pshared != PTHREAD_PROCESS_SHARED && pshared != PTHREAD_PROCESS_PRIVATE)) {
return EINVAL;
}
attr->pshared = pshared;
return 0;
}
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