fb11e647
 vrobic
reseau statique a...
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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 Attributes for pthread mutexes.
* @author René Kijewski <rene.kijewski@fu-berlin.de>
* @}
*/
#include "pthread.h"
#include <string.h>
int pthread_mutexattr_init(pthread_mutexattr_t *attr)
{
if (attr == NULL) {
return EINVAL;
}
memset(attr, 0, sizeof (*attr));
return 0;
}
int pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
{
if (attr == NULL) {
return EINVAL;
}
(void) attr;
return 0;
}
int pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr, int *pshared)
{
if (attr == NULL || pshared == NULL) {
return EINVAL;
}
*pshared = attr->pshared;
return 0;
}
int pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared)
{
if (attr == NULL || (pshared != PTHREAD_PROCESS_SHARED &&
pshared != PTHREAD_PROCESS_PRIVATE)) {
return EINVAL;
}
attr->pshared = pshared;
return 0;
}
int pthread_mutexattr_gettype(const pthread_mutexattr_t *attr, int *kind)
{
if (attr == NULL || kind == NULL) {
return EINVAL;
}
*kind = attr->kind;
return 0;
}
int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind)
{
if (attr == NULL || (kind != PTHREAD_MUTEX_NORMAL &&
kind != PTHREAD_MUTEX_RECURSIVE &&
kind != PTHREAD_MUTEX_ERRORCHECK)) {
return EINVAL;
}
if (kind != PTHREAD_MUTEX_NORMAL) {
/* only "normal" mutexes are implemented, yet */
return EINVAL;
}
attr->kind = kind;
return 0;
}
int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *attr, int *protocol)
{
if (attr == NULL || protocol == NULL) {
return EINVAL;
}
*protocol = attr->protocol;
return 0;
}
int pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, int protocol)
{
if (attr == NULL || (protocol != PTHREAD_PRIO_NONE &&
protocol != PTHREAD_PRIO_INHERIT &&
protocol != PTHREAD_PRIO_PROTECT)) {
return EINVAL;
}
if (protocol != PTHREAD_PRIO_NONE) {
/* priority inheritance is not supported, yet */
return EINVAL;
}
attr->protocol = protocol;
return 0;
}
int pthread_mutexattr_getrobust(const pthread_mutexattr_t *attr, int *robustness)
{
if (attr == NULL || robustness == NULL) {
return EINVAL;
}
*robustness = attr->robustness;
return 0;
}
int pthread_mutexattr_setrobust(pthread_mutexattr_t *attr, int robustness)
{
if (attr == NULL || (robustness != PTHREAD_MUTEX_STALLED &&
robustness != PTHREAD_MUTEX_ROBUST)) {
return EINVAL;
}
if (robustness != PTHREAD_MUTEX_STALLED) {
/* robust mutexes are not supported, yet */
return EINVAL;
}
attr->robustness = robustness;
return 0;
}
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