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75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
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* Copyright (C) 2014 René Kijewski <rene.kijewski@fu-berlin.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @ingroup pthread
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* @{
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*
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* @file
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* @brief Implementation of a fair, POSIX conforming reader/writer lock (attribute set).
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*
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* @author René Kijewski <rene.kijewski@fu-berlin.de>
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*
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* @}
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*/
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#include "pthread.h"
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#include <string.h>
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int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
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{
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if (attr == NULL) {
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return EINVAL;
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}
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memset(attr, 0, sizeof (*attr));
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return 0;
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}
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int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
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{
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if (attr == NULL) {
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return EINVAL;
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}
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(void) attr;
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return 0;
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}
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/* Return current setting of process-shared attribute of ATTR in PSHARED. */
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int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attr, int *pshared)
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{
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if (attr == NULL || pshared == NULL) {
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return EINVAL;
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}
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*pshared = attr->pshared;
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return 0;
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}
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int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared)
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{
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if (attr == NULL || (pshared != PTHREAD_PROCESS_SHARED && pshared != PTHREAD_PROCESS_PRIVATE)) {
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return EINVAL;
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}
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attr->pshared = pshared;
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return 0;
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}
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