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/* $OpenBSD: rthread_rwlockattr.c,v 1.2 2012/02/15 04:58:42 guenther Exp $ */
/*
* Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* rwlock attributes
*/
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include "rthread.h"
int
pthread_rwlockattr_init(pthread_rwlockattr_t *attrp)
{
pthread_rwlockattr_t attr;
attr = calloc(1, sizeof(*attr));
if (!attr)
return (errno);
attr->pshared = PTHREAD_PROCESS_PRIVATE;
*attrp = attr;
return (0);
}
int
pthread_rwlockattr_destroy(pthread_rwlockattr_t *attrp)
{
free(*attrp);
*attrp = NULL;
return (0);
}
int
pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attrp, int *pshared)
{
*pshared = (*attrp)->pshared;
return (0);
}
int
pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attrp, int pshared)
{
/* only PTHREAD_PROCESS_PRIVATE is supported */
if (pshared != PTHREAD_PROCESS_PRIVATE)
return (EINVAL);
(*attrp)->pshared = pshared;
return (0);
}
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