2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#include "lint.h"
2N/A#include "thr_uberdata.h"
2N/A
2N/A/*
2N/A * UNIX98
2N/A * pthread_rwlockattr_init: allocates the mutex attribute object and
2N/A * initializes it with the default values.
2N/A */
2N/Aint
2N/Apthread_rwlockattr_init(pthread_rwlockattr_t *attr)
2N/A{
2N/A rwlattr_t *ap;
2N/A
2N/A if ((ap = lmalloc(sizeof (rwlattr_t))) == NULL)
2N/A return (ENOMEM);
2N/A ap->pshared = DEFAULT_TYPE;
2N/A attr->__pthread_rwlockattrp = ap;
2N/A return (0);
2N/A}
2N/A
2N/A/*
2N/A * UNIX98
2N/A * pthread_rwlockattr_destroy: frees the rwlock attribute object and
2N/A * invalidates it with NULL value.
2N/A */
2N/Aint
2N/Apthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
2N/A{
2N/A if (attr == NULL || attr->__pthread_rwlockattrp == NULL)
2N/A return (EINVAL);
2N/A lfree(attr->__pthread_rwlockattrp, sizeof (rwlattr_t));
2N/A attr->__pthread_rwlockattrp = NULL;
2N/A return (0);
2N/A}
2N/A
2N/A/*
2N/A * UNIX98
2N/A * pthread_rwlockattr_setpshared: sets the shared attr to PRIVATE or SHARED.
2N/A */
2N/Aint
2N/Apthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared)
2N/A{
2N/A rwlattr_t *ap;
2N/A
2N/A if (attr != NULL && (ap = attr->__pthread_rwlockattrp) != NULL &&
2N/A (pshared == PTHREAD_PROCESS_PRIVATE ||
2N/A pshared == PTHREAD_PROCESS_SHARED)) {
2N/A ap->pshared = pshared;
2N/A return (0);
2N/A }
2N/A return (EINVAL);
2N/A}
2N/A
2N/A/*
2N/A * UNIX98
2N/A * pthread_rwlockattr_getpshared: gets the shared attr.
2N/A */
2N/Aint
2N/Apthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attr, int *pshared)
2N/A{
2N/A rwlattr_t *ap;
2N/A
2N/A if (attr != NULL && (ap = attr->__pthread_rwlockattrp) != NULL &&
2N/A pshared != NULL) {
2N/A *pshared = ap->pshared;
2N/A return (0);
2N/A }
2N/A return (EINVAL);
2N/A}
2N/A
2N/A/*
2N/A * UNIX98
2N/A * pthread_rwlock_init: Initializes the rwlock object. It copies the
2N/A * pshared attr into type argument and calls rwlock_init().
2N/A */
2N/Aint
2N/Apthread_rwlock_init(pthread_rwlock_t *_RESTRICT_KYWD rwlock,
2N/A const pthread_rwlockattr_t *_RESTRICT_KYWD attr)
2N/A{
2N/A rwlattr_t *ap;
2N/A int type;
2N/A
2N/A if (attr == NULL)
2N/A type = DEFAULT_TYPE;
2N/A else if ((ap = attr->__pthread_rwlockattrp) != NULL)
2N/A type = ap->pshared;
2N/A else
2N/A return (EINVAL);
2N/A
2N/A return (rwlock_init((rwlock_t *)rwlock, type, NULL));
2N/A}