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