93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/* $NetBSD: lockme.c,v 1.1 2011/01/06 13:12:52 pooka Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if !defined(lint)
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__RCSID("$NetBSD: lockme.c,v 1.1 2011/01/06 13:12:52 pooka Exp $");
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#endif /* !lint */
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#include <sys/param.h>
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#include <sys/kmem.h>
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#include <sys/mutex.h>
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#include <sys/rwlock.h>
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#include "kernspace.h"
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struct somemem {
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char foo;
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kmutex_t mutexetum;
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char oof;
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};
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void
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rumptest_lockme(enum locktest what)
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{
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struct somemem *some;
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kmutex_t mtx;
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krwlock_t rw;
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rw_init(&rw);
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mutex_init(&mtx, MUTEX_DEFAULT, IPL_NONE);
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switch (what) {
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case LOCKME_MTX:
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mutex_enter(&mtx);
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mutex_enter(&mtx);
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break;
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case LOCKME_RWDOUBLEX:
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rw_enter(&rw, RW_WRITER);
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rw_enter(&rw, RW_WRITER);
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break;
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case LOCKME_RWRX:
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rw_enter(&rw, RW_READER);
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rw_enter(&rw, RW_WRITER);
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break;
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case LOCKME_RWXR:
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rw_enter(&rw, RW_WRITER);
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rw_enter(&rw, RW_READER);
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break;
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case LOCKME_DOUBLEINIT:
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mutex_init(&mtx, MUTEX_DEFAULT, IPL_NONE);
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break;
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case LOCKME_DOUBLEFREE:
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mutex_destroy(&mtx);
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mutex_destroy(&mtx);
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break;
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case LOCKME_DESTROYHELD:
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mutex_enter(&mtx);
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mutex_destroy(&mtx);
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break;
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case LOCKME_MEMFREE:
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some = kmem_alloc(sizeof(*some), KM_SLEEP);
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mutex_init(&some->mutexetum, MUTEX_DEFAULT, IPL_NONE);
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kmem_free(some, sizeof(*some));
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break;
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}
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}
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