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