1/*	$NetBSD: lockme.c,v 1.1 2011/01/06 13:12:52 pooka Exp $	*/
2
3/*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
17 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31#if !defined(lint)
32__RCSID("$NetBSD: lockme.c,v 1.1 2011/01/06 13:12:52 pooka Exp $");
33#endif /* !lint */
34
35#include <sys/param.h>
36#include <sys/kmem.h>
37#include <sys/mutex.h>
38#include <sys/rwlock.h>
39
40#include "kernspace.h"
41
42struct somemem {
43	char foo;
44	kmutex_t mutexetum;
45	char oof;
46};
47
48void
49rumptest_lockme(enum locktest what)
50{
51	struct somemem *some;
52	kmutex_t mtx;
53	krwlock_t rw;
54
55	rw_init(&rw);
56	mutex_init(&mtx, MUTEX_DEFAULT, IPL_NONE);
57
58	switch (what) {
59	case LOCKME_MTX:
60		mutex_enter(&mtx);
61		mutex_enter(&mtx);
62		break;
63	case LOCKME_RWDOUBLEX:
64		rw_enter(&rw, RW_WRITER);
65		rw_enter(&rw, RW_WRITER);
66		break;
67	case LOCKME_RWRX:
68		rw_enter(&rw, RW_READER);
69		rw_enter(&rw, RW_WRITER);
70		break;
71	case LOCKME_RWXR:
72		rw_enter(&rw, RW_WRITER);
73		rw_enter(&rw, RW_READER);
74		break;
75	case LOCKME_DOUBLEINIT:
76		mutex_init(&mtx, MUTEX_DEFAULT, IPL_NONE);
77		break;
78	case LOCKME_DOUBLEFREE:
79		mutex_destroy(&mtx);
80		mutex_destroy(&mtx);
81		break;
82	case LOCKME_DESTROYHELD:
83		mutex_enter(&mtx);
84		mutex_destroy(&mtx);
85		break;
86	case LOCKME_MEMFREE:
87		some = kmem_alloc(sizeof(*some), KM_SLEEP);
88		mutex_init(&some->mutexetum, MUTEX_DEFAULT, IPL_NONE);
89		kmem_free(some, sizeof(*some));
90		break;
91	}
92}
93