1*11be35a1SLionel Sambuc /* $NetBSD: lockme.c,v 1.1 2011/01/06 13:12:52 pooka Exp $ */
2*11be35a1SLionel Sambuc
3*11be35a1SLionel Sambuc /*-
4*11be35a1SLionel Sambuc * Copyright (c) 2011 The NetBSD Foundation, Inc.
5*11be35a1SLionel Sambuc * All rights reserved.
6*11be35a1SLionel Sambuc *
7*11be35a1SLionel Sambuc * Redistribution and use in source and binary forms, with or without
8*11be35a1SLionel Sambuc * modification, are permitted provided that the following conditions
9*11be35a1SLionel Sambuc * are met:
10*11be35a1SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
11*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer.
12*11be35a1SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
13*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
14*11be35a1SLionel Sambuc * documentation and/or other materials provided with the distribution.
15*11be35a1SLionel Sambuc *
16*11be35a1SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
17*11be35a1SLionel Sambuc * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18*11be35a1SLionel Sambuc * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19*11be35a1SLionel Sambuc * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20*11be35a1SLionel Sambuc * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
21*11be35a1SLionel Sambuc * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22*11be35a1SLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
23*11be35a1SLionel Sambuc * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24*11be35a1SLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25*11be35a1SLionel Sambuc * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26*11be35a1SLionel Sambuc * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27*11be35a1SLionel Sambuc * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28*11be35a1SLionel Sambuc */
29*11be35a1SLionel Sambuc
30*11be35a1SLionel Sambuc #include <sys/cdefs.h>
31*11be35a1SLionel Sambuc #if !defined(lint)
32*11be35a1SLionel Sambuc __RCSID("$NetBSD: lockme.c,v 1.1 2011/01/06 13:12:52 pooka Exp $");
33*11be35a1SLionel Sambuc #endif /* !lint */
34*11be35a1SLionel Sambuc
35*11be35a1SLionel Sambuc #include <sys/param.h>
36*11be35a1SLionel Sambuc #include <sys/kmem.h>
37*11be35a1SLionel Sambuc #include <sys/mutex.h>
38*11be35a1SLionel Sambuc #include <sys/rwlock.h>
39*11be35a1SLionel Sambuc
40*11be35a1SLionel Sambuc #include "kernspace.h"
41*11be35a1SLionel Sambuc
42*11be35a1SLionel Sambuc struct somemem {
43*11be35a1SLionel Sambuc char foo;
44*11be35a1SLionel Sambuc kmutex_t mutexetum;
45*11be35a1SLionel Sambuc char oof;
46*11be35a1SLionel Sambuc };
47*11be35a1SLionel Sambuc
48*11be35a1SLionel Sambuc void
rumptest_lockme(enum locktest what)49*11be35a1SLionel Sambuc rumptest_lockme(enum locktest what)
50*11be35a1SLionel Sambuc {
51*11be35a1SLionel Sambuc struct somemem *some;
52*11be35a1SLionel Sambuc kmutex_t mtx;
53*11be35a1SLionel Sambuc krwlock_t rw;
54*11be35a1SLionel Sambuc
55*11be35a1SLionel Sambuc rw_init(&rw);
56*11be35a1SLionel Sambuc mutex_init(&mtx, MUTEX_DEFAULT, IPL_NONE);
57*11be35a1SLionel Sambuc
58*11be35a1SLionel Sambuc switch (what) {
59*11be35a1SLionel Sambuc case LOCKME_MTX:
60*11be35a1SLionel Sambuc mutex_enter(&mtx);
61*11be35a1SLionel Sambuc mutex_enter(&mtx);
62*11be35a1SLionel Sambuc break;
63*11be35a1SLionel Sambuc case LOCKME_RWDOUBLEX:
64*11be35a1SLionel Sambuc rw_enter(&rw, RW_WRITER);
65*11be35a1SLionel Sambuc rw_enter(&rw, RW_WRITER);
66*11be35a1SLionel Sambuc break;
67*11be35a1SLionel Sambuc case LOCKME_RWRX:
68*11be35a1SLionel Sambuc rw_enter(&rw, RW_READER);
69*11be35a1SLionel Sambuc rw_enter(&rw, RW_WRITER);
70*11be35a1SLionel Sambuc break;
71*11be35a1SLionel Sambuc case LOCKME_RWXR:
72*11be35a1SLionel Sambuc rw_enter(&rw, RW_WRITER);
73*11be35a1SLionel Sambuc rw_enter(&rw, RW_READER);
74*11be35a1SLionel Sambuc break;
75*11be35a1SLionel Sambuc case LOCKME_DOUBLEINIT:
76*11be35a1SLionel Sambuc mutex_init(&mtx, MUTEX_DEFAULT, IPL_NONE);
77*11be35a1SLionel Sambuc break;
78*11be35a1SLionel Sambuc case LOCKME_DOUBLEFREE:
79*11be35a1SLionel Sambuc mutex_destroy(&mtx);
80*11be35a1SLionel Sambuc mutex_destroy(&mtx);
81*11be35a1SLionel Sambuc break;
82*11be35a1SLionel Sambuc case LOCKME_DESTROYHELD:
83*11be35a1SLionel Sambuc mutex_enter(&mtx);
84*11be35a1SLionel Sambuc mutex_destroy(&mtx);
85*11be35a1SLionel Sambuc break;
86*11be35a1SLionel Sambuc case LOCKME_MEMFREE:
87*11be35a1SLionel Sambuc some = kmem_alloc(sizeof(*some), KM_SLEEP);
88*11be35a1SLionel Sambuc mutex_init(&some->mutexetum, MUTEX_DEFAULT, IPL_NONE);
89*11be35a1SLionel Sambuc kmem_free(some, sizeof(*some));
90*11be35a1SLionel Sambuc break;
91*11be35a1SLionel Sambuc }
92*11be35a1SLionel Sambuc }
93