lock.h revision 1.1 
1/* $NetBSD: lock.h,v 1.1 2007/12/29 14:38:34 jmcneill Exp $ */
2
3/*-
4 * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca>
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 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *        This product includes software developed by Jared D. McNeill.
18 * 4. Neither the name of The NetBSD Foundation nor the names of its
19 *    contributors may be used to endorse or promote products derived
20 *    from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef _ARCH_USERMODE_INCLUDE_LOCK_H
36#define _ARCH_USERMODE_INCLUDE_LOCK_H
37
38__inline static void
39__cpu_simple_lock_init(__cpu_simple_lock_t *lockp)
40{
41}
42
43__inline static void
44__cpu_simple_lock(__cpu_simple_lock_t *lockp)
45{
46}
47
48__inline static void
49__cpu_simple_unlock(__cpu_simple_lock_t *lockp)
50{
51}
52
53__inline static int
54__SIMPLELOCK_LOCKED_P(__cpu_simple_lock_t *lockp)
55{
56	return *lockp == __SIMPLELOCK_LOCKED;
57}
58
59__inline static int
60__SIMPLELOCK_UNLOCKED_P(__cpu_simple_lock_t *lockp)
61{
62	return *lockp == __SIMPLELOCK_UNLOCKED;
63}
64
65__inline static int
66__cpu_simple_lock_try(__cpu_simple_lock_t *lockp)
67{
68	return __SIMPLELOCK_UNLOCKED;
69}
70
71#endif /* !_ARCH_USERMODE_INCLUDE_LOCK_H */
72