1/* $NetBSD: syncobj.h,v 1.8 2009/10/21 21:12:07 rmind Exp $ */
2
3/*-
4 * Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#if !defined(_SYS_SYNCOBJ_H_)
33#define _SYS_SYNCOBJ_H_
34
35struct lwp;
36
37typedef volatile const void *wchan_t;
38
39#if defined(_KERNEL)
40
41/*
42 * Synchronisation object operations set.
43 */
44typedef struct syncobj {
45 u_int sobj_flag;
46 void (*sobj_unsleep)(struct lwp *, bool);
47 void (*sobj_changepri)(struct lwp *, pri_t);
48 void (*sobj_lendpri)(struct lwp *, pri_t);
49 struct lwp *(*sobj_owner)(wchan_t);
50} syncobj_t;
51
52struct lwp *syncobj_noowner(wchan_t);
53
54#define SOBJ_SLEEPQ_SORTED 0x01
55#define SOBJ_SLEEPQ_FIFO 0x02
56#define SOBJ_SLEEPQ_LIFO 0x04
57
58extern syncobj_t sched_syncobj;
59extern syncobj_t mutex_syncobj;
60extern syncobj_t rw_syncobj;
61extern syncobj_t sleep_syncobj;
62
63#endif /* defined(_KERNEL) */
64
65#endif /* !_SYS_SYNCOBJ_H_ */
66