1/*	$NetBSD: syncobj.h,v 1.13 2020/03/26 21:15:14 ad Exp $	*/
 2
 3/*-
 4 * Copyright (c) 2007, 2008, 2020 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_LIFO	0x04
56#define	SOBJ_SLEEPQ_NULL	0x08
57
58extern syncobj_t	cv_syncobj;
59extern syncobj_t	kpause_syncobj;
60extern syncobj_t	lwp_park_syncobj;
61extern syncobj_t	mutex_syncobj;
62extern syncobj_t	rw_syncobj;
63extern syncobj_t	sched_syncobj;
64extern syncobj_t	select_syncobj;
65extern syncobj_t	sleep_syncobj;
66
67#endif /* defined(_KERNEL) */
68
69#endif /* !_SYS_SYNCOBJ_H_ */