1/*-
 2 * SPDX-License-Identifier: BSD-2-Clause
 3 *
 4 * Copyright (c) 2010, David Xu <davidxu@freebsd.org>
 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 unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30#ifndef _SYS__UMTX_H_
31#define	_SYS__UMTX_H_
32
33#include <sys/_types.h>
34#include <sys/_timespec.h>
35
36struct umtx {
37	volatile unsigned long	u_owner;	/* Owner of the mutex. */
38};
39
40struct umutex {
41	volatile __lwpid_t	m_owner;	/* Owner of the mutex */
42	__uint32_t		m_flags;	/* Flags of the mutex */
43	__uint32_t		m_ceilings[2];	/* Priority protect ceiling */
44	__uintptr_t		m_rb_lnk;	/* Robust linkage */
45#ifndef __LP64__
46	__uint32_t		m_pad;
47#endif
48	__uint32_t		m_spare[2];
49};
50
51struct ucond {
52	volatile __uint32_t	c_has_waiters;	/* Has waiters in kernel */
53	__uint32_t		c_flags;	/* Flags of the condition variable */
54	__uint32_t              c_clockid;	/* Clock id */
55	__uint32_t              c_spare[1];	/* Spare space */
56};
57
58struct urwlock {
59	volatile __int32_t	rw_state;
60	__uint32_t		rw_flags;
61	__uint32_t		rw_blocked_readers;
62	__uint32_t		rw_blocked_writers;
63	__uint32_t		rw_spare[4];
64};
65
66struct _usem {
67	volatile __uint32_t	_has_waiters;
68	volatile __uint32_t	_count;
69	__uint32_t		_flags;
70};
71
72struct _usem2 {
73	volatile __uint32_t	_count;		/* Waiters flag in high bit. */
74	__uint32_t		_flags;
75};
76
77struct _umtx_time {
78	struct timespec		_timeout;
79	__uint32_t		_flags;
80	__uint32_t		_clockid;
81};
82
83#endif /* !_SYS__UMTX_H_ */