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_ */