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 | |
35 | struct lwp; |
36 | |
37 | typedef volatile const void *wchan_t; |
38 | |
39 | #if defined(_KERNEL) |
40 | |
41 | /* |
42 | * Synchronisation object operations set. |
43 | */ |
44 | typedef 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 | |
52 | struct 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 | |
58 | extern syncobj_t sched_syncobj; |
59 | extern syncobj_t mutex_syncobj; |
60 | extern syncobj_t rw_syncobj; |
61 | extern syncobj_t sleep_syncobj; |
62 | |
63 | #endif /* defined(_KERNEL) */ |
64 | |
65 | #endif /* !_SYS_SYNCOBJ_H_ */ |
66 | |