1 | /* $NetBSD: linux_futex.h,v 1.7 2013/04/16 23:03:05 christos Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2005 Emmanuel Dreyfus, all rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * 3. All advertising materials mentioning features or use of this software |
15 | * must display the following acknowledgement: |
16 | * This product includes software developed by Emmanuel Dreyfus |
17 | * 4. The name of the author may not be used to endorse or promote |
18 | * products derived from this software without specific prior written |
19 | * permission. |
20 | * |
21 | * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS |
25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
31 | * POSSIBILITY OF SUCH DAMAGE. |
32 | */ |
33 | |
34 | #ifndef _LINUX_FUTEX_H |
35 | #define _LINUX_FUTEX_H |
36 | |
37 | #define LINUX_FUTEX_WAIT 0 |
38 | #define LINUX_FUTEX_WAKE 1 |
39 | #define LINUX_FUTEX_FD 2 |
40 | #define LINUX_FUTEX_REQUEUE 3 |
41 | #define LINUX_FUTEX_CMP_REQUEUE 4 |
42 | #define LINUX_FUTEX_WAKE_OP 5 |
43 | #define LINUX_FUTEX_LOCK_PI 6 |
44 | #define LINUX_FUTEX_UNLOCK_PI 7 |
45 | #define LINUX_FUTEX_TRYLOCK_PI 8 |
46 | #define LINUX_FUTEX_WAIT_BITSET 9 |
47 | #define LINUX_FUTEX_WAKE_BITSET 10 |
48 | #define LINUX_FUTEX_WAIT_REQUEUE_PI 11 |
49 | #define LINUX_FUTEX_CMP_REQUEUE_PI 12 |
50 | |
51 | #define LINUX_FUTEX_PRIVATE_FLAG 128 |
52 | #define LINUX_FUTEX_CLOCK_REALTIME 256 |
53 | #define LINUX_FUTEX_CMD_MASK \ |
54 | (~(LINUX_FUTEX_PRIVATE_FLAG|LINUX_FUTEX_CLOCK_REALTIME)) |
55 | |
56 | #define FUTEX_OP_SET 0 |
57 | #define FUTEX_OP_ADD 1 |
58 | #define FUTEX_OP_OR 2 |
59 | #define FUTEX_OP_ANDN 3 |
60 | #define FUTEX_OP_XOR 4 |
61 | #define FUTEX_OP_OPARG_SHIFT 8 |
62 | |
63 | #define FUTEX_OP_CMP_EQ 0 |
64 | #define FUTEX_OP_CMP_NE 1 |
65 | #define FUTEX_OP_CMP_LT 2 |
66 | #define FUTEX_OP_CMP_LE 3 |
67 | #define FUTEX_OP_CMP_GT 4 |
68 | #define FUTEX_OP_CMP_GE 5 |
69 | |
70 | struct linux_robust_list { |
71 | struct linux_robust_list *next; |
72 | }; |
73 | |
74 | struct linux_robust_list_head { |
75 | struct linux_robust_list list; |
76 | unsigned long futex_offset; |
77 | struct linux_robust_list *pending_list; |
78 | }; |
79 | |
80 | #define FUTEX_WAITERS 0x80000000 |
81 | #define FUTEX_OWNER_DIED 0x40000000 |
82 | #define FUTEX_TID_MASK 0x3fffffff |
83 | |
84 | #define FUTEX_BITSET_MATCH_ANY 0xffffffff |
85 | |
86 | void release_futexes(struct lwp *); |
87 | struct linux_sys_futex_args; |
88 | int linux_do_futex(struct lwp *, const struct linux_sys_futex_args *, |
89 | register_t *, struct timespec *); |
90 | void linux_futex_init(void); |
91 | void linux_futex_fini(void); |
92 | |
93 | #endif /* !_LINUX_FUTEX_H */ |
94 | |