| 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 | |