projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 91447636 | 2 | * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. |
| 1c79356b | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 1c79356b | 5 | * |
| 2d21ac55 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 8f6c56a5 | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 8f6c56a5 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b | 27 | */ |
| 1c79356b A |
28 | /* |
| 29 | * @OSF_COPYRIGHT@ | |
| 30 | */ | |
| 31 | /* | |
| 32 | * Mach Operating System | |
| 33 | * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University | |
| 34 | * All Rights Reserved. | |
| 35 | * | |
| 36 | * Permission to use, copy, modify and distribute this software and its | |
| 37 | * documentation is hereby granted, provided that both the copyright | |
| 38 | * notice and this permission notice appear in all copies of the | |
| 39 | * software, derivative works or modified versions, and any portions | |
| 40 | * thereof, and that both notices appear in supporting documentation. | |
| 41 | * | |
| 42 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
| 43 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
| 44 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 45 | * | |
| 46 | * Carnegie Mellon requests users of this software to return to | |
| 47 | * | |
| 48 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 49 | * School of Computer Science | |
| 50 | * Carnegie Mellon University | |
| 51 | * Pittsburgh PA 15213-3890 | |
| 52 | * | |
| 53 | * any improvements or extensions that they make and grant Carnegie Mellon | |
| 54 | * the rights to redistribute these changes. | |
| 55 | */ | |
| 56 | /* | |
| 57 | * File: kern/lock.h | |
| 58 | * Author: Avadis Tevanian, Jr., Michael Wayne Young | |
| 59 | * Date: 1985 | |
| 60 | * | |
| 61 | * Higher Level Locking primitives definitions | |
| 62 | */ | |
| 63 | ||
| 91447636 A |
64 | #ifdef KERNEL_PRIVATE |
| 65 | ||
| 1c79356b A |
66 | #ifndef _KERN_LOCK_H_ |
| 67 | #define _KERN_LOCK_H_ | |
| 68 | ||
| 1c79356b A |
69 | #include <kern/simple_lock.h> |
| 70 | #include <machine/lock.h> | |
| 91447636 | 71 | #include <sys/cdefs.h> |
| 1c79356b | 72 | |
| 91447636 | 73 | __BEGIN_DECLS |
| 9bccf70c | 74 | |
| 91447636 | 75 | #ifndef MACH_KERNEL_PRIVATE |
| 9bccf70c | 76 | |
| 91447636 | 77 | typedef struct __lock__ lock_t; |
| 1c79356b | 78 | |
| 91447636 | 79 | #else /* MACH_KERNEL_PRIVATE */ |
| 1c79356b | 80 | |
| 91447636 A |
81 | extern void lock_init( |
| 82 | lock_t *lock, | |
| 83 | boolean_t can_sleep, | |
| 84 | unsigned short tag0, | |
| 85 | unsigned short tag1); | |
| 1c79356b | 86 | |
| 9bccf70c A |
87 | #endif /* MACH_KERNEL_PRIVATE */ |
| 88 | ||
| 91447636 A |
89 | extern lock_t *lock_alloc( |
| 90 | boolean_t can_sleep, | |
| 91 | unsigned short tag0, | |
| 92 | unsigned short tag1); | |
| 9bccf70c | 93 | |
| 91447636 A |
94 | extern void lock_free( |
| 95 | lock_t *lock); | |
| 9bccf70c | 96 | |
| 91447636 A |
97 | extern void lock_write( |
| 98 | lock_t *lock); | |
| 1c79356b | 99 | |
| 91447636 A |
100 | extern void lock_read( |
| 101 | lock_t *lock); | |
| 1c79356b | 102 | |
| 91447636 A |
103 | extern void lock_done( |
| 104 | lock_t *lock); | |
| 1c79356b | 105 | |
| 91447636 A |
106 | extern void lock_write_to_read( |
| 107 | lock_t *lock); | |
| 1c79356b A |
108 | |
| 109 | #define lock_read_done(l) lock_done(l) | |
| 110 | #define lock_write_done(l) lock_done(l) | |
| 111 | ||
| 91447636 A |
112 | extern boolean_t lock_read_to_write( |
| 113 | lock_t *lock); | |
| 114 | ||
| 115 | ||
| 116 | /* Sleep, unlocking and then relocking a usimple_lock in the process */ | |
| 117 | extern wait_result_t thread_sleep_usimple_lock( | |
| 118 | event_t event, | |
| 119 | usimple_lock_t lock, | |
| 120 | wait_interrupt_t interruptible); | |
| 121 | ||
| 91447636 A |
122 | /* Sleep, unlocking and then relocking a write lock in the process */ |
| 123 | extern wait_result_t thread_sleep_lock_write( | |
| 124 | event_t event, | |
| 125 | lock_t *lock, | |
| 126 | wait_interrupt_t interruptible); | |
| 127 | __END_DECLS | |
| 128 | ||
| 129 | #ifdef MACH_KERNEL_PRIVATE | |
| 130 | ||
| 131 | extern wait_result_t thread_sleep_fast_usimple_lock( | |
| 132 | event_t event, | |
| 133 | simple_lock_t lock, | |
| 134 | wait_interrupt_t interruptible); | |
| 135 | #endif /* MACH_KERNEL_PRIVATE */ | |
| 1c79356b A |
136 | |
| 137 | #endif /* _KERN_LOCK_H_ */ | |
| 91447636 A |
138 | |
| 139 | #endif /* KERNEL_PRIVATE */ |