projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| c910b4d9 A |
1 | /* |
| 2 | * Copyright (c) 2008 Apple Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 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. | |
| 14 | * | |
| 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 | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 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. | |
| 25 | * | |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| 27 | */ | |
| 28 | /* | |
| 29 | * Timer queue support routines. | |
| 30 | */ | |
| 31 | ||
| 32 | #ifndef _KERN_TIMER_QUEUE_H_ | |
| 33 | #define _KERN_TIMER_QUEUE_H_ | |
| 34 | ||
| 35 | #include <mach/mach_types.h> | |
| 36 | ||
| 37 | #ifdef MACH_KERNEL_PRIVATE | |
| 38 | ||
| 39 | #include <kern/queue.h> | |
| 40 | ||
| 41 | /* | |
| 42 | * Invoked by kernel, implemented by platform. | |
| 43 | */ | |
| 44 | ||
| 45 | /* Request an expiration deadline, returns queue association */ | |
| 6d2010ae A |
46 | extern mpqueue_head_t *timer_queue_assign( |
| 47 | uint64_t deadline); | |
| 48 | ||
| 49 | extern uint64_t timer_call_slop( | |
| c910b4d9 A |
50 | uint64_t deadline); |
| 51 | ||
| 52 | /* Cancel an associated expiration deadline and specify new deadline */ | |
| 6d2010ae A |
53 | extern void timer_queue_cancel( |
| 54 | mpqueue_head_t *queue, | |
| 55 | uint64_t deadline, | |
| 56 | uint64_t new_deadline); | |
| c910b4d9 A |
57 | |
| 58 | /* | |
| 59 | * Invoked by platform, implemented by kernel. | |
| 60 | */ | |
| 61 | ||
| 62 | /* Process deadline expiration for queue, returns new deadline */ | |
| 63 | extern uint64_t timer_queue_expire( | |
| 6d2010ae A |
64 | mpqueue_head_t *queue, |
| 65 | uint64_t deadline); | |
| c910b4d9 A |
66 | |
| 67 | /* Shutdown a timer queue and reassign existing activities */ | |
| 6d2010ae A |
68 | extern void timer_queue_shutdown( |
| 69 | mpqueue_head_t *queue); | |
| 70 | ||
| 71 | /* Move timer requests from one queue to another */ | |
| 72 | extern int timer_queue_migrate( | |
| 73 | mpqueue_head_t *from, | |
| 74 | mpqueue_head_t *to); | |
| c910b4d9 A |
75 | |
| 76 | #endif /* MACH_KERNEL_PRIVATE */ | |
| 77 | ||
| 78 | #endif /* _KERN_TIMER_QUEUE_H_ */ |