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 */ 46extern mpqueue_head_t *timer_queue_assign( 47 uint64_t deadline); 48 49extern uint64_t timer_call_slop( 50 uint64_t deadline); 51 52/* Cancel an associated expiration deadline and specify new deadline */ 53extern void timer_queue_cancel( 54 mpqueue_head_t *queue, 55 uint64_t deadline, 56 uint64_t new_deadline); 57 58/* 59 * Invoked by platform, implemented by kernel. 60 */ 61 62/* Process deadline expiration for queue, returns new deadline */ 63extern uint64_t timer_queue_expire( 64 mpqueue_head_t *queue, 65 uint64_t deadline); 66 67/* Shutdown a timer queue and reassign existing activities */ 68extern void timer_queue_shutdown( 69 mpqueue_head_t *queue); 70 71/* Move timer requests from one queue to another */ 72extern int timer_queue_migrate( 73 mpqueue_head_t *from, 74 mpqueue_head_t *to); 75 76#endif /* MACH_KERNEL_PRIVATE */ 77 78#endif /* _KERN_TIMER_QUEUE_H_ */ 79