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1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
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6 * The contents of this file constitute Original Code as defined in and
7 * are subject to the Apple Public Source License Version 1.1 (the
8 * "License"). You may not use this file except in compliance with the
9 * License. Please obtain a copy of the License at
10 * http://www.apple.com/publicsource and read it before using this file.
11 *
12 * This Original Code and all software distributed under the License are
13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17 * License for the specific language governing rights and limitations
18 * under the License.
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19 *
20 * @APPLE_LICENSE_HEADER_END@
21 */
22/*
23 * @OSF_COPYRIGHT@
24 */
25/*
26 * Mach Operating System
27 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
28 * All Rights Reserved.
29 *
30 * Permission to use, copy, modify and distribute this software and its
31 * documentation is hereby granted, provided that both the copyright
32 * notice and this permission notice appear in all copies of the
33 * software, derivative works or modified versions, and any portions
34 * thereof, and that both notices appear in supporting documentation.
35 *
36 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
37 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
38 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
39 *
40 * Carnegie Mellon requests users of this software to return to
41 *
42 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
43 * School of Computer Science
44 * Carnegie Mellon University
45 * Pittsburgh PA 15213-3890
46 *
47 * any improvements or extensions that they make and grant Carnegie Mellon
48 * the rights to redistribute these changes.
49 */
50/*
51 */
52
53#ifndef _KERN_TIME_OUT_H_
54#define _KERN_TIME_OUT_H_
55
56/*
0b4e3aa0 57 * Mach tick-based timing.
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58 */
59
60#include <mach/boolean.h>
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61#include <kern/kern_types.h>
62
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63#include <sys/appleapiopts.h>
64
65#ifdef __APPLE_API_PRIVATE
66
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67extern int hz; /* num of ticks per second */
68extern int tick; /* num of usec per tick */
69
9bccf70c 70#ifdef MACH_KERNEL_PRIVATE
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71
72extern void hertz_tick(
73 boolean_t usermode, /* executing user code */
74 natural_t pc);
75
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76typedef void (*timeout_fcn_t)(void *);
77
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78/* Set timeout */
79extern void timeout(
80 timeout_fcn_t fcn,
81 void *param,
82 int interval);
83
84/* Cancel timeout */
85extern void untimeout(
86 timeout_fcn_t fcn,
87 void *param);
88
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89#endif /* MACH_KERNEL_PRIVATE */
90
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91#endif /* __APPLE_API_PRIVATE */
92
1c79356b 93#endif /* _KERN_TIME_OUT_H_ */