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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 * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
7 *
8 * This file contains Original Code and/or Modifications of Original Code
9 * as defined in and that are subject to the Apple Public Source License
10 * Version 2.0 (the 'License'). You may not use this file except in
11 * compliance with the License. Please obtain a copy of the License at
12 * http://www.opensource.apple.com/apsl/ and read it before using this
13 * file.
14 *
15 * The Original Code and all software distributed under the License are
16 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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17 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
18 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
20 * Please see the License for the specific language governing rights and
21 * limitations under the License.
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22 *
23 * @APPLE_LICENSE_HEADER_END@
24 */
25/*
26 * @OSF_COPYRIGHT@
27 */
28/*
29 * Mach Operating System
30 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
31 * All Rights Reserved.
32 *
33 * Permission to use, copy, modify and distribute this software and its
34 * documentation is hereby granted, provided that both the copyright
35 * notice and this permission notice appear in all copies of the
36 * software, derivative works or modified versions, and any portions
37 * thereof, and that both notices appear in supporting documentation.
38 *
39 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
40 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
41 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
42 *
43 * Carnegie Mellon requests users of this software to return to
44 *
45 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
46 * School of Computer Science
47 * Carnegie Mellon University
48 * Pittsburgh PA 15213-3890
49 *
50 * any improvements or extensions that they make and grant Carnegie Mellon
51 * the rights to redistribute these changes.
52 */
53/*
54 */
55
56#ifndef _KERN_TIME_OUT_H_
57#define _KERN_TIME_OUT_H_
58
59/*
0b4e3aa0 60 * Mach tick-based timing.
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61 */
62
63#include <mach/boolean.h>
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64#include <kern/kern_types.h>
65
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66#include <sys/appleapiopts.h>
67
68#ifdef __APPLE_API_PRIVATE
69
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70extern int hz; /* num of ticks per second */
71extern int tick; /* num of usec per tick */
72
9bccf70c 73#ifdef MACH_KERNEL_PRIVATE
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74
75extern void hertz_tick(
76 boolean_t usermode, /* executing user code */
77 natural_t pc);
78
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79typedef void (*timeout_fcn_t)(void *);
80
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81/* Set timeout */
82extern void timeout(
83 timeout_fcn_t fcn,
84 void *param,
85 int interval);
86
87/* Cancel timeout */
88extern void untimeout(
89 timeout_fcn_t fcn,
90 void *param);
91
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92#endif /* MACH_KERNEL_PRIVATE */
93
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94#endif /* __APPLE_API_PRIVATE */
95
1c79356b 96#endif /* _KERN_TIME_OUT_H_ */