1/*
 2 * Copyright (c) 2001-2005 Apple Computer, 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#ifndef _MACH_MACH_TIME_H_
30#define _MACH_MACH_TIME_H_
31
32#include <mach/mach_types.h>
33#include <sys/cdefs.h>
34#include <Availability.h>
35
36struct mach_timebase_info {
37	uint32_t        numer;
38	uint32_t        denom;
39};
40
41typedef struct mach_timebase_info       *mach_timebase_info_t;
42typedef struct mach_timebase_info       mach_timebase_info_data_t;
43
44__BEGIN_DECLS
45
46kern_return_t           mach_timebase_info(
47	mach_timebase_info_t    info);
48
49kern_return_t           mach_wait_until(
50	uint64_t                deadline);
51
52
53uint64_t                        mach_absolute_time(void);
54
55__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
56uint64_t                        mach_approximate_time(void);
57
58/*
59 * like mach_absolute_time, but advances during sleep
60 */
61__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0) __TVOS_AVAILABLE(10.0) __WATCHOS_AVAILABLE(3.0)
62uint64_t                        mach_continuous_time(void);
63
64/*
65 * like mach_approximate_time, but advances during sleep
66 */
67__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0) __TVOS_AVAILABLE(10.0) __WATCHOS_AVAILABLE(3.0)
68uint64_t                        mach_continuous_approximate_time(void);
69
70/*
71 * variant of mach_continuous_time that uses speculative timebase
72 */
73
74__END_DECLS
75
76
77#endif /* _MACH_MACH_TIME_H_ */