1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/* $OpenBSD: ktime.h,v 1.5 2020/07/29 09:52:21 jsg Exp $ */
/*
* Copyright (c) 2013, 2014, 2015 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LINUX_KTIME_H
#define _LINUX_KTIME_H
#include <sys/time.h>
#include <linux/time.h>
#include <linux/jiffies.h>
typedef int64_t ktime_t;
static inline ktime_t
ktime_get(void)
{
struct timespec ts;
nanouptime(&ts);
return TIMESPEC_TO_NSEC(&ts);
}
static inline ktime_t
ktime_get_raw(void)
{
struct timespec ts;
nanouptime(&ts);
return TIMESPEC_TO_NSEC(&ts);
}
static inline int64_t
ktime_to_ms(ktime_t k)
{
return k / NSEC_PER_MSEC;
}
static inline int64_t
ktime_to_us(ktime_t k)
{
return k / NSEC_PER_USEC;
}
static inline int64_t
ktime_to_ns(ktime_t k)
{
return k;
}
static inline int64_t
ktime_get_raw_ns(void)
{
return ktime_to_ns(ktime_get_raw());
}
static inline struct timespec64
ktime_to_timespec64(ktime_t k)
{
struct timespec64 ts;
ts.tv_sec = k / NSEC_PER_SEC;
ts.tv_nsec = k % NSEC_PER_SEC;
if (ts.tv_nsec < 0) {
ts.tv_sec--;
ts.tv_nsec += NSEC_PER_SEC;
}
return ts;
}
static inline ktime_t
ktime_sub(ktime_t a, ktime_t b)
{
return a - b;
}
static inline ktime_t
ktime_add(ktime_t a, ktime_t b)
{
return a + b;
}
static inline ktime_t
ktime_add_us(ktime_t k, uint64_t us)
{
return k + (us * NSEC_PER_USEC);
}
static inline ktime_t
ktime_add_ns(ktime_t k, int64_t ns)
{
return k + ns;
}
static inline ktime_t
ktime_sub_ns(ktime_t k, int64_t ns)
{
return k - ns;
}
static inline int64_t
ktime_us_delta(ktime_t a, ktime_t b)
{
return ktime_to_us(ktime_sub(a, b));
}
static inline int64_t
ktime_ms_delta(ktime_t a, ktime_t b)
{
return ktime_to_ms(ktime_sub(a, b));
}
static inline bool
ktime_after(ktime_t a, ktime_t b)
{
return a > b;
}
static inline ktime_t
ns_to_ktime(uint64_t ns)
{
return ns;
}
#include <linux/timekeeping.h>
#endif
|
