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comparison vendor/golang.org/x/sys/unix/timestruct.go @ 66:787b5ee0289d draft

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Use vendored modules Signed-off-by: Izuru Yakumo <yakumo.izuru@chaotic.ninja>
author yakumo.izuru
date Sun, 23 Jul 2023 13:18:53 +0000
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65:6d985efa0f7a 66:787b5ee0289d
1 // Copyright 2017 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 //go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
6 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
7
8 package unix
9
10 import "time"
11
12 // TimespecToNSec returns the time stored in ts as nanoseconds.
13 func TimespecToNsec(ts Timespec) int64 { return ts.Nano() }
14
15 // NsecToTimespec converts a number of nanoseconds into a Timespec.
16 func NsecToTimespec(nsec int64) Timespec {
17 sec := nsec / 1e9
18 nsec = nsec % 1e9
19 if nsec < 0 {
20 nsec += 1e9
21 sec--
22 }
23 return setTimespec(sec, nsec)
24 }
25
26 // TimeToTimespec converts t into a Timespec.
27 // On some 32-bit systems the range of valid Timespec values are smaller
28 // than that of time.Time values. So if t is out of the valid range of
29 // Timespec, it returns a zero Timespec and ERANGE.
30 func TimeToTimespec(t time.Time) (Timespec, error) {
31 sec := t.Unix()
32 nsec := int64(t.Nanosecond())
33 ts := setTimespec(sec, nsec)
34
35 // Currently all targets have either int32 or int64 for Timespec.Sec.
36 // If there were a new target with floating point type for it, we have
37 // to consider the rounding error.
38 if int64(ts.Sec) != sec {
39 return Timespec{}, ERANGE
40 }
41 return ts, nil
42 }
43
44 // TimevalToNsec returns the time stored in tv as nanoseconds.
45 func TimevalToNsec(tv Timeval) int64 { return tv.Nano() }
46
47 // NsecToTimeval converts a number of nanoseconds into a Timeval.
48 func NsecToTimeval(nsec int64) Timeval {
49 nsec += 999 // round up to microsecond
50 usec := nsec % 1e9 / 1e3
51 sec := nsec / 1e9
52 if usec < 0 {
53 usec += 1e6
54 sec--
55 }
56 return setTimeval(sec, usec)
57 }
58
59 // Unix returns the time stored in ts as seconds plus nanoseconds.
60 func (ts *Timespec) Unix() (sec int64, nsec int64) {
61 return int64(ts.Sec), int64(ts.Nsec)
62 }
63
64 // Unix returns the time stored in tv as seconds plus nanoseconds.
65 func (tv *Timeval) Unix() (sec int64, nsec int64) {
66 return int64(tv.Sec), int64(tv.Usec) * 1000
67 }
68
69 // Nano returns the time stored in ts as nanoseconds.
70 func (ts *Timespec) Nano() int64 {
71 return int64(ts.Sec)*1e9 + int64(ts.Nsec)
72 }
73
74 // Nano returns the time stored in tv as nanoseconds.
75 func (tv *Timeval) Nano() int64 {
76 return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
77 }