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gatus/vendor/golang.org/x/sys/unix/timestruct.go
TwinProduction cf923af230 Fix dependencies
2020-12-25 03:02:44 -05:00

77 lines
2.2 KiB
Go

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
package unix
import "time"
// TimespecToNSec returns the time stored in ts as nanoseconds.
func TimespecToNsec(ts Timespec) int64 { return ts.Nano() }
// NsecToTimespec converts a number of nanoseconds into a Timespec.
func NsecToTimespec(nsec int64) Timespec {
sec := nsec / 1e9
nsec = nsec % 1e9
if nsec < 0 {
nsec += 1e9
sec--
}
return setTimespec(sec, nsec)
}
// TimeToTimespec converts t into a Timespec.
// On some 32-bit systems the range of valid Timespec values are smaller
// than that of time.Time values. So if t is out of the valid range of
// Timespec, it returns a zero Timespec and ERANGE.
func TimeToTimespec(t time.Time) (Timespec, error) {
sec := t.Unix()
nsec := int64(t.Nanosecond())
ts := setTimespec(sec, nsec)
// Currently all targets have either int32 or int64 for Timespec.Sec.
// If there were a new target with floating point type for it, we have
// to consider the rounding error.
if int64(ts.Sec) != sec {
return Timespec{}, ERANGE
}
return ts, nil
}
// TimevalToNsec returns the time stored in tv as nanoseconds.
func TimevalToNsec(tv Timeval) int64 { return tv.Nano() }
// NsecToTimeval converts a number of nanoseconds into a Timeval.
func NsecToTimeval(nsec int64) Timeval {
nsec += 999 // round up to microsecond
usec := nsec % 1e9 / 1e3
sec := nsec / 1e9
if usec < 0 {
usec += 1e6
sec--
}
return setTimeval(sec, usec)
}
// Unix returns the time stored in ts as seconds plus nanoseconds.
func (ts *Timespec) Unix() (sec int64, nsec int64) {
return int64(ts.Sec), int64(ts.Nsec)
}
// Unix returns the time stored in tv as seconds plus nanoseconds.
func (tv *Timeval) Unix() (sec int64, nsec int64) {
return int64(tv.Sec), int64(tv.Usec) * 1000
}
// Nano returns the time stored in ts as nanoseconds.
func (ts *Timespec) Nano() int64 {
return int64(ts.Sec)*1e9 + int64(ts.Nsec)
}
// Nano returns the time stored in tv as nanoseconds.
func (tv *Timeval) Nano() int64 {
return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
}