Gibheer
fa05045d31
This is the import from the separate monfront repository. The history could not be imported, but this should suffice.
78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
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// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
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package unix
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import "time"
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// TimespecToNSec returns the time stored in ts as nanoseconds.
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func TimespecToNsec(ts Timespec) int64 { return ts.Nano() }
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// NsecToTimespec converts a number of nanoseconds into a Timespec.
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func NsecToTimespec(nsec int64) Timespec {
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sec := nsec / 1e9
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nsec = nsec % 1e9
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if nsec < 0 {
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nsec += 1e9
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sec--
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}
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return setTimespec(sec, nsec)
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}
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// TimeToTimespec converts t into a Timespec.
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// On some 32-bit systems the range of valid Timespec values are smaller
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// than that of time.Time values. So if t is out of the valid range of
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// Timespec, it returns a zero Timespec and ERANGE.
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func TimeToTimespec(t time.Time) (Timespec, error) {
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sec := t.Unix()
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nsec := int64(t.Nanosecond())
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ts := setTimespec(sec, nsec)
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// Currently all targets have either int32 or int64 for Timespec.Sec.
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// If there were a new target with floating point type for it, we have
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// to consider the rounding error.
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if int64(ts.Sec) != sec {
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return Timespec{}, ERANGE
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}
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return ts, nil
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}
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// TimevalToNsec returns the time stored in tv as nanoseconds.
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func TimevalToNsec(tv Timeval) int64 { return tv.Nano() }
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// NsecToTimeval converts a number of nanoseconds into a Timeval.
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func NsecToTimeval(nsec int64) Timeval {
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nsec += 999 // round up to microsecond
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usec := nsec % 1e9 / 1e3
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sec := nsec / 1e9
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if usec < 0 {
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usec += 1e6
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sec--
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}
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return setTimeval(sec, usec)
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}
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// Unix returns the time stored in ts as seconds plus nanoseconds.
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func (ts *Timespec) Unix() (sec int64, nsec int64) {
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return int64(ts.Sec), int64(ts.Nsec)
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}
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// Unix returns the time stored in tv as seconds plus nanoseconds.
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func (tv *Timeval) Unix() (sec int64, nsec int64) {
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return int64(tv.Sec), int64(tv.Usec) * 1000
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}
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// Nano returns the time stored in ts as nanoseconds.
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func (ts *Timespec) Nano() int64 {
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return int64(ts.Sec)*1e9 + int64(ts.Nsec)
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}
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// Nano returns the time stored in tv as nanoseconds.
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func (tv *Timeval) Nano() int64 {
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return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
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}
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