41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
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// Copyright 2016 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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// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
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package syscall
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// TimespecToNsec converts a Timespec value into a number of
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// nanoseconds since the Unix epoch.
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func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
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// NsecToTimespec takes a number of nanoseconds since the Unix epoch
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// and returns the corresponding Timespec value.
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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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// TimevalToNsec converts a Timeval value into a number of nanoseconds
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// since the Unix epoch.
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func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
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// NsecToTimeval takes a number of nanoseconds since the Unix epoch
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// and returns the corresponding Timeval value.
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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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