2019-01-02 01:55:51 +01:00
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/* SPDX-License-Identifier: MIT
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2018-05-03 15:04:00 +02:00
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*
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2021-01-28 17:52:15 +01:00
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* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
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2018-05-03 15:04:00 +02:00
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*/
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2018-02-12 22:29:11 +01:00
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package tai64n
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2017-06-23 13:41:59 +02:00
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import (
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2017-06-24 15:34:17 +02:00
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"bytes"
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2017-06-23 13:41:59 +02:00
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"encoding/binary"
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"time"
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)
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2018-02-11 19:25:33 +01:00
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const TimestampSize = 12
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2019-02-03 02:08:16 +01:00
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const base = uint64(0x400000000000000a)
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const whitenerMask = uint32(0x1000000 - 1)
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2017-06-23 13:41:59 +02:00
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2018-02-11 19:25:33 +01:00
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type Timestamp [TimestampSize]byte
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2017-06-23 13:41:59 +02:00
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2020-05-06 00:37:54 +02:00
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func stamp(t time.Time) Timestamp {
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2018-02-11 19:25:33 +01:00
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var tai64n Timestamp
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2020-05-06 00:37:54 +02:00
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secs := base + uint64(t.Unix())
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nano := uint32(t.Nanosecond()) &^ whitenerMask
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2017-06-23 13:41:59 +02:00
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binary.BigEndian.PutUint64(tai64n[:], secs)
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binary.BigEndian.PutUint32(tai64n[8:], nano)
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return tai64n
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}
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2017-06-24 15:34:17 +02:00
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2020-05-06 00:37:54 +02:00
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func Now() Timestamp {
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return stamp(time.Now())
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}
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2018-02-11 19:25:33 +01:00
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func (t1 Timestamp) After(t2 Timestamp) bool {
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2017-06-24 15:34:17 +02:00
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return bytes.Compare(t1[:], t2[:]) > 0
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}
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