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31 lines
658 B
Go
31 lines
658 B
Go
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package timeutil
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import (
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"sync/atomic"
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"time"
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)
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// GetLocalTimezoneOffsetNsecs returns local timezone offset in nanoseconds.
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func GetLocalTimezoneOffsetNsecs() int64 {
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return localTimezoneOffsetNsecs.Load()
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}
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var localTimezoneOffsetNsecs atomic.Int64
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func updateLocalTimezoneOffsetNsecs() {
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_, offset := time.Now().Zone()
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nsecs := int64(offset) * 1e9
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localTimezoneOffsetNsecs.Store(nsecs)
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}
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func init() {
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updateLocalTimezoneOffsetNsecs()
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// Update local timezone offset in a loop, since it may change over the year due to DST.
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go func() {
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t := time.NewTicker(5 * time.Second)
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for range t.C {
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updateLocalTimezoneOffsetNsecs()
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}
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}()
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}
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