33 lines
836 B
Go
33 lines
836 B
Go
package utils
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import (
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"sync"
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"sync/atomic"
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"time"
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)
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var (
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timestampTimer sync.Once
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// Timestamp please start the timer function before you use this value
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// please load the value with atomic `atomic.LoadUint32(&utils.Timestamp)`
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Timestamp uint32
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)
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// StartTimeStampUpdater starts a concurrent function which stores the timestamp to an atomic value per second,
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// which is much better for performance than determining it at runtime each time
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func StartTimeStampUpdater() {
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timestampTimer.Do(func() {
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// set initial value
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atomic.StoreUint32(&Timestamp, uint32(time.Now().Unix()))
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go func(sleep time.Duration) {
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ticker := time.NewTicker(sleep)
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defer ticker.Stop()
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for t := range ticker.C {
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// update timestamp
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atomic.StoreUint32(&Timestamp, uint32(t.Unix()))
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}
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}(1 * time.Second) // duration
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})
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}
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