33 lines
506 B
Go
33 lines
506 B
Go
package auxid
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import (
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"math/rand"
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"sync"
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"time"
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)
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func init() {
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rand.Seed(time.Now().UnixNano())
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}
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var (
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idMtx sync.Mutex
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lastID int64
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)
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func GenID() int64 {
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// 53 bit limit for js
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// See https://stackoverflow.com/questions/1379934/large-numbers-erroneously-rounded-in-javascript
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idMtx.Lock()
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defer idMtx.Unlock()
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for {
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id := (time.Now().UnixNano() / 1000) // - 10000000000000
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if id != lastID {
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lastID = id
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return id
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}
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time.Sleep(1 * time.Microsecond)
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}
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//10467328383814
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}
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