mirror of https://github.com/go-gitea/gitea.git
49 lines
769 B
Go
49 lines
769 B
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package util
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import (
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"sync"
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"time"
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)
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// StopTimer is a utility function to safely stop a time.Timer and clean its channel
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func StopTimer(t *time.Timer) bool {
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stopped := t.Stop()
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if !stopped {
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select {
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case <-t.C:
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default:
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}
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}
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return stopped
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}
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func Debounce(d time.Duration) func(f func()) {
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type debouncer struct {
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mu sync.Mutex
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t *time.Timer
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}
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db := &debouncer{}
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return func(f func()) {
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db.mu.Lock()
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defer db.mu.Unlock()
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if db.t != nil {
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db.t.Stop()
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}
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var trigger *time.Timer
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trigger = time.AfterFunc(d, func() {
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db.mu.Lock()
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defer db.mu.Unlock()
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if trigger == db.t {
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f()
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db.t = nil
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}
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})
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db.t = trigger
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}
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}
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