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27 lines
640 B
27 lines
640 B
package signal
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// Notifier is a utility for notifying changes. The change producer may notify changes multiple time, and the consumer may get notified asynchronously.
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type Notifier struct {
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c chan struct{}
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}
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// NewNotifier creates a new Notifier.
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func NewNotifier() *Notifier {
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return &Notifier{
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c: make(chan struct{}, 1),
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}
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}
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// Signal signals a change, usually by producer. This method never blocks.
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func (n *Notifier) Signal() {
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select {
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case n.c <- struct{}{}:
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default:
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}
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}
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// Wait returns a channel for waiting for changes. The returned channel never gets closed.
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func (n *Notifier) Wait() <-chan struct{} {
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return n.c
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}
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