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26 lines
640 B
26 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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