github.com/xraypb/Xray-core@v1.8.1/common/signal/notifier.go (about)

     1  package signal
     2  
     3  // Notifier is a utility for notifying changes. The change producer may notify changes multiple time, and the consumer may get notified asynchronously.
     4  type Notifier struct {
     5  	c chan struct{}
     6  }
     7  
     8  // NewNotifier creates a new Notifier.
     9  func NewNotifier() *Notifier {
    10  	return &Notifier{
    11  		c: make(chan struct{}, 1),
    12  	}
    13  }
    14  
    15  // Signal signals a change, usually by producer. This method never blocks.
    16  func (n *Notifier) Signal() {
    17  	select {
    18  	case n.c <- struct{}{}:
    19  	default:
    20  	}
    21  }
    22  
    23  // Wait returns a channel for waiting for changes. The returned channel never gets closed.
    24  func (n *Notifier) Wait() <-chan struct{} {
    25  	return n.c
    26  }