Interface Waitable

pkg/waiter/waiter.go:100–117

Waitable contains the methods that need to be implemented by waitable objects.

// Waitable contains the methods that need to be implemented by waitable
// objects.
type Waitable interface {
	// Readiness returns what the object is currently ready for. If it's
	// not ready for a desired purpose, the caller may use EventRegister and
	// EventUnregister to get notifications once the object becomes ready.
	//
	// Implementations should allow for events like EventHUp and EventErr
	// to be returned regardless of whether they are in the input EventMask.
	Readiness(mask EventMask) EventMask

	// EventRegister registers the given waiter entry to receive
	// notifications when an event occurs that makes the object ready for
	// at least one of the events in mask.
	EventRegister(e *Entry) error

	// EventUnregister unregisters a waiter entry previously registered with
	// EventRegister().
	EventUnregister(e *Entry)
}

// EventListener provides a notify callback.
type EventListener interface {