com.github.davidmoten.rx.util

Interface Drainer<T>

All Superinterfaces:

rx.Observer<T>, rx.Producer

All Known Implementing Classes:

DrainerSyncBiased

public interface Drainer<T>
extends rx.Observer<T>, rx.Producer

Method Summary

Methods

Modifier and Type	Method and Description
long	surplus() Returns the current best estimate of

Methods inherited from interface rx.Observer

onCompleted, onError, onNext

Methods inherited from interface rx.Producer

request

Method Detail

surplus

long surplus()

Returns the current best estimate of

 currentExpected + numQueuedEmissions + numEmitted - totalRequested -
 

This value can then be subtracted from a request from downstream to estimate the number required from upstream.

Returns:

the current count of surplus emissions