Top Description Fields Constructors Methods
io.reactivex.rxjava3.internal.operators.flowable

pack-priv abstract Class AbstractBackpressureThrottlingSubscriber<T, R>

extends AtomicInteger
implements FlowableSubscriber<T>, Subscription
Class Inheritance
All Implemented Interfaces
org.reactivestreams.Subscription, io.reactivex.rxjava3.core.FlowableSubscriber, org.reactivestreams.Subscriber
Known Direct Subclasses
io.reactivex.rxjava3.internal.operators.flowable.FlowableOnBackpressureLatest.BackpressureLatestSubscriber, io.reactivex.rxjava3.internal.operators.flowable.FlowableOnBackpressureReduce.BackpressureReduceSubscriber, io.reactivex.rxjava3.internal.operators.flowable.FlowableOnBackpressureReduceWith.BackpressureReduceWithSubscriber
Type Parameters
<T>
the upstream value type
<R>
the downstream value type
Imports
io.reactivex.rxjava3.core.FlowableSubscriber, io.reactivex.rxjava3.internal.subscriptions.SubscriptionHelper, io.reactivex.rxjava3.internal.util.BackpressureHelper, org.reactivestreams.Subscriber, .Subscription, java.util.concurrent.atomic.AtomicInteger, .AtomicLong, .AtomicReference
Abstract base class for operators that throttle excessive updates from upstream in case if downstream Subscriber is not ready to receive updates.

Field Summary

Modifier and TypeField and Description
pack-priv volatile boolean
cancelled

pack-priv final AtomicReference<R>
current

pack-priv volatile boolean
done

pack-priv final Subscriber<? super R>
downstream

pack-priv Throwable
error

pack-priv final AtomicLong
requested

private static final long
serialVersionUID

Hides java.util.concurrent.atomic.AtomicInteger.serialVersionUID.

pack-priv Subscription
upstream

Constructor Summary

AccessConstructor and Description
pack-priv
AbstractBackpressureThrottlingSubscriber(Subscriber<? super R> downstream)

Method Summary

Modifier and TypeMethod and Description
public void
cancel()

Implements org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.
pack-priv boolean
checkTerminated(boolean d, boolean empty, Subscriber<?> a, AtomicReference<R> q)

pack-priv void
drain()

public void
onComplete()

Implements org.reactivestreams.Subscriber.onComplete.

Successful terminal state.
public void
onError(Throwable
the throwable signaled
t)

Implements org.reactivestreams.Subscriber.onError.

Failed terminal state.
public abstract void
onNext(T
the element signaled
t)

Redeclares org.reactivestreams.Subscriber.onNext.

Data notification sent by the Publisher in response to requests to Subscription#request(long).
public void
onSubscribe(Subscription
the Subscription that allows requesting data via Subscription#request(long)
s)

Implements org.reactivestreams.Subscriber.onSubscribe.

Invoked after calling Publisher#subscribe(Subscriber).
public void
request(long
the strictly positive number of elements to requests to the upstream Publisher
n)

Implements org.reactivestreams.Subscription.request.

No events will be sent by a Publisher until demand is signaled via this method.
Inherited from java.util.concurrent.atomic.AtomicInteger:
accumulateAndGetaddAndGetcompareAndExchangecompareAndExchangeAcquirecompareAndExchangeReleasecompareAndSetdecrementAndGetdoubleValuefloatValuegetgetAcquiregetAndAccumulategetAndAddgetAndDecrementgetAndIncrementgetAndSetgetAndUpdategetOpaquegetPlainincrementAndGetintValuelazySetlongValuesetsetOpaquesetPlainsetReleasetoStringupdateAndGetweakCompareAndSetweakCompareAndSetAcquireweakCompareAndSetPlainweakCompareAndSetReleaseweakCompareAndSetVolatile

Field Detail

cancelledback to summary
pack-priv volatile boolean cancelled
currentback to summary
pack-priv final AtomicReference<R> current
doneback to summary
pack-priv volatile boolean done
downstreamback to summary
pack-priv final Subscriber<? super R> downstream
errorback to summary
pack-priv Throwable error
requestedback to summary
pack-priv final AtomicLong requested
serialVersionUIDback to summary
private static final long serialVersionUID

Hides java.util.concurrent.atomic.AtomicInteger.serialVersionUID.

upstreamback to summary
pack-priv Subscription upstream

Constructor Detail

AbstractBackpressureThrottlingSubscriberback to summary
pack-priv AbstractBackpressureThrottlingSubscriber(Subscriber<? super R> downstream)

Method Detail

cancelback to summary
public void cancel()

Implements org.reactivestreams.Subscription.cancel.

Doc from org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.

Data may still be sent to meet previously signalled demand after calling cancel.

Annotations
@Override
checkTerminatedback to summary
pack-priv boolean checkTerminated(boolean d, boolean empty, Subscriber<?> a, AtomicReference<R> q)
drainback to summary
pack-priv void drain()
onCompleteback to summary
public void onComplete()

Implements org.reactivestreams.Subscriber.onComplete.

Doc from org.reactivestreams.Subscriber.onComplete.

Successful terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Annotations
@Override
onErrorback to summary
public void onError(Throwable t)

Implements org.reactivestreams.Subscriber.onError.

Doc from org.reactivestreams.Subscriber.onError.

Failed terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Parameters
t:Throwable

the throwable signaled

Annotations
@Override
onNextback to summary
public abstract void onNext(T t)

Redeclares org.reactivestreams.Subscriber.onNext.

Doc from org.reactivestreams.Subscriber.onNext.

Data notification sent by the Publisher in response to requests to Subscription#request(long).

Parameters
t:T

the element signaled

Annotations
@Override
onSubscribeback to summary
public void onSubscribe(Subscription s)

Implements org.reactivestreams.Subscriber.onSubscribe.

Doc from org.reactivestreams.Subscriber.onSubscribe.

Invoked after calling Publisher#subscribe(Subscriber).

No data will start flowing until Subscription#request(long) is invoked.

It is the responsibility of this Subscriber instance to call Subscription#request(long) whenever more data is wanted.

The Publisher will send notifications only in response to Subscription#request(long).

Parameters
s:Subscription

the Subscription that allows requesting data via Subscription#request(long)

Annotations
@Override
requestback to summary
public void request(long n)

Implements org.reactivestreams.Subscription.request.

Doc from org.reactivestreams.Subscription.request.

No events will be sent by a Publisher until demand is signaled via this method.

It can be called however often and whenever needed—but if the outstanding cumulative demand ever becomes Long.MAX_VALUE or more, it may be treated by the Publisher as "effectively unbounded".

Whatever has been requested can be sent by the Publisher so only signal demand for what can be safely handled.

A Publisher can send less than is requested if the stream ends but then must emit either Subscriber#onError(Throwable) or Subscriber#onComplete().

Parameters
n:long

the strictly positive number of elements to requests to the upstream Publisher

Annotations
@Override