Class AbstractBackpressureThrottlingSubscriber<T,R>

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicInteger

io.reactivex.rxjava3.internal.operators.flowable.AbstractBackpressureThrottlingSubscriber<T,R>

Type Parameters:

T - the upstream value type

R - the downstream value type

All Implemented Interfaces:

FlowableSubscriber<T>, Serializable, org.reactivestreams.Subscriber<T>, org.reactivestreams.Subscription

Direct Known Subclasses:

FlowableOnBackpressureLatest.BackpressureLatestSubscriber, FlowableOnBackpressureReduce.BackpressureReduceSubscriber, FlowableOnBackpressureReduceWith.BackpressureReduceWithSubscriber

abstract class AbstractBackpressureThrottlingSubscriber<T,R>
extends AtomicInteger
implements FlowableSubscriber<T>, org.reactivestreams.Subscription

Abstract base class for operators that throttle excessive updates from upstream in case if downstream Subscriber is not ready to receive updates.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) boolean	cancelled
(package private) final AtomicReference<R>	current
(package private) boolean	done
(package private) final org.reactivestreams.Subscriber<? super R>	downstream
(package private) Throwable	error
(package private) final AtomicLong	requested
private static final long	serialVersionUID
(package private) org.reactivestreams.Subscription	upstream

Constructor Summary

Constructors

Constructor	Description
AbstractBackpressureThrottlingSubscriber(org.reactivestreams.Subscriber<? super R> downstream)

Method Summary

Modifier and Type	Method	Description
void	cancel()
(package private) boolean	checkTerminated(boolean d, boolean empty, org.reactivestreams.Subscriber<?> a, AtomicReference<R> q)
(package private) void	drain()
void	onComplete()
void	onError(Throwable t)
abstract void	onNext(T t)
void	onSubscribe(org.reactivestreams.Subscription s)	Implementors of this method should make sure everything that needs to be visible in Subscriber.onNext(Object) is established before calling Subscription.request(long).
void	request(long n)

Methods inherited from class AtomicInteger

accumulateAndGet, addAndGet, compareAndExchange, compareAndExchangeAcquire, compareAndExchangeRelease, compareAndSet, decrementAndGet, doubleValue, floatValue, get, getAcquire, getAndAccumulate, getAndAdd, getAndDecrement, getAndIncrement, getAndSet, getAndUpdate, getOpaque, getPlain, incrementAndGet, intValue, lazySet, longValue, set, setOpaque, setPlain, setRelease, toString, updateAndGet, weakCompareAndSet, weakCompareAndSetAcquire, weakCompareAndSetPlain, weakCompareAndSetRelease, weakCompareAndSetVolatile

Methods inherited from class Number

byteValue, shortValue

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

downstream

final org.reactivestreams.Subscriber<? super R> downstream

upstream

org.reactivestreams.Subscription upstream

done

volatile boolean done

error

Throwable error

cancelled

volatile boolean cancelled

requested

final AtomicLong requested

current

final AtomicReference<R> current

Constructor Details

AbstractBackpressureThrottlingSubscriber

AbstractBackpressureThrottlingSubscriber(org.reactivestreams.Subscriber<? super R> downstream)

Method Details

onSubscribe

public void onSubscribe(org.reactivestreams.Subscription s)

Description copied from interface: FlowableSubscriber

Implementors of this method should make sure everything that needs to be visible in Subscriber.onNext(Object) is established before calling Subscription.request(long). In practice this means no initialization should happen after the request() call and additional behavior is thread safe in respect to onNext.

Specified by:

onSubscribe in interface FlowableSubscriber<T>

Specified by:

onSubscribe in interface org.reactivestreams.Subscriber<T>

onNext

public abstract void onNext(T t)

Specified by:

onNext in interface org.reactivestreams.Subscriber<T>

onError

public void onError(Throwable t)

Specified by:

onError in interface org.reactivestreams.Subscriber<T>

onComplete

public void onComplete()

Specified by:

onComplete in interface org.reactivestreams.Subscriber<T>

request

public void request(long n)

Specified by:

request in interface org.reactivestreams.Subscription

cancel

public void cancel()

Specified by:

cancel in interface org.reactivestreams.Subscription

drain

void drain()

checkTerminated

boolean checkTerminated(boolean d,
 boolean empty,
 org.reactivestreams.Subscriber<?> a,
 AtomicReference<R> q)