Package rx.internal.operators
Class OnSubscribePublishMulticast.PublishProducer<T>
java.lang.Object
java.lang.Number
java.util.concurrent.atomic.AtomicLong
rx.internal.operators.OnSubscribePublishMulticast.PublishProducer<T>
- Type Parameters:
T
- the output value type
- All Implemented Interfaces:
Serializable
,Producer
,Subscription
- Enclosing class:
OnSubscribePublishMulticast<T>
static final class OnSubscribePublishMulticast.PublishProducer<T>
extends AtomicLong
implements Producer, Subscription
A Producer and Subscription that wraps a child Subscriber and manages
its backpressure requests along with its unsubscription from the parent
class.
The class extends AtomicLong that holds onto the child's requested amount.
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Field Summary
FieldsModifier and TypeFieldDescription(package private) final Subscriber
<? super T> The actual subscriber to receive the events.(package private) final AtomicBoolean
Makes sure unsubscription happens only once.(package private) final OnSubscribePublishMulticast
<T> The parent object to request draining or removal.private static final long
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Constructor Summary
ConstructorsConstructorDescriptionPublishProducer
(Subscriber<? super T> actual, OnSubscribePublishMulticast<T> parent) -
Method Summary
Modifier and TypeMethodDescriptionboolean
Indicates whether thisSubscription
is currently unsubscribed.void
request
(long n) Request a certain maximum number of items from this Producer.void
Stops the receipt of notifications on theSubscriber
that was registered when this Subscription was received.Methods inherited from class java.util.concurrent.atomic.AtomicLong
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 java.lang.Number
byteValue, shortValue
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Field Details
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serialVersionUID
private static final long serialVersionUID- See Also:
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actual
The actual subscriber to receive the events. -
parent
The parent object to request draining or removal. -
once
Makes sure unsubscription happens only once.
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Constructor Details
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PublishProducer
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Method Details
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request
public void request(long n) Description copied from interface:Producer
Request a certain maximum number of items from this Producer. This is a way of requesting backpressure. To disable backpressure, passLong.MAX_VALUE
to this method.Requests are additive but if a sequence of requests totals more than
Long.MAX_VALUE
thenLong.MAX_VALUE
requests will be actioned and the extras may be ignored. Arriving atLong.MAX_VALUE
by addition of requests cannot be assumed to disable backpressure. For example, the code below may result inLong.MAX_VALUE
requests being actioned only.request(100); request(Long.MAX_VALUE-1);
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isUnsubscribed
public boolean isUnsubscribed()Description copied from interface:Subscription
Indicates whether thisSubscription
is currently unsubscribed.- Specified by:
isUnsubscribed
in interfaceSubscription
- Returns:
true
if thisSubscription
is currently unsubscribed,false
otherwise
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unsubscribe
public void unsubscribe()Description copied from interface:Subscription
Stops the receipt of notifications on theSubscriber
that was registered when this Subscription was received.This allows unregistering an
Subscriber
before it has finished receiving all events (i.e. before onCompleted is called).- Specified by:
unsubscribe
in interfaceSubscription
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