Package rx.internal.operators
Class OnSubscribePublishMulticast.PublishProducer<T>
- java.lang.Object
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- java.lang.Number
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- java.util.concurrent.atomic.AtomicLong
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- rx.internal.operators.OnSubscribePublishMulticast.PublishProducer<T>
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- Type Parameters:
T
- the output value type
- All Implemented Interfaces:
java.io.Serializable
,Producer
,Subscription
- Enclosing class:
- OnSubscribePublishMulticast<T>
static final class OnSubscribePublishMulticast.PublishProducer<T> extends java.util.concurrent.atomic.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
Fields Modifier and Type Field Description (package private) Subscriber<? super T>
actual
The actual subscriber to receive the events.(package private) java.util.concurrent.atomic.AtomicBoolean
once
Makes sure unsubscription happens only once.(package private) OnSubscribePublishMulticast<T>
parent
The parent object to request draining or removal.private static long
serialVersionUID
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Constructor Summary
Constructors Constructor Description PublishProducer(Subscriber<? super T> actual, OnSubscribePublishMulticast<T> parent)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
isUnsubscribed()
Indicates whether thisSubscription
is currently unsubscribed.void
request(long n)
Request a certain maximum number of items from this Producer.void
unsubscribe()
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
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Field Detail
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serialVersionUID
private static final long serialVersionUID
- See Also:
- Constant Field Values
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actual
final Subscriber<? super T> actual
The actual subscriber to receive the events.
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parent
final OnSubscribePublishMulticast<T> parent
The parent object to request draining or removal.
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once
final java.util.concurrent.atomic.AtomicBoolean once
Makes sure unsubscription happens only once.
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Constructor Detail
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PublishProducer
public PublishProducer(Subscriber<? super T> actual, OnSubscribePublishMulticast<T> parent)
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Method Detail
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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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