Package rx.internal.producers
Class SingleProducer<T>
java.lang.Object
java.util.concurrent.atomic.AtomicBoolean
rx.internal.producers.SingleProducer<T>
- Type Parameters:
T
- the value type
- All Implemented Interfaces:
Serializable
,Producer
A producer which emits a single value and completes the child on the first positive request.
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescription(package private) final Subscriber
<? super T> The child subscriber.private static final long
(package private) final T
The value to be emitted. -
Constructor Summary
ConstructorsConstructorDescriptionSingleProducer
(Subscriber<? super T> child, T value) Constructs the producer with the given target child and value to be emitted. -
Method Summary
Modifier and TypeMethodDescriptionvoid
request
(long n) Request a certain maximum number of items from this Producer.Methods inherited from class java.util.concurrent.atomic.AtomicBoolean
compareAndExchange, compareAndExchangeAcquire, compareAndExchangeRelease, compareAndSet, get, getAcquire, getAndSet, getOpaque, getPlain, lazySet, set, setOpaque, setPlain, setRelease, toString, weakCompareAndSet, weakCompareAndSetAcquire, weakCompareAndSetPlain, weakCompareAndSetRelease, weakCompareAndSetVolatile
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Field Details
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serialVersionUID
private static final long serialVersionUID- See Also:
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child
The child subscriber. -
value
The value to be emitted.
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Constructor Details
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SingleProducer
Constructs the producer with the given target child and value to be emitted.- Parameters:
child
- the child subscriber, non-nullvalue
- the value to be emitted, may be null
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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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