Package rx.subjects
Class ReplaySubject.ReplayProducer<T>
- java.lang.Object
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- java.lang.Number
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- java.util.concurrent.atomic.AtomicInteger
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- rx.subjects.ReplaySubject.ReplayProducer<T>
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- Type Parameters:
T
- the value type
- All Implemented Interfaces:
java.io.Serializable
,Producer
,Subscription
- Enclosing class:
- ReplaySubject<T>
static final class ReplaySubject.ReplayProducer<T> extends java.util.concurrent.atomic.AtomicInteger implements Producer, Subscription
A producer and subscription implementation that tracks the current replay position of a particular subscriber.The this holds the current work-in-progress indicator used by serializing replays.
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Field Summary
Fields Modifier and Type Field Description (package private) Subscriber<? super T>
actual
The wrapped Subscriber instance.(package private) int
index
Unbounded buffer.drain() uses this field to remember the absolute index of values replayed to this Subscriber.(package private) java.lang.Object
node
Stores the current replay node of the buffer to be used by buffer.drain().(package private) java.util.concurrent.atomic.AtomicLong
requested
Holds the current requested amount.private static long
serialVersionUID
(package private) ReplaySubject.ReplayState<T>
state
Holds the back-reference to the replay state object.(package private) int
tailIndex
Unbounded buffer.drain() uses this index within its current node to indicate how many items were replayed from that particular node so far.
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Constructor Summary
Constructors Constructor Description ReplayProducer(Subscriber<? super T> actual, ReplaySubject.ReplayState<T> state)
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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.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
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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 wrapped Subscriber instance.
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requested
final java.util.concurrent.atomic.AtomicLong requested
Holds the current requested amount.
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state
final ReplaySubject.ReplayState<T> state
Holds the back-reference to the replay state object.
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index
int index
Unbounded buffer.drain() uses this field to remember the absolute index of values replayed to this Subscriber.
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tailIndex
int tailIndex
Unbounded buffer.drain() uses this index within its current node to indicate how many items were replayed from that particular node so far.
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node
java.lang.Object node
Stores the current replay node of the buffer to be used by buffer.drain().
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Constructor Detail
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ReplayProducer
public ReplayProducer(Subscriber<? super T> actual, ReplaySubject.ReplayState<T> state)
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Method Detail
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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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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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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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