Package io.reactivex.rxjava3.subjects
Class UnicastSubject.UnicastQueueDisposable
- java.lang.Object
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- java.lang.Number
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- java.util.concurrent.atomic.AtomicInteger
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- io.reactivex.rxjava3.internal.observers.BasicIntQueueDisposable<T>
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- io.reactivex.rxjava3.subjects.UnicastSubject.UnicastQueueDisposable
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- All Implemented Interfaces:
Disposable
,QueueDisposable<T>
,QueueFuseable<T>
,SimpleQueue<T>
,java.io.Serializable
- Enclosing class:
- UnicastSubject<T>
final class UnicastSubject.UnicastQueueDisposable extends BasicIntQueueDisposable<T>
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Field Summary
Fields Modifier and Type Field Description private static long
serialVersionUID
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Constructor Summary
Constructors Constructor Description UnicastQueueDisposable()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
Removes all enqueued items from this queue.void
dispose()
Dispose the resource, the operation should be idempotent.boolean
isDisposed()
Returns true if this resource has been disposed.boolean
isEmpty()
Returns true if the queue is empty.T
poll()
Tries to dequeue a value (non-null) or returns null if the queue is empty.int
requestFusion(int mode)
Request a fusion mode from the upstream.-
Methods inherited from class io.reactivex.rxjava3.internal.observers.BasicIntQueueDisposable
offer, offer
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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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Method Detail
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requestFusion
public int requestFusion(int mode)
Description copied from interface:QueueFuseable
Request a fusion mode from the upstream.This should be called before
onSubscribe
returns.Calling this method multiple times or after
onSubscribe
finished is not allowed and may result in undefined behavior.- Parameters:
mode
- the requested fusion mode, allowed values areQueueFuseable.SYNC
,QueueFuseable.ASYNC
,QueueFuseable.ANY
combined withQueueFuseable.BOUNDARY
(e.g.,requestFusion(SYNC | BOUNDARY)
).- Returns:
- the established fusion mode:
QueueFuseable.NONE
,QueueFuseable.SYNC
,QueueFuseable.ASYNC
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poll
@Nullable public T poll()
Description copied from interface:SimpleQueue
Tries to dequeue a value (non-null) or returns null if the queue is empty.If the producer uses
SimpleQueue.offer(Object, Object)
and when polling in pairs, if the first poll() returns a non-null item, the second poll() is guaranteed to return a non-null item as well.- Returns:
- the item or null to indicate an empty queue
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isEmpty
public boolean isEmpty()
Description copied from interface:SimpleQueue
Returns true if the queue is empty.Note however that due to potential fused functions in
SimpleQueue.poll()
it is possible this method returns false but then poll() returns null because the fused function swallowed the available item(s).- Returns:
- true if the queue is empty
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clear
public void clear()
Description copied from interface:SimpleQueue
Removes all enqueued items from this queue.
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dispose
public void dispose()
Description copied from interface:Disposable
Dispose the resource, the operation should be idempotent.
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isDisposed
public boolean isDisposed()
Description copied from interface:Disposable
Returns true if this resource has been disposed.- Returns:
- true if this resource has been disposed
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