Class FlowableFromIterable.BaseRangeSubscription<T>
- java.lang.Object
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- java.lang.Number
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- java.util.concurrent.atomic.AtomicLong
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- io.reactivex.rxjava3.internal.subscriptions.BasicQueueSubscription<T>
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- io.reactivex.rxjava3.internal.operators.flowable.FlowableFromIterable.BaseRangeSubscription<T>
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- All Implemented Interfaces:
QueueFuseable<T>
,QueueSubscription<T>
,SimpleQueue<T>
,java.io.Serializable
,org.reactivestreams.Subscription
- Direct Known Subclasses:
FlowableFromIterable.IteratorConditionalSubscription
,FlowableFromIterable.IteratorSubscription
- Enclosing class:
- FlowableFromIterable<T>
abstract static class FlowableFromIterable.BaseRangeSubscription<T> extends BasicQueueSubscription<T>
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Field Summary
Fields Modifier and Type Field Description (package private) boolean
cancelled
(package private) java.util.Iterator<? extends T>
iterator
(package private) boolean
once
private static long
serialVersionUID
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Constructor Summary
Constructors Constructor Description BaseRangeSubscription(java.util.Iterator<? extends T> it)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description void
cancel()
void
clear()
Removes all enqueued items from this queue.(package private) abstract void
fastPath()
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.void
request(long n)
int
requestFusion(int mode)
Request a fusion mode from the upstream.(package private) abstract void
slowPath(long r)
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Methods inherited from class io.reactivex.rxjava3.internal.subscriptions.BasicQueueSubscription
offer, offer
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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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iterator
java.util.Iterator<? extends T> iterator
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cancelled
volatile boolean cancelled
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once
boolean once
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Constructor Detail
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BaseRangeSubscription
BaseRangeSubscription(java.util.Iterator<? extends T> it)
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Method Detail
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requestFusion
public final 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 final 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 final 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 final void clear()
Description copied from interface:SimpleQueue
Removes all enqueued items from this queue.
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request
public final void request(long n)
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cancel
public final void cancel()
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fastPath
abstract void fastPath()
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slowPath
abstract void slowPath(long r)
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