Class MaybeMergeArray.MergeMaybeObserver<T>
- All Implemented Interfaces:
MaybeObserver<T>
,QueueFuseable<T>
,QueueSubscription<T>
,SimpleQueue<T>
,Serializable
,org.reactivestreams.Subscription
- Enclosing class:
MaybeMergeArray<T>
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Field Summary
FieldsModifier and TypeFieldDescription(package private) boolean
(package private) long
(package private) final org.reactivestreams.Subscriber
<? super T> (package private) final AtomicThrowable
(package private) boolean
(package private) final MaybeMergeArray.SimpleQueueWithConsumerIndex
<Object> (package private) final AtomicLong
private static final long
(package private) final CompositeDisposable
(package private) final int
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Constructor Summary
ConstructorsConstructorDescriptionMergeMaybeObserver
(org.reactivestreams.Subscriber<? super T> actual, int sourceCount, MaybeMergeArray.SimpleQueueWithConsumerIndex<Object> queue) -
Method Summary
Modifier and TypeMethodDescriptionvoid
cancel()
void
clear()
Removes all enqueued items from this queue.(package private) void
drain()
(package private) void
(package private) void
(package private) boolean
boolean
isEmpty()
Returns true if the queue is empty.void
Called once the deferred computation completes normally.void
Notifies theMaybeObserver
that theMaybe
has experienced an error condition.void
Provides theMaybeObserver
with the means of cancelling (disposing) the connection (channel) with theMaybe
in both synchronous (from withinonSubscribe(Disposable)
itself) and asynchronous manner.void
Notifies theMaybeObserver
with one item and that theMaybe
has finished sending push-based notifications.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.Methods inherited from class io.reactivex.rxjava3.internal.subscriptions.BasicIntQueueSubscription
offer, offer
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
Methods inherited from class java.lang.Number
byteValue, shortValue
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Field Details
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serialVersionUID
private static final long serialVersionUID- See Also:
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downstream
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set
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requested
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queue
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errors
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sourceCount
final int sourceCount -
cancelled
volatile boolean cancelled -
outputFused
boolean outputFused -
consumed
long consumed
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Constructor Details
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MergeMaybeObserver
MergeMaybeObserver(org.reactivestreams.Subscriber<? super T> actual, int sourceCount, MaybeMergeArray.SimpleQueueWithConsumerIndex<Object> queue)
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Method Details
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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.- Specified by:
requestFusion
in interfaceQueueFuseable<T>
- 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
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.- Specified by:
poll
in interfaceSimpleQueue<T>
- 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).- Specified by:
isEmpty
in interfaceSimpleQueue<T>
- 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.- Specified by:
clear
in interfaceSimpleQueue<T>
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request
public void request(long n) - Specified by:
request
in interfaceorg.reactivestreams.Subscription
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cancel
public void cancel()- Specified by:
cancel
in interfaceorg.reactivestreams.Subscription
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onSubscribe
Description copied from interface:MaybeObserver
Provides theMaybeObserver
with the means of cancelling (disposing) the connection (channel) with theMaybe
in both synchronous (from withinonSubscribe(Disposable)
itself) and asynchronous manner.- Specified by:
onSubscribe
in interfaceMaybeObserver<T>
- Parameters:
d
- theDisposable
instance whoseDisposable.dispose()
can be called anytime to cancel the connection
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onSuccess
Description copied from interface:MaybeObserver
Notifies theMaybeObserver
with one item and that theMaybe
has finished sending push-based notifications.The
Maybe
will not call this method if it callsMaybeObserver.onError(java.lang.Throwable)
.- Specified by:
onSuccess
in interfaceMaybeObserver<T>
- Parameters:
value
- the item emitted by theMaybe
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onError
Description copied from interface:MaybeObserver
Notifies theMaybeObserver
that theMaybe
has experienced an error condition.If the
Maybe
calls this method, it will not thereafter callMaybeObserver.onSuccess(T)
.- Specified by:
onError
in interfaceMaybeObserver<T>
- Parameters:
e
- the exception encountered by theMaybe
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onComplete
public void onComplete()Description copied from interface:MaybeObserver
Called once the deferred computation completes normally.- Specified by:
onComplete
in interfaceMaybeObserver<T>
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isCancelled
boolean isCancelled() -
drainNormal
void drainNormal() -
drainFused
void drainFused() -
drain
void drain()
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