Class FlowableCombineLatest.CombineLatestCoordinator<T,R>
- 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.subscriptions.BasicIntQueueSubscription<R>
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- io.reactivex.rxjava3.internal.operators.flowable.FlowableCombineLatest.CombineLatestCoordinator<T,R>
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- All Implemented Interfaces:
QueueFuseable<R>
,QueueSubscription<R>
,SimpleQueue<R>
,java.io.Serializable
,org.reactivestreams.Subscription
- Enclosing class:
- FlowableCombineLatest<T,R>
static final class FlowableCombineLatest.CombineLatestCoordinator<T,R> extends BasicIntQueueSubscription<R>
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Field Summary
Fields Modifier and Type Field Description (package private) boolean
cancelled
(package private) Function<? super java.lang.Object[],? extends R>
combiner
(package private) int
completedSources
(package private) boolean
delayErrors
(package private) boolean
done
(package private) org.reactivestreams.Subscriber<? super R>
downstream
(package private) AtomicThrowable
error
(package private) java.lang.Object[]
latest
(package private) int
nonEmptySources
(package private) boolean
outputFused
(package private) SpscLinkedArrayQueue<java.lang.Object>
queue
(package private) java.util.concurrent.atomic.AtomicLong
requested
private static long
serialVersionUID
(package private) FlowableCombineLatest.CombineLatestInnerSubscriber<T>[]
subscribers
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Constructor Summary
Constructors Constructor Description CombineLatestCoordinator(org.reactivestreams.Subscriber<? super R> actual, Function<? super java.lang.Object[],? extends R> combiner, int n, int bufferSize, boolean delayErrors)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
cancel()
(package private) void
cancelAll()
(package private) boolean
checkTerminated(boolean d, boolean empty, org.reactivestreams.Subscriber<?> a, SpscLinkedArrayQueue<?> q)
void
clear()
Removes all enqueued items from this queue.(package private) void
drain()
(package private) void
drainAsync()
(package private) void
drainOutput()
(package private) void
innerComplete(int index)
(package private) void
innerError(int index, java.lang.Throwable e)
(package private) void
innerValue(int index, T value)
boolean
isEmpty()
Returns true if the queue is empty.R
poll()
Tries to dequeue a value (non-null) or returns null if the queue is empty.void
request(long n)
int
requestFusion(int requestedMode)
Request a fusion mode from the upstream.(package private) void
subscribe(org.reactivestreams.Publisher<? extends T>[] sources, int n)
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Methods inherited from class io.reactivex.rxjava3.internal.subscriptions.BasicIntQueueSubscription
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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downstream
final org.reactivestreams.Subscriber<? super R> downstream
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subscribers
final FlowableCombineLatest.CombineLatestInnerSubscriber<T>[] subscribers
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queue
final SpscLinkedArrayQueue<java.lang.Object> queue
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latest
final java.lang.Object[] latest
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delayErrors
final boolean delayErrors
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outputFused
boolean outputFused
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nonEmptySources
int nonEmptySources
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completedSources
int completedSources
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cancelled
volatile boolean cancelled
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requested
final java.util.concurrent.atomic.AtomicLong requested
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done
volatile boolean done
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error
final AtomicThrowable error
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Method Detail
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request
public void request(long n)
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cancel
public void cancel()
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subscribe
void subscribe(org.reactivestreams.Publisher<? extends T>[] sources, int n)
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innerValue
void innerValue(int index, T value)
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innerComplete
void innerComplete(int index)
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innerError
void innerError(int index, java.lang.Throwable e)
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drainOutput
void drainOutput()
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drainAsync
void drainAsync()
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drain
void drain()
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checkTerminated
boolean checkTerminated(boolean d, boolean empty, org.reactivestreams.Subscriber<?> a, SpscLinkedArrayQueue<?> q)
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cancelAll
void cancelAll()
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requestFusion
public int requestFusion(int requestedMode)
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:
requestedMode
- 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 R poll() throws java.lang.Throwable
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
- Throws:
java.lang.Throwable
- if some pre-processing of the dequeued item (usually through fused functions) throws.
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clear
public void clear()
Description copied from interface:SimpleQueue
Removes all enqueued items from this 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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