Package io.reactivex.rxjava3.internal.operators.flowable

Class FlowableCombineLatest.CombineLatestCoordinator<T,R>

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicInteger

io.reactivex.rxjava3.internal.subscriptions.BasicIntQueueSubscription<R>

io.reactivex.rxjava3.internal.operators.flowable.FlowableCombineLatest.CombineLatestCoordinator<T,R>

All Implemented Interfaces:

QueueFuseable<R>, QueueSubscription<R>, SimpleQueue<R>, Serializable, org.reactivestreams.Subscription

Enclosing class:

FlowableCombineLatest<T,R>

static final class FlowableCombineLatest.CombineLatestCoordinator<T,R>
extends BasicIntQueueSubscription<R>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) boolean	cancelled
(package private) final Function<? super Object[],? extends R>	combiner
(package private) int	completedSources
(package private) final boolean	delayErrors
(package private) boolean	done
(package private) final org.reactivestreams.Subscriber<? super R>	downstream
(package private) final AtomicThrowable	error
(package private) final Object[]	latest
(package private) int	nonEmptySources
(package private) boolean	outputFused
(package private) final SpscLinkedArrayQueue<Object>	queue
(package private) final AtomicLong	requested
private static final long	serialVersionUID
(package private) final FlowableCombineLatest.CombineLatestInnerSubscriber<T>[]	subscribers

Fields inherited from interface io.reactivex.rxjava3.operators.QueueFuseable

ANY, ASYNC, BOUNDARY, NONE, SYNC

Constructor Summary

Constructors

Constructor	Description
CombineLatestCoordinator(org.reactivestreams.Subscriber<? super R> actual, Function<? super Object[],? extends R> combiner, int n, int bufferSize, boolean delayErrors)

Method Summary

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, 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)

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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

downstream

final org.reactivestreams.Subscriber<? super R> downstream

combiner

final Function<? super Object[],? extends R> combiner

subscribers

final FlowableCombineLatest.CombineLatestInnerSubscriber<T>[] subscribers

queue

final SpscLinkedArrayQueue<Object> queue

latest

final Object[] latest

delayErrors

final boolean delayErrors

outputFused

boolean outputFused

nonEmptySources

int nonEmptySources

completedSources

int completedSources

cancelled

volatile boolean cancelled

requested

final AtomicLong requested

done

volatile boolean done

error

final AtomicThrowable error

Constructor Details

CombineLatestCoordinator

CombineLatestCoordinator(org.reactivestreams.Subscriber<? super R> actual,
 Function<? super Object[],? extends R> combiner,
 int n,
 int bufferSize,
 boolean delayErrors)

Method Details

request

public void request(long n)

cancel

public void cancel()

subscribe

void subscribe(org.reactivestreams.Publisher<? extends T>[] sources,
 int n)

innerValue

void innerValue(int index,
 T value)

innerComplete

void innerComplete(int index)

innerError

void innerError(int index,
 Throwable e)

drainOutput

void drainOutput()

drainAsync

void drainAsync()

drain

void drain()

checkTerminated

boolean checkTerminated(boolean d,
 boolean empty,
 org.reactivestreams.Subscriber<?> a,
 SpscLinkedArrayQueue<?> q)

cancelAll

void cancelAll()

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 are QueueFuseable.SYNC, QueueFuseable.ASYNC, QueueFuseable.ANY combined with QueueFuseable.BOUNDARY (e.g., requestFusion(SYNC | BOUNDARY)).

Returns:

the established fusion mode: QueueFuseable.NONE, QueueFuseable.SYNC, QueueFuseable.ASYNC.

poll

@Nullable
public R poll()
       throws 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:

Throwable - if some pre-processing of the dequeued item (usually through fused functions) throws.

clear

public void clear()

Description copied from interface: SimpleQueue

Removes all enqueued items from this queue.

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