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

Class FlowableGroupBy.State<T,K>

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicInteger

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

io.reactivex.rxjava3.internal.operators.flowable.FlowableGroupBy.State<T,K>

All Implemented Interfaces:

QueueFuseable<T>, QueueSubscription<T>, SimpleQueue<T>, Serializable, org.reactivestreams.Publisher<T>, org.reactivestreams.Subscription

Enclosing class:

FlowableGroupBy<T,K,V>

static final class FlowableGroupBy.State<T,K>
extends BasicIntQueueSubscription<T>
implements org.reactivestreams.Publisher<T>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final int	ABANDONED
(package private) static final int	ABANDONED_HAS_SUBSCRIBER
(package private) final AtomicReference<org.reactivestreams.Subscriber<? super T>>	actual
(package private) final AtomicBoolean	cancelled
(package private) final boolean	delayError
(package private) boolean	done
(package private) Throwable	error
(package private) final AtomicBoolean	evictOnce
(package private) static final int	FRESH
(package private) static final int	HAS_SUBSCRIBER
(package private) final K	key
(package private) final AtomicInteger	once
(package private) boolean	outputFused
(package private) final FlowableGroupBy.GroupBySubscriber<?,K,T>	parent
(package private) int	produced
(package private) final SpscLinkedArrayQueue<T>	queue
(package private) final AtomicLong	requested
private static final long	serialVersionUID

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

ANY, ASYNC, BOUNDARY, NONE, SYNC

Constructor Summary

Constructors

Constructor	Description
State(int bufferSize, FlowableGroupBy.GroupBySubscriber<?,K,T> parent, K key, boolean delayError)

Method Summary

Modifier and Type	Method	Description
void	cancel()
(package private) void	cancelParent()
(package private) boolean	checkTerminated(boolean d, boolean empty, org.reactivestreams.Subscriber<? super T> a, boolean delayError, long emitted, boolean polled)
(package private) void	cleanupQueue(long emitted, boolean polled)
void	clear()	Removes all enqueued items from this queue.
(package private) void	drain()
(package private) void	drainFused()
(package private) void	drainNormal()
boolean	isEmpty()	Returns true if the queue is empty.
void	onComplete()
void	onError(Throwable e)
void	onNext(T t)
T	poll()	Tries to dequeue a value (non-null) or returns null if the queue is empty.
(package private) void	replenishParent(long emitted, boolean polled)
void	request(long n)
int	requestFusion(int mode)	Request a fusion mode from the upstream.
(package private) void	requestParent(long e)
void	subscribe(org.reactivestreams.Subscriber<? super T> subscriber)
(package private) boolean	tryAbandon()
(package private) boolean	tryComplete()
(package private) void	tryReplenish()

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

key

final K key

queue

final SpscLinkedArrayQueue<T> queue

parent

final FlowableGroupBy.GroupBySubscriber<?,K,T> parent

delayError

final boolean delayError

requested

final AtomicLong requested

done

volatile boolean done

error

Throwable error

cancelled

final AtomicBoolean cancelled

actual

final AtomicReference<org.reactivestreams.Subscriber<? super T>> actual

outputFused

boolean outputFused

produced

int produced

once

final AtomicInteger once

FRESH

static final int FRESH

See Also:

• Constant Field Values

HAS_SUBSCRIBER

static final int HAS_SUBSCRIBER

See Also:

• Constant Field Values

ABANDONED

static final int ABANDONED

See Also:

• Constant Field Values

ABANDONED_HAS_SUBSCRIBER

static final int ABANDONED_HAS_SUBSCRIBER

See Also:

• Constant Field Values

evictOnce

final AtomicBoolean evictOnce

Constructor Details

State

State(int bufferSize,
 FlowableGroupBy.GroupBySubscriber<?,K,T> parent,
 K key,
 boolean delayError)

Method Details

request

public void request(long n)

Specified by:

request in interface org.reactivestreams.Subscription

cancel

public void cancel()

Specified by:

cancel in interface org.reactivestreams.Subscription

subscribe

public void subscribe(org.reactivestreams.Subscriber<? super T> subscriber)

Specified by:

subscribe in interface org.reactivestreams.Publisher<T>

onNext

public void onNext(T t)

onError

public void onError(Throwable e)

onComplete

public void onComplete()

tryComplete

boolean tryComplete()

cancelParent

void cancelParent()

tryAbandon

boolean tryAbandon()

drain

void drain()

drainFused

void drainFused()

drainNormal

void drainNormal()

requestParent

void requestParent(long e)

cleanupQueue

void cleanupQueue(long emitted,
 boolean polled)

replenishParent

void replenishParent(long emitted,
 boolean polled)

checkTerminated

boolean checkTerminated(boolean d,
 boolean empty,
 org.reactivestreams.Subscriber<? super T> a,
 boolean delayError,
 long emitted,
 boolean polled)

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 interface QueueFuseable<T>

Parameters:

mode - 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.

tryReplenish

void tryReplenish()

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.

Specified by:

poll in interface SimpleQueue<T>

Returns:

the item or null to indicate an empty 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).

Specified by:

isEmpty in interface SimpleQueue<T>

Returns:

true if the queue is empty

clear

public void clear()

Description copied from interface: SimpleQueue

Removes all enqueued items from this queue.

Specified by:

clear in interface SimpleQueue<T>