Package rx.internal.operators

Class OnSubscribeCombineLatest.LatestCoordinator<T,R>

java.lang.Object

java.lang.Number

java.util.concurrent.atomic.AtomicInteger

rx.internal.operators.OnSubscribeCombineLatest.LatestCoordinator<T,R>

All Implemented Interfaces:

Serializable, Producer, Subscription

Enclosing class:

OnSubscribeCombineLatest<T,R>

static final class OnSubscribeCombineLatest.LatestCoordinator<T,R>
extends AtomicInteger
implements Producer, Subscription

Field Summary

Fields

Modifier and Type	Field	Description
(package private) int	active
(package private) final Subscriber<? super R>	actual
(package private) final int	bufferSize
(package private) boolean	cancelled
(package private) final FuncN<? extends R>	combiner
(package private) int	complete
(package private) final int	count
(package private) final boolean	delayError
(package private) boolean	done
(package private) final AtomicReference<Throwable>	error
(package private) final Object[]	latest
(package private) static final Object	MISSING	Indicates the particular source hasn't emitted any value yet.
(package private) final SpscLinkedArrayQueue<Object>	queue
(package private) final AtomicLong	requested
private static final long	serialVersionUID
(package private) final OnSubscribeCombineLatest.CombinerSubscriber<T,R>[]	subscribers

Constructor Summary

Constructors

Constructor	Description
LatestCoordinator(Subscriber<? super R> actual, FuncN<? extends R> combiner, int count, int bufferSize, boolean delayError)

Method Summary

Modifier and Type	Method	Description
(package private) void	cancel(Queue<?> q)
(package private) boolean	checkTerminated(boolean mainDone, boolean queueEmpty, Subscriber<?> childSubscriber, Queue<?> q, boolean delayError)
(package private) void	combine(Object value, int index)	Combine the given notification value from the indexth source with the existing known latest values.
(package private) void	drain()
boolean	isUnsubscribed()	Indicates whether this Subscription is currently unsubscribed.
(package private) void	onError(Throwable e)
void	request(long n)	Request a certain maximum number of items from this Producer.
void	subscribe(Observable<? extends T>[] sources)
void	unsubscribe()	Stops the receipt of notifications on the Subscriber that was registered when this Subscription was received.

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

actual

final Subscriber<? super R> actual

combiner

final FuncN<? extends R> combiner

count

final int count

subscribers

final OnSubscribeCombineLatest.CombinerSubscriber<T,R>[] subscribers

bufferSize

final int bufferSize

latest

final Object[] latest

queue

final SpscLinkedArrayQueue<Object> queue

delayError

final boolean delayError

cancelled

volatile boolean cancelled

done

volatile boolean done

requested

final AtomicLong requested

error

final AtomicReference<Throwable> error

active

int active

complete

int complete

MISSING

static final Object MISSING

Indicates the particular source hasn't emitted any value yet.

Constructor Details

LatestCoordinator

public LatestCoordinator(Subscriber<? super R> actual,
 FuncN<? extends R> combiner,
 int count,
 int bufferSize,
 boolean delayError)

Method Details

subscribe

public void subscribe(Observable<? extends T>[] sources)

request

public void request(long n)

Description copied from interface: Producer

Request a certain maximum number of items from this Producer. This is a way of requesting backpressure. To disable backpressure, pass Long.MAX_VALUE to this method.

Requests are additive but if a sequence of requests totals more than Long.MAX_VALUE then Long.MAX_VALUE requests will be actioned and the extras may be ignored. Arriving at Long.MAX_VALUE by addition of requests cannot be assumed to disable backpressure. For example, the code below may result in Long.MAX_VALUE requests being actioned only.

 request(100);
 request(Long.MAX_VALUE-1);
 

Specified by:

request in interface Producer

Parameters:

n - the maximum number of items you want this Producer to produce, or Long.MAX_VALUE if you want the Producer to produce items at its own pace

unsubscribe

public void unsubscribe()

Description copied from interface: Subscription

Stops the receipt of notifications on the Subscriber that was registered when this Subscription was received.

This allows unregistering an Subscriber before it has finished receiving all events (i.e. before onCompleted is called).

Specified by:

unsubscribe in interface Subscription

isUnsubscribed

public boolean isUnsubscribed()

Description copied from interface: Subscription

Indicates whether this Subscription is currently unsubscribed.

Specified by:

isUnsubscribed in interface Subscription

Returns:

true if this Subscription is currently unsubscribed, false otherwise

cancel

void cancel(Queue<?> q)

combine

void combine(Object value,
 int index)

Combine the given notification value from the indexth source with the existing known latest values.

Parameters:

value - the notification to combine, null indicates the source terminated normally

index - the index of the source subscriber

drain

void drain()

checkTerminated

boolean checkTerminated(boolean mainDone,
 boolean queueEmpty,
 Subscriber<?> childSubscriber,
 Queue<?> q,
 boolean delayError)

onError

void onError(Throwable e)