Class ObservableScalarXMap.ScalarDisposable<T>

java.lang.Object
java.lang.Number
java.util.concurrent.atomic.AtomicInteger
io.reactivex.rxjava3.internal.operators.observable.ObservableScalarXMap.ScalarDisposable<T>
Type Parameters:
T - the value type
All Implemented Interfaces:
Disposable, QueueDisposable<T>, QueueFuseable<T>, SimpleQueue<T>, Serializable, Runnable
Enclosing class:
ObservableScalarXMap

public static final class ObservableScalarXMap.ScalarDisposable<T> extends AtomicInteger implements QueueDisposable<T>, Runnable
Represents a Disposable that signals one onNext followed by an onComplete.
See Also:
  • Field Details

  • Constructor Details

    • ScalarDisposable

      public ScalarDisposable(Observer<? super T> observer, T value)
  • Method Details

    • offer

      public boolean offer(T value)
      Description copied from interface: SimpleQueue
      Atomically enqueue a single value.
      Specified by:
      offer in interface SimpleQueue<T>
      Parameters:
      value - the value to enqueue, not null
      Returns:
      true if successful, false if the value was not enqueued likely due to reaching the queue capacity)
    • offer

      public boolean offer(T v1, T v2)
      Description copied from interface: SimpleQueue
      Atomically enqueue two values.
      Specified by:
      offer in interface SimpleQueue<T>
      Parameters:
      v1 - the first value to enqueue, not null
      v2 - the second value to enqueue, not null
      Returns:
      true if successful, false if the value was not enqueued likely due to reaching the queue capacity)
    • 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>
    • dispose

      public void dispose()
      Description copied from interface: Disposable
      Dispose the resource, the operation should be idempotent.
      Specified by:
      dispose in interface Disposable
    • isDisposed

      public boolean isDisposed()
      Description copied from interface: Disposable
      Returns true if this resource has been disposed.
      Specified by:
      isDisposed in interface Disposable
      Returns:
      true if this resource has been disposed
    • 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.
    • run

      public void run()
      Specified by:
      run in interface Runnable