Class FlowableFromStream.AbstractStreamSubscription<T>

java.lang.Object
java.lang.Number
java.util.concurrent.atomic.AtomicLong
io.reactivex.rxjava3.internal.jdk8.FlowableFromStream.AbstractStreamSubscription<T>
All Implemented Interfaces:
QueueFuseable<T>, QueueSubscription<T>, SimpleQueue<T>, Serializable, org.reactivestreams.Subscription
Direct Known Subclasses:
FlowableFromStream.StreamConditionalSubscription, FlowableFromStream.StreamSubscription
Enclosing class:
FlowableFromStream<T>

abstract static class FlowableFromStream.AbstractStreamSubscription<T> extends AtomicLong implements QueueSubscription<T>
  • Field Details

    • serialVersionUID

      private static final long serialVersionUID
      See Also:
    • iterator

      Iterator<T> iterator
    • closeable

      AutoCloseable closeable
    • cancelled

      volatile boolean cancelled
    • once

      boolean once
  • Constructor Details

  • Method Details

    • request

      public void request(long n)
      Specified by:
      request in interface org.reactivestreams.Subscription
    • run

      abstract void run(long n)
    • cancel

      public void cancel()
      Specified by:
      cancel in interface org.reactivestreams.Subscription
    • 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.
    • offer

      public boolean offer(@NonNull 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(@NonNull T v1, @NonNull 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>