scalaz.concurrent

Actor

final case class Actor[A](handler: (A) ⇒ Unit, onError: (Throwable) ⇒ Unit = ActorUtils.rethrowError)(implicit strategy: Strategy) extends Product with Serializable

Processes messages of type A, one at a time. Messages are submitted to the actor with the method !. Processing is typically performed asynchronously, this is controlled by the provided strategy.

Memory consistency guarantee: when each message is processed by the handler, any memory that it mutates is guaranteed to be visible by the handler when it processes the next message, even if the strategy runs the invocations of handler on separate threads. This is achieved because the Actor reads a volatile memory location before entering its event loop, and writes to the same location before suspending.

Implementation based on non-intrusive MPSC node-based queue, described by Dmitriy Vyukov: http://www.1024cores.net/home/lock-free-algorithms/queues/non-intrusive-mpsc-node-based-queue

A

The type of messages accepted by this actor.

handler

The message handler

onError

Exception handler, called if the message handler throws any Throwable.

strategy

Execution strategy, for example, a strategy that is backed by an ExecutorService

Source
Actor.scala
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Instance Constructors

  1. new Actor(handler: (A) ⇒ Unit, onError: (Throwable) ⇒ Unit = ActorUtils.rethrowError)(implicit strategy: Strategy)

    handler

    The message handler

    onError

    Exception handler, called if the message handler throws any Throwable.

    strategy

    Execution strategy, for example, a strategy that is backed by an ExecutorService

Value Members

  1. def !(a: A): Unit

    Alias for apply

  2. final def !=(arg0: AnyRef): Boolean

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  3. final def !=(arg0: Any): Boolean

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  4. final def ##(): Int

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  5. final def ==(arg0: AnyRef): Boolean

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  6. final def ==(arg0: Any): Boolean

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  7. def apply(a: A): Unit

    Pass the message a to the mailbox of this actor

  8. final def asInstanceOf[T0]: T0

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  9. def clone(): AnyRef

    Attributes
    protected[java.lang]
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    Annotations
    @throws( ... )
  10. def contramap[B](f: (B) ⇒ A): Actor[B]

  11. final def eq(arg0: AnyRef): Boolean

    Definition Classes
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  12. def finalize(): Unit

    Attributes
    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  13. final def getClass(): Class[_]

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  14. val handler: (A) ⇒ Unit

    The message handler

  15. final def isInstanceOf[T0]: Boolean

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  16. final def ne(arg0: AnyRef): Boolean

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  17. final def notify(): Unit

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  18. final def notifyAll(): Unit

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  19. val onError: (Throwable) ⇒ Unit

    Exception handler, called if the message handler throws any Throwable.

  20. implicit val strategy: Strategy

    Execution strategy, for example, a strategy that is backed by an ExecutorService

  21. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
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  22. val toEffect: Run[A]

  23. final def wait(): Unit

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    @throws( ... )
  24. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )
  25. final def wait(arg0: Long): Unit

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Inherited from Serializable

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