class CallingThreadDispatcher extends MessageDispatcher

Dispatcher which runs invocations on the current thread only. This dispatcher does not create any new threads, but it can be used from different threads concurrently for the same actor. The dispatch strategy is to run on the current thread unless the target actor is either suspendSwitch or already running on the current thread (if it is running on a different thread, then this thread will block until that other invocation is finished); if the invocation is not run, it is queued in a thread-local queue to be executed once the active invocation further up the call stack finishes. This leads to completely deterministic execution order if only one thread is used.

Suspending and resuming are global actions for one actor, meaning they can affect different threads, which leads to complications. If messages are queued (thread-locally) during the suspendSwitch period, the only thread to run them upon resume is the thread actually calling the resume method. Hence, all thread-local queues which are not currently being drained (possible, since suspend-queue-resume might happen entirely during an invocation on a different thread) are scooped up into the current thread-local queue which is then executed. It is possible to suspend an actor from within its call stack.

Source
CallingThreadDispatcher.scala
Since

1.1

Linear Supertypes
MessageDispatcher, ExecutionContextExecutor, ExecutionContext, BatchingExecutor, Executor, AbstractMessageDispatcher, AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. CallingThreadDispatcher
  2. MessageDispatcher
  3. ExecutionContextExecutor
  4. ExecutionContext
  5. BatchingExecutor
  6. Executor
  7. AbstractMessageDispatcher
  8. AnyRef
  9. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new CallingThreadDispatcher(_configurator: MessageDispatcherConfigurator)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toany2stringadd[CallingThreadDispatcher] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (CallingThreadDispatcher, B)
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toArrowAssoc[CallingThreadDispatcher] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. final def attach(actor: ActorCell): Unit

    Attaches the specified actor instance to this dispatcher, which includes scheduling it to run for the first time (Create() is expected to have been enqueued by the ActorCell upon mailbox creation).

    Attaches the specified actor instance to this dispatcher, which includes scheduling it to run for the first time (Create() is expected to have been enqueued by the ActorCell upon mailbox creation).

    Definition Classes
    MessageDispatcher
  8. def batchable(runnable: Runnable): Boolean

    Override this to define which runnables will be batched.

    Override this to define which runnables will be batched.

    Definition Classes
    BatchingExecutor
  9. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
  10. val configurator: MessageDispatcherConfigurator
    Definition Classes
    MessageDispatcher
  11. def createMailbox(actor: Cell, mailboxType: MailboxType): CallingThreadMailbox

    Creates and returns a mailbox for the given actor.

    Creates and returns a mailbox for the given actor.

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  12. final def detach(actor: ActorCell): Unit

    Detaches the specified actor instance from this dispatcher

    Detaches the specified actor instance from this dispatcher

    Definition Classes
    MessageDispatcher
  13. def dispatch(receiver: ActorCell, handle: Envelope): Unit

    Will be called when the dispatcher is to queue an invocation for execution

    Will be called when the dispatcher is to queue an invocation for execution

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  14. def ensuring(cond: (CallingThreadDispatcher) => Boolean, msg: => Any): CallingThreadDispatcher
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toEnsuring[CallingThreadDispatcher] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  15. def ensuring(cond: (CallingThreadDispatcher) => Boolean): CallingThreadDispatcher
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toEnsuring[CallingThreadDispatcher] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  16. def ensuring(cond: Boolean, msg: => Any): CallingThreadDispatcher
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toEnsuring[CallingThreadDispatcher] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  17. def ensuring(cond: Boolean): CallingThreadDispatcher
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toEnsuring[CallingThreadDispatcher] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  18. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  19. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  20. val eventStream: EventStream
    Definition Classes
    MessageDispatcher
  21. def execute(runnable: Runnable): Unit
    Definition Classes
    BatchingExecutor → Executor
  22. def executeTask(invocation: TaskInvocation): Unit

    INTERNAL API

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  23. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  24. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  25. def id: String

    Identifier of this dispatcher, corresponds to the full key of the dispatcher configuration.

    Identifier of this dispatcher, corresponds to the full key of the dispatcher configuration.

    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  26. final def inhabitants: Long
    Definition Classes
    MessageDispatcher
  27. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  28. final val isThroughputDeadlineTimeDefined: Boolean

    INTERNAL API

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    MessageDispatcher
  29. val log: LoggingAdapter
  30. val mailboxes: Mailboxes
    Definition Classes
    MessageDispatcher
  31. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  32. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  33. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  34. def register(actor: ActorCell): Unit

    If you override it, you must call it.

    If you override it, you must call it. But only ever once. See "attach" for only invocation.

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  35. def registerForExecution(mbox: Mailbox, hasMessageHint: Boolean, hasSystemMessageHint: Boolean): Boolean

    Suggest to register the provided mailbox for execution

    Suggest to register the provided mailbox for execution

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  36. def reportFailure(t: Throwable): Unit
    Definition Classes
    MessageDispatcher → ExecutionContext
  37. final def resubmitOnBlock: Boolean
    Attributes
    protected
    Definition Classes
    MessageDispatcher → BatchingExecutor
  38. def resume(actor: ActorCell): Unit
    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  39. def shutdown(): Unit

    Called one time every time an actor is detached from this dispatcher and this dispatcher has no actors left attached Must be idempotent

    Called one time every time an actor is detached from this dispatcher and this dispatcher has no actors left attached Must be idempotent

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  40. def shutdownTimeout: FiniteDuration

    When the dispatcher no longer has any actors registered, how long will it wait until it shuts itself down, defaulting to your akka configs "akka.actor.default-dispatcher.shutdown-timeout" or default specified in reference.conf

    When the dispatcher no longer has any actors registered, how long will it wait until it shuts itself down, defaulting to your akka configs "akka.actor.default-dispatcher.shutdown-timeout" or default specified in reference.conf

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  41. def suspend(actor: ActorCell): Unit

    After the call to this method, the dispatcher mustn't begin any new message processing for the specified reference

    After the call to this method, the dispatcher mustn't begin any new message processing for the specified reference

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  42. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  43. def systemDispatch(receiver: ActorCell, message: SystemMessage): Unit

    Will be called when the dispatcher is to queue an invocation for execution

    Will be called when the dispatcher is to queue an invocation for execution

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  44. def throughput: Int

    INTERNAL API

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  45. def throughputDeadlineTime: FiniteDuration

    INTERNAL API

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  46. def toString(): String
    Definition Classes
    AnyRef → Any
  47. final def unbatchedExecute(r: Runnable): Unit
    Attributes
    protected
    Definition Classes
    MessageDispatcher → BatchingExecutor
  48. def unregister(actor: ActorCell): Unit

    If you override it, you must call it.

    If you override it, you must call it. But only ever once. See "detach" for the only invocation

    INTERNAL API

    Attributes
    protected[akka]
    Definition Classes
    CallingThreadDispatcherMessageDispatcher
  49. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  50. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  51. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated
  2. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toStringFormat[CallingThreadDispatcher] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  3. def prepare(): ExecutionContext
    Definition Classes
    ExecutionContext
    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0) preparation of ExecutionContexts will be removed

  4. def [B](y: B): (CallingThreadDispatcher, B)
    Implicit
    This member is added by an implicit conversion from CallingThreadDispatcher toArrowAssoc[CallingThreadDispatcher] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from MessageDispatcher

Inherited from ExecutionContext

Inherited from BatchingExecutor

Inherited from Executor

Inherited from AbstractMessageDispatcher

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromCallingThreadDispatcher to any2stringadd[CallingThreadDispatcher]

Inherited by implicit conversion StringFormat fromCallingThreadDispatcher to StringFormat[CallingThreadDispatcher]

Inherited by implicit conversion Ensuring fromCallingThreadDispatcher to Ensuring[CallingThreadDispatcher]

Inherited by implicit conversion ArrowAssoc fromCallingThreadDispatcher to ArrowAssoc[CallingThreadDispatcher]

Ungrouped