Packages

class LightArrayRevolverScheduler extends Scheduler with Closeable

This scheduler implementation is based on a revolving wheel of buckets, like Netty’s HashedWheelTimer, which it advances at a fixed tick rate and dispatches tasks it finds in the current bucket to their respective ExecutionContexts. The tasks are held in TaskHolders, which upon cancellation null out their reference to the actual task, leaving only this shell to be cleaned up when the wheel reaches that bucket next time. This enables the use of a simple linked list to chain the TaskHolders off the wheel.

Also noteworthy is that this scheduler does not obtain a current time stamp when scheduling single-shot tasks, instead it always rounds up the task delay to a full multiple of the TickDuration. This means that tasks are scheduled possibly one tick later than they could be (if checking that “now() + delay <= nextTick” were done).

Source
LightArrayRevolverScheduler.scala
Linear Supertypes
Closeable, AutoCloseable, Scheduler, AnyRef, Any
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  1. LightArrayRevolverScheduler
  2. Closeable
  3. AutoCloseable
  4. Scheduler
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  6. Any
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Instance Constructors

  1. new LightArrayRevolverScheduler(config: Config, log: LoggingAdapter, threadFactory: ThreadFactory)

Value Members

  1. val ShutdownTimeout: FiniteDuration
  2. val TickDuration: FiniteDuration
  3. val WheelSize: Int
  4. def close(): Unit
    Definition Classes
    LightArrayRevolverScheduler → Closeable → AutoCloseable
  5. val maxFrequency: Double

    The maximum supported task frequency of this scheduler, i.e.

    The maximum supported task frequency of this scheduler, i.e. the inverse of the minimum time interval between executions of a recurring task, in Hz.

    Definition Classes
    LightArrayRevolverScheduler → Scheduler
  6. def schedule(initialDelay: FiniteDuration, delay: FiniteDuration, runnable: Runnable)(implicit executor: ExecutionContext): Cancellable

    Schedules a Runnable to be run repeatedly with an initial delay and a frequency.

    Schedules a Runnable to be run repeatedly with an initial delay and a frequency. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would set delay = Duration(2, TimeUnit.SECONDS) and interval = Duration(100, TimeUnit.MILLISECONDS). If the execution of the runnable takes longer than the interval, the subsequent execution will start immediately after the prior one completes (there will be no overlap of executions of the runnable). In such cases, the actual execution interval will differ from the interval passed to this method.

    If the Runnable throws an exception the repeated scheduling is aborted, i.e. the function will not be invoked any more.

    Definition Classes
    LightArrayRevolverScheduler → Scheduler
    Exceptions thrown

    IllegalArgumentException if the given delays exceed the maximum reach (calculated as: delay / tickNanos > Int.MaxValue). Java API

  7. def schedule(initialDelay: Duration, interval: Duration, runnable: Runnable)(implicit executor: ExecutionContext): Cancellable

    Schedules a Runnable to be run repeatedly with an initial delay and a frequency.

    Schedules a Runnable to be run repeatedly with an initial delay and a frequency. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would set delay = Duration(2, TimeUnit.SECONDS) and interval = Duration(100, TimeUnit.MILLISECONDS). If the execution of the runnable takes longer than the interval, the subsequent execution will start immediately after the prior one completes (there will be no overlap of executions of the runnable). In such cases, the actual execution interval will differ from the interval passed to this method.

    If the Runnable throws an exception the repeated scheduling is aborted, i.e. the function will not be invoked any more.

    Definition Classes
    Scheduler
    Exceptions thrown

    IllegalArgumentException if the given delays exceed the maximum reach (calculated as: delay / tickNanos > Int.MaxValue). Java API

  8. final def schedule(initialDelay: FiniteDuration, interval: FiniteDuration)(f: ⇒ Unit)(implicit executor: ExecutionContext): Cancellable

    Schedules a function to be run repeatedly with an initial delay and a frequency.

    Schedules a function to be run repeatedly with an initial delay and a frequency. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would set delay = Duration(2, TimeUnit.SECONDS) and interval = Duration(100, TimeUnit.MILLISECONDS). If the execution of the function takes longer than the interval, the subsequent execution will start immediately after the prior one completes (there will be no overlap of the function executions). In such cases, the actual execution interval will differ from the interval passed to this method.

    If the function throws an exception the repeated scheduling is aborted, i.e. the function will not be invoked any more.

    Scala API

    Definition Classes
    Scheduler
  9. final def schedule(initialDelay: Duration, interval: Duration, receiver: ActorRef, message: Any, executor: ExecutionContext, sender: ActorRef): Cancellable

    Schedules a message to be sent repeatedly with an initial delay and frequency.

    Schedules a message to be sent repeatedly with an initial delay and frequency. E.g. if you would like a message to be sent immediately and thereafter every 500ms you would set delay=Duration.Zero and interval=Duration(500, TimeUnit.MILLISECONDS)

    Java API

    Definition Classes
    Scheduler
  10. final def schedule(initialDelay: FiniteDuration, interval: FiniteDuration, receiver: ActorRef, message: Any)(implicit executor: ExecutionContext, sender: ActorRef = Actor.noSender): Cancellable

    Schedules a message to be sent repeatedly with an initial delay and frequency.

    Schedules a message to be sent repeatedly with an initial delay and frequency. E.g. if you would like a message to be sent immediately and thereafter every 500ms you would set delay=Duration.Zero and interval=Duration(500, TimeUnit.MILLISECONDS)

    Java & Scala API

    Definition Classes
    Scheduler
    Annotations
    @silent()
  11. def scheduleOnce(delay: FiniteDuration, runnable: Runnable)(implicit executor: ExecutionContext): Cancellable

    Schedules a Runnable to be run once with a delay, i.e.

    Schedules a Runnable to be run once with a delay, i.e. a time period that has to pass before the runnable is executed.

    Definition Classes
    LightArrayRevolverScheduler → Scheduler
    Exceptions thrown

    IllegalArgumentException if the given delays exceed the maximum reach (calculated as: delay / tickNanos > Int.MaxValue). Java & Scala API

  12. def scheduleOnce(delay: Duration, runnable: Runnable)(implicit executor: ExecutionContext): Cancellable

    Schedules a Runnable to be run once with a delay, i.e.

    Schedules a Runnable to be run once with a delay, i.e. a time period that has to pass before the runnable is executed.

    Definition Classes
    Scheduler
    Exceptions thrown

    IllegalArgumentException if the given delays exceed the maximum reach (calculated as: delay / tickNanos > Int.MaxValue). Java & Scala API

  13. final def scheduleOnce(delay: FiniteDuration)(f: ⇒ Unit)(implicit executor: ExecutionContext): Cancellable

    Schedules a function to be run once with a delay, i.e.

    Schedules a function to be run once with a delay, i.e. a time period that has to pass before the function is run.

    Definition Classes
    Scheduler
    Exceptions thrown

    IllegalArgumentException if the given delays exceed the maximum reach (calculated as: delay / tickNanos > Int.MaxValue). Scala API

  14. final def scheduleOnce(delay: Duration, receiver: ActorRef, message: Any, executor: ExecutionContext, sender: ActorRef): Cancellable

    Schedules a message to be sent once with a delay, i.e.

    Schedules a message to be sent once with a delay, i.e. a time period that has to pass before the message is sent.

    Definition Classes
    Scheduler
    Exceptions thrown

    IllegalArgumentException if the given delays exceed the maximum reach (calculated as: delay / tickNanos > Int.MaxValue). Java API

  15. final def scheduleOnce(delay: FiniteDuration, receiver: ActorRef, message: Any)(implicit executor: ExecutionContext, sender: ActorRef = Actor.noSender): Cancellable

    Schedules a message to be sent once with a delay, i.e.

    Schedules a message to be sent once with a delay, i.e. a time period that has to pass before the message is sent.

    Definition Classes
    Scheduler
    Exceptions thrown

    IllegalArgumentException if the given delays exceed the maximum reach (calculated as: delay / tickNanos > Int.MaxValue). Java & Scala API