Packages

final class TrampolineExecutionContext extends ExecutionContextExecutor

A scala.concurrentExecutionContext implementation that executes runnables immediately, on the current thread, by means of a trampoline implementation.

Can be used in some cases to keep the asynchronous execution on the current thread, as an optimization, but be warned, you have to know what you're doing.

The TrampolineExecutionContext keeps a reference to another underlying context, to which it defers for:

  • reporting errors
  • deferring the rest of the queue in problematic situations

Deferring the rest of the queue happens:

  • in case we have a runnable throwing an exception, the rest of the tasks get re-scheduled for execution by using the underlying context
  • in case we have a runnable triggering a Scala blocking context, the rest of the tasks get re-scheduled for execution on the underlying context to prevent any deadlocks

Thus this implementation is compatible with the scala.concurrent.BlockContext, detecting blocking blocks and reacting by forking the rest of the queue to prevent deadlocks.

Source
TrampolineExecutionContext.scala
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  1. TrampolineExecutionContext
  2. ExecutionContextExecutor
  3. Executor
  4. ExecutionContext
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  1. final def !=(arg0: Any): Boolean
    Definition Classes
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  8. def execute(runnable: Runnable): Unit
    Definition Classes
    TrampolineExecutionContext → Executor → ExecutionContext
  9. final def getClass(): Class[_ <: AnyRef]
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    @native() @HotSpotIntrinsicCandidate()
  10. def hashCode(): Int
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  11. final def isInstanceOf[T0]: Boolean
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  12. final def ne(arg0: AnyRef): Boolean
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  13. final def notify(): Unit
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  14. final def notifyAll(): Unit
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    @native() @HotSpotIntrinsicCandidate()
  15. def reportFailure(t: Throwable): Unit
    Definition Classes
    TrampolineExecutionContext → ExecutionContext
  16. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
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  17. def toString(): String
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  18. final def wait(arg0: Long, arg1: Int): Unit
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    @throws(classOf[java.lang.InterruptedException])
  19. final def wait(arg0: Long): Unit
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    @throws(classOf[java.lang.InterruptedException]) @native()
  20. final def wait(): Unit
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Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
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    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated
  2. def prepare(): ExecutionContext
    Definition Classes
    ExecutionContext
    Annotations
    @deprecated
    Deprecated

    (Since version 2.12.0) preparation of ExecutionContexts will be removed

Inherited from Executor

Inherited from ExecutionContext

Inherited from AnyRef

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