Packages

c

scala.concurrent.stm.Txn

UncaughtExceptionCause

case class UncaughtExceptionCause(x: Throwable) extends PermanentRollbackCause with Product with Serializable

The RollbackCause for an atomic block that should not be restarted because it threw an exception. The exception might have been thrown from the body of the atomic block or from a handler invoked before the commit decision. Exceptions used for control flow are not included (see TxnExecutor.isControlFlow).

Scala's STM discards Ref writes performed by atomic blocks that throw an exception. This is referred to as "failure atomicity". In a system that uses exceptions for error cleanup this design tends to preserve the invariants of shared data structures, which is a good thing. If a system uses exceptions for control flow, however, this design may lead to unexpected behavior. The TxnExecutor object's isControlFlow method is used to distinguish exceptions representing control flow transfers from those used to represent error conditions. See TxnExecutor.transformDefault to change the default rules.

Linear Supertypes
Serializable, java.io.Serializable, Product, Equals, PermanentRollbackCause, RollbackCause, AnyRef, Any
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  1. UncaughtExceptionCause
  2. Serializable
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  4. Product
  5. Equals
  6. PermanentRollbackCause
  7. RollbackCause
  8. AnyRef
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Instance Constructors

  1. new UncaughtExceptionCause(x: Throwable)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  8. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
  9. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  10. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  11. final def notify(): Unit
    Definition Classes
    AnyRef
  12. final def notifyAll(): Unit
    Definition Classes
    AnyRef
  13. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  14. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  15. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  16. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  17. val x: Throwable

Inherited from Serializable

Inherited from java.io.Serializable

Inherited from Product

Inherited from Equals

Inherited from PermanentRollbackCause

Inherited from RollbackCause

Inherited from AnyRef

Inherited from Any

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