Packages

c

akka.util

Switch

class Switch extends AnyRef

An atomic switch that can be either on or off

Source
LockUtil.scala
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Instance Constructors

  1. new Switch(startAsOn: Boolean = false)

Value Members

  1. def fold[T](on: ⇒ T)(off: ⇒ T): T

    Executes the provided callbacks depending on if the switch is either on or off waiting for any pending changes to happen before (locking) Be careful of longrunning or blocking within the provided action as it can lead to deadlocks or bad performance

  2. def ifOff(action: ⇒ Unit): Boolean

    Executes the provided action and returns if the action was executed or not, if the switch is IMMEDIATELY off (i.e.

    Executes the provided action and returns if the action was executed or not, if the switch is IMMEDIATELY off (i.e. no lock involved)

  3. def ifOffYield[T](action: ⇒ T): Option[T]

    Executes the provided action and returns its value if the switch is IMMEDIATELY off (i.e.

    Executes the provided action and returns its value if the switch is IMMEDIATELY off (i.e. no lock involved)

  4. def ifOn(action: ⇒ Unit): Boolean

    Executes the provided action and returns if the action was executed or not, if the switch is IMMEDIATELY on (i.e.

    Executes the provided action and returns if the action was executed or not, if the switch is IMMEDIATELY on (i.e. no lock involved)

  5. def ifOnYield[T](action: ⇒ T): Option[T]

    Executes the provided action and returns its value if the switch is IMMEDIATELY on (i.e.

    Executes the provided action and returns its value if the switch is IMMEDIATELY on (i.e. no lock involved)

  6. def isOff: Boolean

    Returns whether the switch is IMMEDIATELY off (no locking)

  7. def isOn: Boolean

    Returns whether the switch is IMMEDIATELY on (no locking)

  8. def locked[T](code: ⇒ T): T

    Executes the given code while holding this switch’s lock, i.e.

    Executes the given code while holding this switch’s lock, i.e. protected from concurrent modification of the switch status.

  9. def switchOff: Boolean

    Switches the switch off (if on), uses locking

  10. def switchOff(action: ⇒ Unit): Boolean

    Executes the provided action if the lock is on under a lock, so be _very_ careful with longrunning/blocking operations in it Only executes the action if the switch is on, and switches it off immediately after obtaining the lock Will switch it back on if the provided action throws an exception

  11. def switchOn: Boolean

    Switches the switch on (if off), uses locking

  12. def switchOn(action: ⇒ Unit): Boolean

    Executes the provided action if the lock is off under a lock, so be _very_ careful with longrunning/blocking operations in it Only executes the action if the switch is off, and switches it on immediately after obtaining the lock Will switch it back off if the provided action throws an exception

  13. def whileOff(action: ⇒ Unit): Boolean

    Executes the provided action and returns if the action was executed or not, if the switch is off, waiting for any pending changes to happen before (locking) Be careful of longrunning or blocking within the provided action as it can lead to deadlocks or bad performance

  14. def whileOffYield[T](action: ⇒ T): Option[T]

    Executes the provided action and returns its value if the switch is off, waiting for any pending changes to happen before (locking) Be careful of longrunning or blocking within the provided action as it can lead to deadlocks or bad performance

  15. def whileOn(action: ⇒ Unit): Boolean

    Executes the provided action and returns if the action was executed or not, if the switch is on, waiting for any pending changes to happen before (locking) Be careful of longrunning or blocking within the provided action as it can lead to deadlocks or bad performance

  16. def whileOnYield[T](action: ⇒ T): Option[T]

    Executes the provided action and returns its value if the switch is on, waiting for any pending changes to happen before (locking) Be careful of longrunning or blocking within the provided action as it can lead to deadlocks or bad performance