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Eliminate the allocation on each aroundRecieve #20748

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Johan "Party Cannon" Andrén 2016-12-02 11:08:15 +01:00 • committed by GitHub
parent 088aeb7c96
commit 213fa616a8
1 changed files with 16 additions and 1 deletions
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17
akka-actor/src/main/scala/akka/actor/Actor.scala
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@ -364,6 +364,16 @@ object Actor {
* that will be translated to the receiving system's deadLetters.
*/
final val noSender: ActorRef = null
/**
* INTERNAL API
*/
private final val NotHandled = new Object
/**
* INTERNAL API
*/
private final val notHandledFun = (_: Any) ⇒ NotHandled
}
/**
@ -481,7 +491,12 @@ trait Actor {
* @param receive current behavior.
* @param msg current message.
*/
protected[akka] def aroundReceive(receive: Actor.Receive, msg: Any): Unit = receive.applyOrElse(msg, unhandled)
protected[akka] def aroundReceive(receive: Actor.Receive, msg: Any): Unit = {
// optimization: avoid allocation of lambda
if (receive.applyOrElse(msg, Actor.notHandledFun).asInstanceOf[AnyRef] eq Actor.NotHandled) {
unhandled(msg)
}
}
/**
* Can be overridden to intercept calls to `preStart`. Calls `preStart` by default.