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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2005-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.actors
import java.lang.Runnable
import java.util.concurrent.Callable
import scala.concurrent.forkjoin.RecursiveAction
/**
* @author Philipp Haller
*/
private[actors] class ReactorTask[Msg >: Null](var reactor: Reactor[Msg],
var fun: () => Any,
var handler: PartialFunction[Msg, Any],
var msg: Msg)
extends RecursiveAction with Callable[Unit] with Runnable {
def run() {
try {
beginExecution()
try {
if (fun eq null)
handler(msg)
else
fun()
} catch {
case _: KillActorControl =>
// do nothing
case e: Exception if reactor.exceptionHandler.isDefinedAt(e) =>
reactor.exceptionHandler(e)
}
reactor.kill()
}
catch {
case _: SuspendActorControl =>
// do nothing (continuation is already saved)
case e: Throwable =>
terminateExecution(e)
reactor.terminated()
if (!e.isInstanceOf[Exception])
throw e
} finally {
suspendExecution()
this.reactor = null
this.fun = null
this.handler = null
this.msg = null
}
}
def call() = run()
def compute() = run()
protected def beginExecution() {}
protected def suspendExecution() {}
protected def terminateExecution(e: Throwable) {
Console.err.println(reactor+": caught "+e)
e.printStackTrace()
}
}
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