Scala演员：JRE 1.5和1.6不同的行为

我的GUI模拟可以在github：http://github.com/pmeiclx/scala_gear_simulation上找到

也许你记得my first problem with actors.解决这些问题后，我做了一个GUI的模拟，我得到了这个新的“奇怪”的行为。

以下是无GUI的代码：

package ch.clx.actorversions

import actors.Actor
import actors.Actor._
import collection.mutable.ListBuffer

case class ReceivedSpeed(gear: Gear)
case object StartSync

case class SyncGear(controller: GearController,syncSpeed: Int)

object ActorVersion {

  def main(args:Array[String]) = {
    println("[App] start with creating gears")
    val gearList = new ListBuffer[Gear]()
    for (i <- 0 until 100) {
      gearList += new Gear(i)
    }

    val gearController = new GearController(gearList)

    gearController.start()
    gearController ! StartSync
  }
}

/**
 * CONTROLLER
 */
class GearController(nGears: ListBuffer[Gear]) extends Actor {
  private var syncGears = new ListBuffer[Gear]
  private var syncSpeed = 0
  def act = {
    while(true) {
      receive {
        case StartSync => {
          println("[Controller] Send commands for syncing to gears!")
          var speeds = new ListBuffer[Int]
          nGears.foreach(e => speeds += e.speed)

          //Calc avg
          //var avgSpeed = speeds.foldLeft(0)(_ + _) / speeds.length
          //var avgSpeed = speeds.foldLeft(0) { (x,y) => x + y } / speeds.length
          syncSpeed = (0/:speeds)(_ + _) / speeds.length //Average over all gear speeds

          //TODO syncSpeed auf Median ausrichten

          println("[Controller] calculated syncSpeed: "+syncSpeed)
          nGears.foreach{e =>
                         e.start()
                         e ! SyncGear(this,syncSpeed)
          }
          println("[Controller] started all gears")
        }
        case ReceivedSpeed(gear: Gear) => {
          println("[Controller] Syncspeed received by a gear ("+gear.gearId+")")
          //println("[Controller] mailboxsize: "+self.mailboxSize)
          syncGears += gear
          if(syncGears.length == nGears.length) {
            println("[Controller] all gears are back in town!")
            System.exit(0)
          }
        }
        case _ => println("[Controller] No match :(")
      }
    }
  }
}

/**
 * GEAR
 */
class Gear(id: Int) extends Actor {

  private var mySpeed = scala.util.Random.nextInt(1000)
  private var myController: GearController = null

  def speed = mySpeed
  def gearId = id

  /* Constructor */
  println("[Gear ("+id+")] created with speed: "+mySpeed)

  def act = {
    loop {
      react {
        case SyncGear(controller: GearController,syncSpeed: Int) => {
          //println("[Gear ("+id+")] activated,try to follow controller command (form mySpeed ("+mySpeed+") to syncspeed ("+syncSpeed+")")
          myController = controller
          adjustSpeedTo(syncSpeed)
        }
      }
    }
  }

  def adjustSpeedTo(targetSpeed: Int) = {
    if(targetSpeed > mySpeed) {
      mySpeed += 1
      self ! SyncGear(myController,targetSpeed)
    }else if(targetSpeed < mySpeed) {
      mySpeed -= 1
      self ! SyncGear(myController,targetSpeed)
    } else if(targetSpeed == mySpeed) {
      callController
    }
  }

  def callController = {
    println("[Gear ("+id+")] has syncSpeed")
    myController ! ReceivedSpeed(this)
  }
}