69 lines
1.5 KiB
Scala
69 lines
1.5 KiB
Scala
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// http://www.scala-lang.org/node/54
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package examples.actors
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import scala.actors.Actor
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import scala.actors.Actor._
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abstract class PingMessage
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case object Start extends PingMessage
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case object SendPing extends PingMessage
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case object Pong extends PingMessage
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abstract class PongMessage
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case object Ping extends PongMessage
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case object Stop extends PongMessage
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object pingpong extends Application {
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val pong = new Pong
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val ping = new Ping(100000, pong)
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ping.start
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pong.start
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ping ! Start
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}
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class Ping(count: Int, pong: Actor) extends Actor {
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def act() {
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println("Ping: Initializing with count "+count+": "+pong)
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var pingsLeft = count
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loop {
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react {
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case Start =>
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println("Ping: starting.")
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pong ! Ping
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pingsLeft = pingsLeft - 1
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case SendPing =>
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pong ! Ping
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pingsLeft = pingsLeft - 1
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case Pong =>
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if (pingsLeft % 1000 == 0)
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println("Ping: pong from: "+sender)
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if (pingsLeft > 0)
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self ! SendPing
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else {
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println("Ping: Stop.")
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pong ! Stop
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exit('stop)
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}
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}
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}
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}
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}
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class Pong extends Actor {
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def act() {
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var pongCount = 0
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loop {
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react {
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case Ping =>
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if (pongCount % 1000 == 0)
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println("Pong: ping "+pongCount+" from "+sender)
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sender ! Pong
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pongCount = pongCount + 1
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case Stop =>
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println("Pong: Stop.")
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exit('stop)
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}
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}
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}
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}
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