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-rw-r--r--docs/examples/actors/message.scala35
1 files changed, 35 insertions, 0 deletions
diff --git a/docs/examples/actors/message.scala b/docs/examples/actors/message.scala
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+++ b/docs/examples/actors/message.scala
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+package examples.actors
+
+import scala.actors._; import scala.actors.Actor._
+
+object message {
+ def main(args: Array[String]) = {
+ val n = try { Integer.parseInt(args(0)) }
+ catch {
+ case _ =>
+ scala.Console.println("Usage: examples.actors.Message <n>")
+ Predef.exit
+ }
+ val nActors = 500
+ val finalSum = n * nActors
+ Scheduler.impl = new SingleThreadedScheduler
+
+ def beh(next: Actor, sum: int): unit =
+ react {
+ case value: int =>
+ val j = value + 1; val nsum = sum + j
+ if (next == null && nsum >= finalSum)
+ Console.println(nsum)
+ else {
+ if (next != null) next ! j
+ beh(next, nsum)
+ }
+ }
+
+ def actorChain(i: Int, a: Actor): Actor =
+ if (i > 0) actorChain(i-1, actor(beh(a, 0))) else a
+
+ val firstActor = actorChain(nActors, null)
+ var i = n; while (i > 0) { firstActor ! 0; i = i-1 }
+ }
+}