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authorMartin Odersky <odersky@gmail.com>2003-03-10 11:55:36 +0000
committerMartin Odersky <odersky@gmail.com>2003-03-10 11:55:36 +0000
commitd5da7d9aa5a8d4833775454853e81ead20cc37a7 (patch)
treed48297de81cb6c84853b94ae02b6edabee5bce5f /sources/examples/ComputeServer.scala
parent1fb5a195b5575e7015be4fd1ee8f89116a78cfb5 (diff)
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-rw-r--r--sources/examples/ComputeServer.scala32
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diff --git a/sources/examples/ComputeServer.scala b/sources/examples/ComputeServer.scala
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+package examples;
+
+import concurrent._, concurrent.ops._;
+
+class ComputeServer(n: Int) {
+ private trait Job {
+ type t;
+ def task: t;
+ def return(x: t): Unit;
+ }
+
+ private val openJobs = new Channel[Job]();
+
+ private def processor(i: Int): Unit {
+ while (True) {
+ val job = openJobs.read;
+ job.return(job.task)
+ }
+ }
+ def future[a](def p: a): () => a {
+ val reply = new SyncVar[a]();
+ openJobs.write{
+ new Job with {
+ type t = a;
+ def task = p;
+ def return(x: a) = reply.set(x);
+ }
+ }
+ () => reply.get
+ }
+ replicate(1,n){processor}
+}