From c52f8eaca0d1ccc4c992cba039e35e099b5b478b Mon Sep 17 00:00:00 2001
From: Ivan Topolnjak <ivantopo@gmail.com>
Date: Tue, 6 Jun 2017 14:15:15 +0200
Subject: make it compile for Scala 2.11 and 2.12

---
 .../scala/kamon/util/LazyActorRef.scala            | 69 ----------------------
 1 file changed, 69 deletions(-)
 delete mode 100644 kamon-core/src/legacy-main/scala/kamon/util/LazyActorRef.scala

(limited to 'kamon-core/src/legacy-main/scala/kamon/util/LazyActorRef.scala')

diff --git a/kamon-core/src/legacy-main/scala/kamon/util/LazyActorRef.scala b/kamon-core/src/legacy-main/scala/kamon/util/LazyActorRef.scala
deleted file mode 100644
index a07abea6..00000000
--- a/kamon-core/src/legacy-main/scala/kamon/util/LazyActorRef.scala
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * =========================================================================================
- * Copyright © 2013-2015 the kamon project <http://kamon.io/>
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the
- * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
- * either express or implied. See the License for the specific language governing permissions
- * and limitations under the License.
- * =========================================================================================
- */
-
-package kamon.util
-
-import java.util
-import java.util.concurrent.ConcurrentLinkedQueue
-
-import akka.actor.{Actor, ActorRef}
-import org.HdrHistogram.WriterReaderPhaser
-
-import scala.annotation.tailrec
-
-/**
- *  A LazyActorRef accumulates messages sent to an actor that doesn't exist yet. Once the actor is created and
- *  the LazyActorRef is pointed to it, all the accumulated messages are flushed and any new message sent to the
- *  LazyActorRef will immediately be sent to the pointed ActorRef.
- *
- *  This is intended to be used during Kamon's initialization where some components need to use ActorRefs to work
- *  (like subscriptions and the trace incubator) but our internal ActorSystem is not yet ready to create the
- *  required actors.
- */
-class LazyActorRef {
-  private val _refPhaser = new WriterReaderPhaser
-  private val _backlog = new ConcurrentLinkedQueue[(Any, ActorRef)]()
-  @volatile private var _target: Option[ActorRef] = None
-
-  def tell(message: Any)(implicit sender: ActorRef = Actor.noSender): Unit = {
-    val criticalEnter = _refPhaser.writerCriticalSectionEnter()
-    try {
-      _target.map(_.tell(message, sender)) getOrElse {
-        _backlog.add((message, sender))
-      }
-
-    } finally { _refPhaser.writerCriticalSectionExit(criticalEnter) }
-  }
-
-  def point(target: ActorRef): Unit = {
-    @tailrec def drain(q: util.Queue[(Any, ActorRef)]): Unit = if (!q.isEmpty) {
-      val (msg, sender) = q.poll()
-      target.tell(msg, sender)
-      drain(q)
-    }
-
-    try {
-      _refPhaser.readerLock()
-
-      if (_target.isEmpty) {
-        _target = Some(target)
-        _refPhaser.flipPhase(1000L)
-        drain(_backlog)
-
-      } else sys.error("A LazyActorRef cannot be pointed more than once.")
-    } finally { _refPhaser.readerUnlock() }
-  }
-}
-- 
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