scala.ref.ReferenceQueue.scala Maven / Gradle / Ivy
/*
* Scala (https://www.scala-lang.org)
*
* Copyright EPFL and Lightbend, Inc.
*
* Licensed under Apache License 2.0
* (http://www.apache.org/licenses/LICENSE-2.0).
*
* See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*/
package scala.ref
/**
* @author Sean McDirmid
* @author Philipp Haller
*/
class ReferenceQueue[+T <: AnyRef] {
private[ref] val underlying: java.lang.ref.ReferenceQueue[_ <: T] = new java.lang.ref.ReferenceQueue[T]
override def toString = underlying.toString
protected def Wrapper(jref: java.lang.ref.Reference[_]): Option[Reference[T]] =
jref match {
case null => None
case ref => Some(ref.asInstanceOf[ReferenceWithWrapper[T]].wrapper)
}
def poll: Option[Reference[T]] = Wrapper(underlying.poll)
def remove: Option[Reference[T]] = Wrapper(underlying.remove)
def remove(timeout: Long): Option[Reference[T]] = Wrapper(underlying.remove(timeout))
}