Scala example source code file (SynchronizedSet.scala)

This example Scala source code file (SynchronizedSet.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

a, boolean, consider, list, scripting, self, synchronization, traversableonce, u, unit

The SynchronizedSet.scala Scala example source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */


package scala
package collection
package mutable

import script._

/** This class should be used as a mixin. It synchronizes the `Set`
 *  functions of the class into which it is mixed in.
 *
 *  @tparam A    type of the elements contained in this synchronized set.
 *
 *  @author  Matthias Zenger
 *  @version 1.0, 08/07/2003
 *  @since   1
 *  @define Coll `SynchronizedSet`
 *  @define coll synchronized set
 */
@deprecated("Synchronization via traits is deprecated as it is inherently unreliable.  Consider java.util.concurrent.ConcurrentHashMap[A,Unit] as an alternative.", "2.11.0")
trait SynchronizedSet[A] extends Set[A] {
  abstract override def size: Int = synchronized {
    super.size
  }

  override def isEmpty: Boolean = synchronized {
    super.isEmpty
  }

  abstract override def contains(elem: A) = synchronized {
    super.contains(elem)
  }

  abstract override def +=(elem: A): this.type = synchronized[this.type] {
    super.+=(elem)
  }

  override def ++=(xs: TraversableOnce[A]): this.type = synchronized[this.type] {
    super.++=(xs)
  }

  abstract override def -=(elem: A): this.type = synchronized[this.type] {
    super.-=(elem)
  }

  override def --=(xs: TraversableOnce[A]): this.type = synchronized[this.type] {
    super.--=(xs)
  }

  override def update(elem: A, included: Boolean): Unit = synchronized {
    super.update(elem, included)
  }

  override def add(elem: A): Boolean = synchronized {
    super.add(elem)
  }

  override def remove(elem: A): Boolean = synchronized {
    super.remove(elem)
  }

  override def intersect(that: scala.collection.GenSet[A]) = synchronized {
    super.intersect(that)
  }

  abstract override def clear(): Unit = synchronized {
    super.clear()
  }

  override def subsetOf(that: scala.collection.GenSet[A]) = synchronized {
    super.subsetOf(that)
  }

  override def foreach[U](f: A =>  U) = synchronized {
    super.foreach(f)
  }

  override def retain(p: A => Boolean) = synchronized {
    super.retain(p)
  }

  override def toList: List[A] = synchronized {
    super.toList
  }

  override def toString = synchronized {
    super.toString
  }

  @deprecated("Scripting is deprecated.", "2.11.0")
  override def <<(cmd: Message[A]): Unit = synchronized {
    super.<<(cmd)
  }

  override def clone(): Self = synchronized {
    super.clone()
  }
}