Scala example source code file (ParallelHashTrieCheck.scala)

This example Scala source code file (ParallelHashTrieCheck.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

anyref, anyref, colltype, int, int, intvalues, parhashmap, parhashmap, parhashset, seq, string, traversable, v, v

The Scala ParallelHashTrieCheck.scala source code

package scala.collection.parallel
package immutable



import org.scalacheck._
import org.scalacheck.Gen
import org.scalacheck.Gen._
import org.scalacheck.Prop._
import org.scalacheck.Properties
import org.scalacheck.Arbitrary._

import scala.collection._
import scala.collection.parallel.ops._


abstract class ParallelHashMapCheck[K, V](tp: String) extends ParallelMapCheck[K, V]("immutable.ParHashMap[" + tp + "]") {
  // ForkJoinTasks.defaultForkJoinPool.setMaximumPoolSize(Runtime.getRuntime.availableProcessors * 2)
  // ForkJoinTasks.defaultForkJoinPool.setParallelism(Runtime.getRuntime.availableProcessors * 2)
  
  type CollType = ParHashMap[K, V]
  
  def isCheckingViews = false
  
  def hasStrictOrder = false
  
  def ofSize(vals: Seq[Gen[(K, V)]], sz: Int) = {
    var hm = new immutable.HashMap[K, V]
    val gen = vals(rnd.nextInt(vals.size))
    for (i <- 0 until sz) hm += sample(gen)
    hm
  }
  
  def fromTraversable(t: Traversable[(K, V)]) = {
    var phm = new ParHashMap[K, V]
    var i = 0
    for (kv <- t.toList) {
      phm += kv
      i += 1
    }
    phm
  }
  
}


object IntIntParallelHashMapCheck extends ParallelHashMapCheck[Int, Int]("Int, Int")
with PairOperators[Int, Int]
with PairValues[Int, Int]
{
  def intvalues = new IntValues {}
  def kvalues = intvalues.values
  def vvalues = intvalues.values
  
  val intoperators = new IntOperators {}
  def voperators = intoperators
  def koperators = intoperators
  
  override def printDataStructureDebugInfo(ds: AnyRef) = ds match {
    case pm: ParHashMap[k, v] =>
      pm.printDebugInfo
    case _ =>
      println("could not match data structure type: " + ds.getClass)
  }
}



abstract class ParallelHashSetCheck[T](tp: String) extends ParallelSetCheck[T]("immutable.ParHashSet[" + tp + "]") {
  // ForkJoinTasks.defaultForkJoinPool.setMaximumPoolSize(Runtime.getRuntime.availableProcessors * 2)
  // ForkJoinTasks.defaultForkJoinPool.setParallelism(Runtime.getRuntime.availableProcessors * 2)
  
  type CollType = ParHashSet[T]
  
  def isCheckingViews = false
  
  def hasStrictOrder = false
  
  def ofSize(vals: Seq[Gen[T]], sz: Int) = {
    var hm = new immutable.HashSet[T]
    val gen = vals(rnd.nextInt(vals.size))
    for (i <- 0 until sz) hm += sample(gen)
    hm
  }
  
  def fromTraversable(t: Traversable[T]) = {
    var phm = new ParHashSet[T]
    var i = 0
    for (kv <- t.toList) {
      phm += kv
      i += 1
    }
    phm
  }
  
  override def printDataStructureDebugInfo(ds: AnyRef) = ds match {
    case pm: ParHashSet[t] =>
      println("Parallel hash set")
    case _ =>
      println("could not match data structure type: " + ds.getClass)
  }
  
}


object IntParallelHashSetCheck extends ParallelHashSetCheck[Int]("Int")
with IntOperators
with IntValues
{
  def intvalues = new IntValues {}
  def kvalues = intvalues.values
  def vvalues = intvalues.values
  
  override def printDataStructureDebugInfo(ds: AnyRef) = ds match {
    case pm: ParHashMap[k, v] =>
      pm.printDebugInfo
    case _ =>
      println("could not match data structure type: " + ds.getClass)
  }
}