Scala example source code file (ParallelVectorCheck.scala)

This example Scala source code file (ParallelVectorCheck.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

colltype, int, int, intparallelvectorcheck, intseqoperators, intvalues, parallelvectorcheck, parallelvectorcheck, parvector, parvector, seq, seq, string

The Scala ParallelVectorCheck.scala source code

package scala.collection
package parallel.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._


import immutable.Vector
import immutable.VectorBuilder




abstract class ParallelVectorCheck[T](tp: String) extends collection.parallel.ParallelSeqCheck[T]("ParVector[" + tp + "]") {
  // ForkJoinTasks.defaultForkJoinPool.setMaximumPoolSize(Runtime.getRuntime.availableProcessors * 2)
  // ForkJoinTasks.defaultForkJoinPool.setParallelism(Runtime.getRuntime.availableProcessors * 2)
  
  type CollType = ParVector[T]
  
  def isCheckingViews = false
  
  def hasStrictOrder = true

  def ofSize(vals: Seq[Gen[T]], sz: Int) = {
    val vb = new immutable.VectorBuilder[T]()
    val gen = vals(rnd.nextInt(vals.size))
    for (i <- 0 until sz) vb += sample(gen)
    vb.result
  }
  
  def fromSeq(a: Seq[T]) = {
    val pa = ParVector.newCombiner[T]
    for (elem <- a.toList) pa += elem
    pa.result
  }
  
}



object IntParallelVectorCheck extends ParallelVectorCheck[Int]("Int") with IntSeqOperators with IntValues {
  override def instances(vals: Seq[Gen[Int]]) = oneOf(super.instances(vals), sized { sz =>
    (0 until sz).toArray.toSeq
  }, sized { sz =>
    (-sz until 0).toArray.toSeq
  })
}