// validating/BadMicroBenchmark3.java

// (c)2016 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://mindviewinc.com/Books/OnJava/ for more book information.

// Relying on a common resource

import java.util.*;

public class BadMicroBenchmark3 {

static final int SIZE = 20_000_000;

public static void main(String[] args) {

long[] la = new long[SIZE];

Random r = new Random();

System.out.print("parallelSetAll: ");

Time.it(() ->

Arrays.parallelSetAll(la, n -> r.nextLong()));

System.out.print("setAll: ");

Time.it(() ->

Arrays.setAll(la, n -> r.nextLong()));

SplittableRandom sr = new SplittableRandom();

System.out.print("parallelSetAll: ");

Time.it(() ->

Arrays.parallelSetAll(la, n -> sr.nextLong()));

System.out.print("setAll: ");

Time.it(() ->

Arrays.setAll(la, n -> sr.nextLong()));

}

}

/* Output:

parallelSetAll: 4540

setAll: 1540

parallelSetAll: 398

setAll: 739

*/