OnJava8-Examples/lowlevel/WorkStealingPool.java at master · CSapprenticeWT/OnJava8-Examples · GitHub

Repository navigation

// lowlevel/WorkStealingPool.java

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

// Visit http://OnJava8.com for more book information.

import java.util.stream.*;

import java.util.concurrent.*;

class ShowThread implements Runnable {

@Override public void run() {

System.out.println(

Thread.currentThread().getName());

}

public class WorkStealingPool {

public static void main(String[] args)

throws InterruptedException {

System.out.println(

Runtime.getRuntime().availableProcessors());

ExecutorService exec =

Executors.newWorkStealingPool();

IntStream.range(0, 10)

.mapToObj(n -> new ShowThread())

.forEach(exec::execute);

exec.awaitTermination(1, TimeUnit.SECONDS);

}

/* Output:

ForkJoinPool-1-worker-1

ForkJoinPool-1-worker-2

ForkJoinPool-1-worker-1

ForkJoinPool-1-worker-3

ForkJoinPool-1-worker-4

ForkJoinPool-1-worker-2

ForkJoinPool-1-worker-3

ForkJoinPool-1-worker-5

ForkJoinPool-1-worker-1