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WorkStealingPool.java
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40 lines (38 loc) · 1.03 KB
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// lowlevel/WorkStealingPool.java
// (c)2021 MindView LLC: see Copyright.txt
// 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:
8
ForkJoinPool-1-worker-1
ForkJoinPool-1-worker-2
ForkJoinPool-1-worker-1
ForkJoinPool-1-worker-3
ForkJoinPool-1-worker-4
ForkJoinPool-1-worker-4
ForkJoinPool-1-worker-2
ForkJoinPool-1-worker-3
ForkJoinPool-1-worker-5
ForkJoinPool-1-worker-1
*/