Online Java Compiler By
JavaTpoint.com
import java.util.ArrayList; import java.util.List; import java.util.concurrent.ForkJoinPool; import java.util.concurrent.RecursiveAction; class Task9 extends RecursiveAction { private long Load = 0; public Task9(long Load) { this.Load = Load; } @Override protected void compute() { //if work is above threshold, break tasks up into smaller tasks List
subtasks = new ArrayList
(); subtasks.addAll(createSubtasks()); for(RecursiveAction subtask : subtasks){ subtask.fork(); } } private List
createSubtasks() { List
subtasks =new ArrayList
(); Task9 subtask1 = new Task9(this.Load / 2); Task9 subtask2 = new Task9(this.Load / 2); Task9 subtask3 = new Task9(this.Load / 2); subtasks.add(subtask1); subtasks.add(subtask2); subtasks.add(subtask3); return subtasks; } } public class JavaForkJoingetActivethreadcountExample1 { public static void main(final String[] arguments) throws InterruptedException { int proc = Runtime.getRuntime().availableProcessors(); System.out.println("numbers of core available in your processor:" +proc); ForkJoinPool Pool = ForkJoinPool.commonPool(); System.out.println(" Before invoking number of active thread :" +Pool.getActiveThreadCount()); Task9 t = new Task9(400); Pool.invoke(t); System.out.println(" After invoking Numbers of active thread :" +Pool.getActiveThreadCount()); System.out.println("Common Pool Size :" +Pool.getPoolSize()); } }
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