remibarat

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.RecursiveAction;

/**
 * This example uses a Parent task (e.g. mapping in a custom Map when the Map is full) that will
 * launch * a Child task (e.g. to resize the Map, we need to rehash it). Any new Parent task needs
 * to wait for the Child task to finish. The Child task will also launch Child tasks.
 *
 * The idea is that, a thread B in a child task C0 `join`s a child task C2 and manages to steal a