package org.warp.commonutils.locks;

import java.util.concurrent.Phaser;

public class FlexibleCountDownLatch {

	private final Phaser phaser;

	public FlexibleCountDownLatch(int initialSize) {
		this.phaser = new Phaser(initialSize + 1);
	}

	public void await() {
		phaser.arriveAndAwaitAdvance();
	}

	public void grow() {
		phaser.register();
	}

	public void grow(int n) {
		phaser.bulkRegister(n);
	}

	public void countDown() {
		phaser.arriveAndDeregister();
	}
}