public class MonitorsTest implements Runnable {
    private final Object lock = new Object();
    private int counter;

    @Override
    public void run() {
        for (int i = 0; i < 1000_000_000; i++) {
            synchronized (lock) {
                counter++;
            }
        }
    }

    public static void main(String[] args) throws InterruptedException {
        MonitorsTest test = new MonitorsTest();

        Monitors.startProfiling(test.lock);

        Thread[] threads = new Thread[4];
        for (int i = 0; i < threads.length; i++) {
            threads[i] = new Thread(test);
            threads[i].start();
        }

        for (Thread thread : threads) {
            thread.join();
        }

        Monitors.stopProfiling();

        System.out.println("Total block time = " + Monitors.getBlockTime() + " ns");
        System.out.println("Total block count = " + Monitors.getBlockCount());
    }
}