@Footprint(exclude = {Runnable.class, Executor.class, Thread.class, Exception.class})
  public Object measureSize() {
    for (Thread thread : blockedThreads) {
      thread.interrupt();
    }
    blockedThreads.clear();
    Facade<Object> f = impl.newFacade();
    for (int i = 0; i < numThreads; i++) {
      Thread thread =
          new Thread() {
            @Override
            public void run() {

 * <p>
 * The context includes information such as the session ID, active thread count, access count, crawler status,
 * URL filter, rule manager, interval controller, robots.txt URL set, sitemaps, number of threads,
 * maximum thread check count, maximum depth, and maximum access count.
 * </p>
 *
 * <p>
 * It also provides thread-local storage for sitemaps, allowing each thread to have its own set of sitemaps.
 * </p>
 */

    // isn't currently executing this task.
    Runnable currentRunner = get();
    if (currentRunner instanceof Thread) {
      Blocker blocker = new Blocker(this);
      blocker.setOwner(Thread.currentThread());
      if (compareAndSet(currentRunner, blocker)) {
        // Thread.interrupt can throw arbitrary exceptions due to the nio InterruptibleChannel API

    /** The thread being monitored. */
    protected Thread runningThread;

    /** Flag indicating if the thread is still running. */
    protected AtomicBoolean running = new AtomicBoolean();

    /**
     * Constructs an AccessTimeoutTarget with the specified thread.
     * @param thread The thread to monitor.
     */
    public AccessTimeoutTarget(final Thread thread) {
        runningThread = thread;

   *       directExecutor}, the listener can execute in any of three possible threads:
   *       <ol>
   *         <li>When a thread attaches a listener to a {@code ListenableFuture} that's already
   *             complete, the listener runs immediately in that thread.
   *         <li>When a thread attaches a listener to a {@code ListenableFuture} that's

   * <p>On the other hand, if a signalled thread wakes up to discover that its guard is still not
   * satisfied, it does *not* need to call this method before returning to wait. This can only
   * happen due to spurious wakeup (ignorable) or another thread acquiring the lock before the
   * current thread can and returning the guard to the unsatisfied state. In the latter case the

            logger.warn("Failed to write thread dump: file={}", file, e);
        }
    }

    /**
     * Processes all thread information and sends it to the provided consumer.
     *
     * @param writer the consumer that will handle each line of thread dump output
     */
    public static void processThreadDump(final Consumer<String> writer) {

        InputStreamThread thread = new InputStreamThread(is, StandardCharsets.UTF_8, 10, null);
        thread.start();

        Thread.sleep(50);

        String output1 = thread.getOutput();
        boolean contains1 = thread.contains("concurrent1");

        thread.join(1000);

        String output2 = thread.getOutput();
        boolean contains2 = thread.contains("concurrent1");

    /**
     * Flag indicating whether crawler threads run as daemon threads.
     */
    protected boolean daemon = false;

    /**
     * Priority for crawler threads.
     */
    protected int threadPriority = Thread.NORM_PRIORITY;

    /**
     * Reference to the parent thread that started the crawler.
     */
    protected Thread parentThread;

    /**

            });
    assertFalse(task.isDone());
    Thread thread =
        new Thread(
            () -> {
              try {
                task.run();
              } finally {
                exitLatch.countDown();
              }
            },
            "Custom thread name");
    thread.start();
    enterLatch.await();
    assertFalse(task.isDone());