Method poll

java/org/apache/tomcat/util/threads/TaskQueue.java:113–122

(long timeout, TimeUnit unit)

    @Override
    public Runnable poll(long timeout, TimeUnit unit) throws InterruptedException {
        Runnable runnable = super.poll(timeout, unit);
        if (runnable == null && parent != null) {
            // the poll timed out, it gives an opportunity to stop the current
            // thread if needed to avoid memory leaks.
            parent.stopCurrentThreadIfNeeded();
        }
        return runnable;
    }

    @Override
    public Runnable take() throws InterruptedException {