@GuardedBy("lock")
    private int runningTasks = 0;

    @GuardedBy("lock")
    private boolean shutdown = false;

    @Override
    public void execute(Runnable command) {
      startTask();
      try {
        command.run();
      } finally {
        endTask();
      }
    }

    @Override
    public boolean isShutdown() {
      synchronized (lock) {
        return shutdown;

    }
  }

  private static final class Listener {
    final Runnable command;
    final Executor executor;

    Listener(Runnable command, Executor executor) {
      this.command = checkNotNull(command);
      this.executor = checkNotNull(executor);
    }

    void execute() {
      try {
        executor.execute(command);
      } catch (RuntimeException e) {
        log.log(
            Level.SEVERE,

  private Throwable thrownByExecutionThread;
  private final Executor exceptionCatchingExecutor =
      new Executor() {
        @Override
        public void execute(Runnable command) {
          executionThread = new Thread(command);
          executionThread.setUncaughtExceptionHandler(
              new UncaughtExceptionHandler() {
                @Override

      return inline.submit(task, result);
    }

    @Override
    public void execute(Runnable command) {
      lastMethodCalled = "execute";
      assertThat(command).isInstanceOf(WrappedRunnable.class);
      inline.execute(command);
    }

    private static <T> void assertTaskWrapped(Collection<? extends Callable<T>> tasks) {

      new ScheduledThreadPoolExecutor(10) {
        @Override
        public ScheduledFuture<?> scheduleWithFixedDelay(
            Runnable command, long initialDelay, long delay, TimeUnit unit) {
          return future = super.scheduleWithFixedDelay(command, initialDelay, delay, unit);
        }
      };

  public void testServiceStartStop() throws Exception {
    NullService service = new NullService();

  private static class FakeExecutor implements Executor {
    Queue<Runnable> tasks = Queues.newArrayDeque();

    @Override
    public void execute(Runnable command) {
      tasks.add(command);
    }

    boolean hasNext() {
      return !tasks.isEmpty();
    }

    void runNext() {
      assertTrue("expected at least one task to run", hasNext());
      tasks.remove().run();

      new ScheduledThreadPoolExecutor(10) {
        @Override
        public ScheduledFuture<?> scheduleWithFixedDelay(
            Runnable command, long initialDelay, long delay, TimeUnit unit) {
          return future = super.scheduleWithFixedDelay(command, initialDelay, delay, unit);
        }
      };

  public void testServiceStartStop() throws Exception {
    NullService service = new NullService();

/**
 * A specification of a {@link CacheBuilder} configuration.
 *
 * <p>{@code CacheBuilderSpec} supports parsing configuration off of a string, which makes it
 * especially useful for command-line configuration of a {@code CacheBuilder}.
 *
 * <p>The string syntax is a series of comma-separated keys or key-value pairs, each corresponding
 * to a {@code CacheBuilder} method.
 *
 * <ul>

  private Throwable thrownByExecutionThread;
  private final Executor exceptionCatchingExecutor =
      new Executor() {
        @Override
        public void execute(Runnable command) {
          executionThread = new Thread(command);
          executionThread.setUncaughtExceptionHandler(
              new UncaughtExceptionHandler() {
                @Override

  private static class FakeExecutor implements Executor {
    Queue<Runnable> tasks = Queues.newArrayDeque();

    @Override
    public void execute(Runnable command) {
      tasks.add(command);
    }

    boolean hasNext() {
      return !tasks.isEmpty();
    }

    void runNext() {
      assertTrue("expected at least one task to run", hasNext());
      tasks.remove().run();