lock.lock();

    boolean satisfied = false;
    try {
      return satisfied = guard.isSatisfied();
    } finally {
      if (!satisfied) {
        lock.unlock();
      }
    }
  }

  /**
   * Enters this monitor if the guard is satisfied. Blocks at most the given time acquiring the
   * lock, but does not wait for the guard to be satisfied.
   *

    }

    @Override
    public boolean isSatisfied() {
      return state() == NEW;
    }
  }

  private final Guard isStoppable = new IsStoppableGuard();

  @WeakOuter
  private final class IsStoppableGuard extends Guard {
    IsStoppableGuard() {
      super(AbstractService.this.monitor);
    }

    @Override
    public boolean isSatisfied() {
      return state().compareTo(RUNNING) <= 0;

    private volatile boolean satisfied;

    public TestGuard(boolean satisfied) {
      super(MonitorTestCase.this.monitor);
      this.satisfied = satisfied;
    }

    @Override
    public boolean isSatisfied() {
      return this.satisfied;
    }

    public void setSatisfied(boolean satisfied) {
      this.satisfied = satisfied;
    }
  }

  private final boolean interruptible;

    private volatile boolean satisfied;

    public TestGuard(boolean satisfied) {
      super(MonitorTestCase.this.monitor);
      this.satisfied = satisfied;
    }

    @Override
    public boolean isSatisfied() {
      return this.satisfied;
    }

    public void setSatisfied(boolean satisfied) {
      this.satisfied = satisfied;
    }
  }

  private final boolean interruptible;

    notEmpty =
        new Monitor.Guard(monitor) {
          @Override
          public boolean isSatisfied() {
            return count > 0;
          }
        };
    notFull =
        new Monitor.Guard(monitor) {
          @Override
          public boolean isSatisfied() {
            return count < items.length;
          }
        };
  }

  /**

    notEmpty =
        new Monitor.Guard(monitor) {
          @Override
          public boolean isSatisfied() {
            return count > 0;
          }
        };
    notFull =
        new Monitor.Guard(monitor) {
          @Override
          public boolean isSatisfied() {
            return count < items.length;
          }
        };
  }

  /**

  static class FlagGuard extends Monitor.Guard {

    private boolean satisfied;

    protected FlagGuard(Monitor monitor) {
      super(monitor);
    }

    @Override
    public boolean isSatisfied() {
      return satisfied;
    }

    public void setSatisfied(boolean satisfied) {
      this.satisfied = satisfied;
    }
  }

  private final Method method;

      AwaitHealthGuard() {
        super(ServiceManagerState.this.monitor);
      }

      @Override
      @GuardedBy("ServiceManagerState.this.monitor")
      public boolean isSatisfied() {
        // All services have started or some service has terminated/failed.
        return states.count(RUNNING) == numberOfServices
            || states.contains(STOPPING)
            || states.contains(TERMINATED)

  static class FlagGuard extends Monitor.Guard {

    private boolean satisfied;

    protected FlagGuard(Monitor monitor) {
      super(monitor);
    }

    @Override
    public boolean isSatisfied() {
      return satisfied;
    }

    public void setSatisfied(boolean satisfied) {
      this.satisfied = satisfied;
    }
  }

  private final Method method;

  final PriorityQueue<E> q;
  final Monitor monitor = new Monitor(true);
  private final Monitor.Guard notEmpty =
      new Monitor.Guard(monitor) {
        @Override
        public boolean isSatisfied() {
          return !q.isEmpty();
        }
      };

  /**
   * Creates a {@code MonitorBasedPriorityBlockingQueue} with the default initial capacity (11) that