}
  }

  @Benchmark
  void unorderedPlainLocks(int reps) {
    lockAndUnlock(new ReentrantLock(), reps);
  }

  @Benchmark
  void unorderedCycleDetectingLocks(int reps) {
    lockAndUnlock(factory.newReentrantLock("foo"), reps);
  }

  private static void lockAndUnlock(Lock lock, int reps) {
    for (int i = 0; i < reps; i++) {
      lock.lock();
      lock.unlock();
    }
  }