void ParCompactionManager::reset() {

  {- -------------------------------------------
  (1) (assert)
      ---------------------------------------- -}

      for(uint i = 0; i < ParallelGCThreads + 1; i++) {
        assert(manager_array(i)->revisit_klass_stack()->is_empty(), "sanity");
        assert(manager_array(i)->revisit_mdo_stack()->is_empty(), "sanity");
      }
    }