void Management::record_vm_startup_time(jlong begin, jlong duration) {

      // if the performance counter is not initialized,
      // then vm initialization failed; simply return.
      if (_begin_vm_creation_time == NULL) return;

      _begin_vm_creation_time->set_value(begin);
      _end_vm_creation_time->set_value(begin + duration);
      PerfMemory::set_accessible(true);
    }