288 ScheduleObj *ScheduleObj::_instance = NULL;  member in ScheduleObj
291     if (NULL == _instance)  in Instance()
293         _instance = new ScheduleObj();  in Instance()
296     return _instance;  in Instance()
504 MtFrame *MtFrame::_instance = NULL;  member in MtFrame
507     if (NULL == _instance )  in Instance()
509         _instance = new MtFrame();  in Instance()
512     return _instance;  in Instance()
581     if (NULL == _instance )  in Destroy()
625     _instance->DestroyPool();  in Destroy()
626     _instance->TermKqueue();  in Destroy()
627     delete _instance;  in Destroy()
628     _instance = NULL;  in Destroy()