Second, The system structure, Interrupt Request Level, Thread Scheduler, Asynchronous Procedure Call(APC) and Local Process Call of Windows 2000 are analyzed, and some methods are produced. 其次,对Windows2000系统结构,中断机制,线程调度机制,及其异步过程调用(APC)和LPC机制进行了分析,从而得到在Windows2000中完成实时性任务可用的一些方法。