WindowsNTI/O子系统对象结构分析

ANALYSIS OF OBJECTS STRUCTURE IN WINDOWS NT I/O SUBSYSTEM

在面向对象技术中，数据结构被封装到一个对象中，对外部不可见，它们同外部的通信通过一组定义好的访问接口函数来完成的．在ＷｉｎｄｏｗｓＮＴ系统中使用面向对象技术来管理所有的数据结构，在ＷｉｎｄｏｗｓＮＴ输入输出子系统中的各个部分（如驱动程序、设备等），都采用对象来描述，它们在Ｉ／Ｏ管理器的作用下，统一协调地完成系统的输入输出功能．本文较为深入地分析了ＷｉｎｄｏｗｓＮＴＩ／Ｏ子系统所涉及各种对象以及它们的作用、数据结构及其相互关系．

In object oriented Technology, data structures are encapsulated in an object are invisible to external. The communication with external is implemented through a set of well defined interface functions. OO is used to manage all data structures in Windows NT. In the input/output of Windows NT, every components are described by object, those objects work cooperatively under the control of I/O manager to finish the system I/O. In this paper, the objects involved in Windows NT I/O subsystem together with their action, data structure and inter relations are deeply analyzed.