DOS的EXEC功能调用分析

THE ANALYSIS OF DOS FUNCTION EXEC

在微型计算机上得到广泛普及的DOS(Disk Operating System)操作系统中,怎样实现父进程对子进程的创建、激活,然后由父进程收回控制权而使其消亡,即所谓的EXEC(Execute)功能。本文首先讨论了该功能的实现方法,尽可能详尽地揭示出其内部细节;然后通过两个实例,具体演示了工作过程。

To make a parent process call a child process is socalled EXEC function in DOS.In this paper, we discuss the method of realizing this EXEC function, and give two examples to show itsworking procedure.