摘要
本文讨论VAX/VMS操作系统的异步系统陷阱(AST)的概念和特点以及与它有关的系统服务QIO,然后提出利用AST的嵌套方法建立进程内多维I/O操作序列的模型,最后给出这个模型在通讯程序设计中的应用实例。
In this paper,the concept and features of asynchronous system trap(AST)of VAX/VMS as well as QIO system service are briefly discussed.A processmodel of multidimensional I/O operation sequences is then presented by nesting theAST routines,To illustrate the application of this model,a communication task forlinking two computers through communication ports is mapped onto this model andthe application program is described in terms of structural modules.
出处
《计算机应用与软件》
CSCD
1992年第2期42-47,共6页
Computer Applications and Software
