CORBA通讯机制分析

Analysis of the Communication Mechanism of CORBA

一、概述 作为重要的分布式系统模型,OMG (Object Management Group)制定的 CORBA(Common Object Request Broker Architecture)具有其他同类模型所不具备的优势:独立于平台、独立于语言、独立于操作系统,而基于CORBA的领域应用越来越多.随着现实应用需求的不断变化,对分布式系统下通讯方式的要求也日益多样化,这也带动了CORBA在这一方面的不断完善.本文就此分别介绍了CORBA规范[2]中提出的同步通讯模型、异步通讯模型和独立于时间的调用的工作方式,并对各自的优缺点及适用性作了较为详尽的分析;此外又对涉及消息处理的服务质量规范作了扼要的介绍和评述.

With the development of CORBA structure and the updating of requirement of application, there is a trend of diversification in the communication mechanism of CORBA, which includes synchronous model,AMI,TII and so on. In this paper we present the comments on these models,then analyze the specification of quality of service about CORBA messaging.