分布对象中间件异步消息的研究与实现

随着Internet和大规模Intranet的出现和飞速发展，软件系统之间逐渐构成一个开放协同的软件环境．异步通信机制是支撑开放协同环境的重要机制，CORBA是一种在开放协同环境中得到广泛应用的主流分布对象中间件，它没有很好地解决异步通信问题．在CORBA中提供异步通信机制成为研究的热点．该文基于CORBA异步消息标准提出了一种包含回调、轮询和T11(Time Independent Invocation)三种机制的异步模型，并在StarBus中进行了实现．实现结果和初步应用表明，该文提出的异步模型方案对于将CORBA应用于大规模分布式开放协同环境具有重要意义。

Research and Implementation of Asynchronous Messaging in Object-Oriented Middleware

With the emergence and popularization of Internet and large-scale Intranet, software systems form an open coordination software environment. Asynchronous communication mechanism is one of the indispensable mechanisms that support open coordination environment. As a kind of popular distributed middleware widely used in open coordination environment, CORBA doesn't solve asynchronous communication very well. Researches on how to provide asynchronous mechanism are hotspot. This paper presents an asynchronous model consist of callback, polling and time independent invocation mechanism based on the CORBA Messaging specification. Authors have developed the StarBus asynchronous messaging system based on the schema presented in this paper. The implementation results and initial usage shows the asynchronous model is important for the application of CORBA to large-scale open coordination environment.