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基于事件的通信是许多分布系统进行异步交互的重要途径 .传统的分布事件管理机制既无法解决分布应用的异构性、复杂性和集成性 ,又无法充分支持实时环境 .分布对象计算的主流技术 CORBA是解决前一个难题的最佳手段 ,但标准的 CORBA事件服务又缺乏对实时应用的支持 .为此 ,本文研究了事件通信在分布实时环境中呈现出的新特性 ,分析了 CORBA事件服务的不足 ,提出了基于 CORBA的分布实时事件管理技术 .通过实时化标准的 CORBA事件服务 ,设计实现了 DREAMS系统 ,为 CORBA在实时领域的应用推广作出了有意义的尝试 .
Event-based communication is an important way for many distributed systems to interact asynchronously.Traditional distributed event management mechanism can not solve the heterogeneity, complexity and integration of distributed applications and can not fully support the real-time environment.The mainstream technology of distributed object computing CORBA is the best way to solve the former problem, but the standard CORBA event service lacks support for real-time application.Therefore, this paper studies the new features of event communication in distributed real-time environment, analyzes the CORBA event service It proposes a distributed real-time event management technology based on CORBA.Through the real-time standard CORBA event service, the DREAMS system is designed and implemented, making a meaningful attempt for the application of CORBA in the real-time field.