基于反射中间件的异构分布式实时调度系统

1.引言随着计算机网络技术的发展,分布式实时应用的领域也越来越多,其典型的商业化产品有分布式虚拟现实系统、分布式多媒体协作系统、多选手在线网络游戏等。这些系统往往具有复杂的、严格的QoS需求,如:时间延迟、抖动、可靠性需求等。为了能更好地实现这些系统,其关键问题是要解决产生于不同终端系统的竞争者(Competitor)(如分布式线程、对CORBA对象的操作等)之间的灵活通信及很好地保持其端

A Heterogeneous Distributed Real-Time Scheduling System Based on Reflective Middleware

In order to help manage the complexity, heterogeneity and dynamic inherent in distributed real-time systems, middleware of next generation should deal with changing environments and different client requirements. it is very necessary to resolve interoperability between heterogeneous schedulers. Therefore, this promotes the research of a heterogeneous distributed real-time scheduling system based on reflective middleware. The features of reflection technology and reflective middleware are described in detail first. As a result, proposed reflective middleware is used to resolve interoperability between heterogeneous schedulers in distributed real time system. The high performance,adaptability and feasibility of this middleware platform used to resolve interoperability between heterogeneous schedulers are proved in details by a concrete example. Future trends of research in this field are listed at the end.