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1 引言随着计算机硬件、软件的迅速发展,尤其是网络的广泛使用,大量的应用需要跨网段、跨平台地进行协同工作,分布式实时系统也面临同样的问题。事实上,典型的分布式实时系统必须经过精心定制以便能在专用系统上运行。虽然这些定制的系统为实时应用的操作提供了所需条件,但是它创建了一个不灵活的结构,存在不容易修改、升级和与第三方产品集成的缺点。
1 Introduction With the rapid development of computer hardware and software, especially the extensive use of the network, a large number of applications need to work together across network segments and platforms. The distributed real-time system also faces the same problem. In fact, a typical distributed real-time system must be carefully crafted to run on a dedicated system. Although these customized systems provide the required conditions for real-time application operations, they create an inflexible structure with the drawback of being difficult to modify, upgrade, and integrate with third-party products.