基于容错技术的优先级反转研究  

Research on priority inversion based on fault-tolerant

作　　者：赵奇[1] 索晓冉[1] 方琦军[1] 

机构地区：[1]河北工程大学信息与电气工程学院,河北邯郸056038

出　　处：《计算机应用研究》2008年第9期2634-2636,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(60474019);河北省自然科学基金资助项目(F2005000482)

摘　　要：优先级反转是实时系统中出现最多的问题。为了防止这种现象的发生,目前经常采用的方法是优先级继承和优先级置顶。但是,它们在特定情况下也存在缺陷。容错技术是提高系统可靠性的重要保障,利用容错技术对优先级继承进行扩展,可以更好地解决优先级的反转问题,保障了系统的实时性能。Priority inversion is the most problem in the real-time system. At present, priority inheritance and priority ceiling are often adopted to prevent the phenomenon of priority inversion. However, the two ways have some disadvantages in a given situation. So fault-tolerant is adopted to improve the reliability of the system. This paper expanded priority inheritance based on fault-tolerant to allow a better solution to the problem of priority inversion and ensured the real-time performance of the realtime system.

关 键 词：实时系统 优先级反转 优先级继承 容错优先级 

分 类 号：TP162[自动化与计算机技术—控制理论与控制工程]