继承异常的分析与解决

继承异常是用来描述在并发面向对象语言中继承与并发的冲突 .为分析并解决这种冲突 ,人们做了大量的工作 ,但我们认为以前的分类是不完全的 .本文对继承异常做了系统的分析 ,并设计了一个新的同步模型 ,为每个方法增加了同步策略与同步状态控制 ,加大了并发对象的代码可重用性 .本文用实例说明了该模型 ,在很大程度上避免或减少了“继承异常”的发生 .

ANALYSIS AND SOLUTION TO INHERITANCE ANOMALY

The term "inheritance anomaly" was coined to describe the conflict between inheritance and concurrency in the concurrent object oriented languages. Although intensive efforts have been made to analyze and slove this conflict, we consider that the previous categorizations are incomplete. In this paper, we perform a systematic analysis of the inheritance anomaly and derive a new classification of it. We have proposed a kind of compositional synchronisation control model, it attaches the synchronisation strategy and synchronisation state control with each method and enhances the reusability for the code of the concurrent object. We use several examples to illustrate that this model avoid or decrease the occurrence of "inheritance anomaly" to a great extend.