基于Java的Agent强迁移研究和实现  

A Research and Realization of Strong Migration of Java-based Mobile Agents

作　　者：秦董洪[1] 许倩霞[1] 陈坚[1] 刘平山[1] 

机构地区：[1]桂林电子工业学院计算机系,广西桂林541004

出　　处：《桂林电子工业学院学报》2004年第6期40-45,共6页Journal of Guilin Institute of Electronic Technology

基　　金：广西区科学基金资助项目(桂科青0229032)

摘　　要：实现Agent强迁移的关键问题是捕捉和恢复Agent状态。通过分析JVM的概念及体系结构,提出了一种用来获取类型信息的类型推理机制。根据类型推理机制的实现思想和工作原理,以及运用它捕捉Java程序状态,并通过代码迁移、数据状态迁移和执行状态迁移的关键技术,设计并开发了支持A-gent强迁移的新Java包java.lang.agentpack。完成后的类推方法具有较好的移植性和完整性,能较好解决Agent强迁移问题,不必修改JVM,也不增加额外开销,具有很好的应用价值。Capturing and reestablishing the Agent state is the most important problem in mobile agent strong migration.After a brief introduction and analysis of the concepts and architecture of Java Virtual Machine(JVM),the implement idea and operational principle of the type inference mechanism is described,as well as the process of capturing Java thread state with this mechanism.Finally,the key technique of code migration,data-state migration and runtime-state migration is discussed,and a new Java package(Java.lang.agent-pack) which supports the agent strong migration realization is designed and developed.The proposed method could accomplish the strong migration of mobile agent without modifying JVM or increasing the extra overhead,but with a better portability and integrality.Therefore,this method boosts great application values.

关 键 词：JVM 类型推理机制 Agent强迁移 Agent弱迁移 

分 类 号：TP393.09[自动化与计算机技术—计算机应用技术]