Dalvik在CAR构件运行时中的应用研究  

The Research of Dalvik Working with CAR Runtime Environment

作　　者：陈卫伍 王建民[1] 陈榕[1] CHEN Wei-wu, WANG Jian-min, CHEN Rong （System Software Engineering Centre, Tongji University, Shanghai 200092, China）

机构地区：[1]同济大学基础软件工程中心,上海200092

出　　处：《电脑知识与技术》2010年第11期8865-8868,共4页Computer Knowledge and Technology

基　　金：核高基重大专项：“智能手机嵌入式软件平台研发及产业化”（课题编号：2009ZX01039-002-002）

摘　　要：CAR是一种二进制构件技术，Elastos是CAR技术的软件生态环境，是CAR构件的运行时环境。Elastos的表现形式是操作系统或中间件，它通过把网络纳入计算及存储，统一管理，简化了在高度分布式网络环境中的应用程序开发。Java是跨平台的语言，它依赖的是Java虚拟机在特定平台上对Java虚拟机规范的满足。Java程序依赖lava虚拟机解释执行，在性能上不如可以编译执行的本地代码，软件尺寸、功耗等表现也不如本地代码。该文在基于Google的开源工程Dalvik基础上，结合CAR和Java虚拟杌技术，在Elastos平台上提出了一种Java和CAR混合编程的技术．旨在达到让Java虚拟机上运行CAR构件目的的同时，利用CAP．构件提高Java程序的运行速度而不破坏lava的编程模型。从而起到优化JAVA运行时的目的。CAK is a binary component technology, and Elastos is a software environment based on CAR technology, the running enviroment of CAR Component. Elastos represents as operating system or middleware, and treats the net as computing and storing resources. This make the application development easily in distributed network enviroment. Java is a cross-platform language, this feature depends on the Java virtual machine to satisfy The Java Virtual Machine Specification on the specific platform. Java program have to be interpreted before being executed on Java virtual machine, then its performance, power and size can hardly be accomplished with native code. This paper presents a technology called Java＆CAR mixed prograrrmung model, which is base on dalvik, the Google＇s open-source project, simulta- neously take CAR and Java virtual machine technology into consideration. The Java＆CAR. let CAR cooperate with Java virtual machine, this will make the Java program work more effectively but needn＇ t change the Java programming model.

关 键 词：JAVA JAVA虚拟机 CAP.构件 ELASTOS Ddvik 

分 类 号：TP391[自动化与计算机技术—计算机应用技术;自动化与计算机技术—计算机科学与技术]