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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/95203

    Title: 利用Java 正反組譯器進行位元組碼最佳化
    Other Titles: The Impact of IS Professional Skills and Career Anchors on the Supply and Demand of IS Personnel
    Authors: 楊哲豪;周敬斐;廖賀田
    Contributors: 淡江大學資訊管理學系
    Keywords: 組合語言;組譯器;虛擬機器;Assembly;Assembler;Virtual Machine;Java
    Date: 2006-04
    Issue Date: 2014-02-11 15:53:19 (UTC+8)
    Abstract: 本論文分析Java 虛擬機器的指令並提出Java 組合語言,依據Java 組合語言設計實作Java 正反組譯器。本論文的Java 組合語言在語法上比其他組合語言簡單,不但可以用來增進程式效能,更可以作為學習Java 虛擬機器的輔助工具。為了改善程式執行效能,使用者可以利用效能探查器(Profiler)找出效能不佳的方法,再對該方法進行反組譯後再最佳化。最佳化後的Java 組合語言(Java Assembly)透過正組譯器壓縮成類別檔。經由實驗發現最佳化後的位元組碼(Bytecode)可以改進程式執行效能。
    In this paper we specify the Java assembly language called JAsm based on the instructions of Java Virtual Machine. According to the specification, we design and implement the Java Assembler and Disassembler of JAsm. The syntax of JAsm is simpler and more powerful than other Java assembly language. JAsm can not only be used to improve program performance, but be practical tool for learning the Java Virtual Machine. In order to improve performance, the programmer can use the Profiler to detect the methods suffer from poor performance. Furthermore, make use of the Disassembler of JAsm to disassemble the methods which desirous to optimize. After Optimizing, the programmer can utilize the Assembler of JAsm to compress the Bytecode into the class file. The experiments demonstrate that the optimized Bytecode can improve program performance.
    Relation: 2006數位科技與創新管理國際研討會論文集=Proceedings of 2006 International Conference of Digital Technology and Innovation Management,12頁
    Appears in Collections:[資訊管理學系暨研究所] 會議論文

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