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Overview:

Software evolves to fix bugs and add features, but stopping and restarting existing programs to take advantage of these changes can be inconvenient and costly. Dynamic Software Updating (DSU) addresses these problems by updating programs while they run. This paper presents the design and implementation of a JVM they call JVOLVE that is enhanced with DSU support. The paper's key insight is that flexible, safe, and efficient DSU can be supported by naturally extending existing VM services. By piggybacking on classloading and garbage collection, JVOLVE can flexibly support additions and replacements of fields and methods anywhere within the class hierarchy, and in a manner that may alter class signatures.

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Format:PDFSize:201 KB
Date:May 2008
Pages:14

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