Java bytecode compression for low-end embedded systems

Clausen, Lars; Schultz, Ulrik Pagh; Consel, Charles; Muller, Gilles

doi:10.1145/353926.353933

Cited by 70 publications

(54 citation statements)

References 14 publications

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“…Another difference is related to the physical size of each of these memory types. The physical size constraints on a smart card dictate RAM memory/Flash memory ration often resulting in considerably smaller RAM memory in comparison to Flash memory [5,6].…”

Section: Methodsmentioning

confidence: 99%

An improvement for applets download speed using transaction buffer based on RAM memory of Java Card system using IC chip

Seok

Jung

2011

IEICE Electron. Express

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Java Card technology is already a standard for smart cards and (U) SIM cards using an IC chip. Java Card technology has a problem related to slow execution speed of a program. It is also supports the transaction mechanism based on Flash memory to guarantee the integrity of data and a complete transaction during the execution of applets or downloading of applets. It is caused by too many Flash memory writing operations. In this paper, we have proposed a method to reduce the number of writing that new transaction mechanism in RAM memory.

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Section: Methodsmentioning

confidence: 99%

An improvement for applets download speed using transaction buffer based on RAM memory of Java Card system using IC chip

Seok

Jung

2011

IEICE Electron. Express

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“…At present we use a simple format for the Descriptor file, in the future we will look at compression techniques [1,2,3,4,10,12] to reduce its size. Since the Descriptor file would only be needed during the installation of new applications and not during normal execution, it would seem a fair trade off to use encoding schemes that are slow to access, but provide good space savings.…”

Section: Class File Compressionmentioning

confidence: 99%

“…There has been previous work on compressing class files, while remaining directly executable. Clausen et al [4] shows how bytecodes can be compressed, while Bizzotto & Grimaud [2] extends the idea further. The details of this approach is beyond the scope of this paper, but shows that class file sizes could be reduced further, while remaining executable "as is".…”

Section: Overall Code Compressionmentioning

confidence: 99%

Tokenisation of Class Files for an Embedded Java Processor

Haggett

Knowles

Bignell

2007

6th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2007)

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We present a new approach to extend the tokenisation scheme used in Java Card to allow for both invokevirtual and invokeinterface calls to be dispatched using the same virtual method table. An algorithm is described for token assignment to identify methods that can use the same token, even in the presence of interfaces. As a consequence much of the string data in the class files is no longer required at runtime, resulting in compression of the class files by a factor of two. This is applied to the Java 2 Micro Edition (J2ME) platform and simplifies the method dispatch process to the point where it can be implemented directly in hardware.

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“…Static program analysis for identifying repetitive sequences of bytecodes for compression has been studied in [38,39]. Casey et al [40] proposed a Java instruction, called superinstruction, to reduce the number of instruction dispatches.…”

Section: Related Workmentioning

confidence: 99%