Byte Code Engineering

Dahm, Markus

doi:10.1007/978-3-642-60247-4_25

Cited by 147 publications

(131 citation statements)

References 5 publications

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“…The bytecode engineering library BCEL [21] represents method bodies as graph structures. Individual bytecode instructions are mapped to Java objects.…”

Section: Bytecode Manipulationmentioning

confidence: 99%

Platform‐independent profiling in a virtual execution environment

et al. 2008

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SUMMARYVirtual execution environments, such as the Java Virtual Machine, promote platform-independent software development. However, when it comes to analyzing algorithm complexity and performance bottlenecks, available tools focus on platform-specific metrics, such as e.g. the CPU time consumption on a particular system. Other drawbacks of many prevailing profiling tools are high overhead, significant measurement perturbation, as well as reduced portability of profiling tools, which are often implemented in platformdependent native code. This article presents a novel profiling approach, which is entirely based on program transformation techniques, in order to build a profiling data structure that provides calling-contextsensitive program execution statistics. We explore the use of platform-independent profiling metrics, in order to make the instrumentation entirely portable and to generate reproducible profiles. We implemented these ideas within a Java-based profiling tool called JP. A significant novelty is that this tool achieves complete bytecode coverage, by statically instrumenting the core runtime libraries, and dynamically instrumenting the rest of the code. JP provides a small and flexible API to write customized profiling agents in pure Java, which are periodically activated to process the collected profiling information. Performance measurements point out that, despite the presence of dynamic instrumentation, JP causes significantly less overhead than a prevailing tool for the profiling of Java code.

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“…The bytecode engineering library BCEL [21] represents method bodies as graph structures. Individual bytecode instructions are mapped to Java objects.…”

Section: Bytecode Manipulationmentioning

confidence: 99%

Platform‐independent profiling in a virtual execution environment

et al. 2008

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“…It is the task of the lower layer of our tool (currently provided by BCEL [15]) to ensure the transparent conversion of jumps and branches into their wide, 64K bytecodes-enabled counterparts when the required offsets are too large. 13 Whereas the Simple transformation scheme only slightly expands existing offsets, the more advanced schemes, like the SPP transformation, may from time to time generate new jumps over longer distances inside the method body, in order to execute accounting correction code.…”

Section: Impact On Code Sizementioning

confidence: 99%

“…Our approach also fits this description, since we reify the CPU consumption, which is an original idea. J-RAF2 relies on the Byte Code Engineering Library BCEL [15] for the low-level operations.…”

Section: Related Workmentioning

confidence: 99%

Program transformations for light-weight CPU accounting and control in the Java virtual machine

Hulaas

Binder

2008

Higher-Order Symb Comput

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Abstract.This article constitutes a thorough presentation of an original scheme for portable CPU accounting and control in Java, which is based on program transformation techniques at the bytecode level and can be used with every standard Java Virtual Machine. In our approach applications, middleware, and even the standard Java runtime libraries (i.e., the Java Development Kit) are modified in a fully portable way, in order to expose details regarding the execution of threads. These transformations however incur a certain overhead at runtime. Further contributions of this article are the systematic review of the origin of such overheads and the description of a new static path prediction scheme targeted at reducing them.

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“…The Web Container is implemented using a light-weight HTTP engine called Simple (see [4]). We use the Byte Code Engineering Library (BCEL) from the Apache Foundation (see [2]) to inspect the contents of a Java class file. Using BCEL, it is relatively easy to translate a class-file to XMLVM.…”

Section: Architecturementioning

confidence: 99%

A Code Migration Framework for AJAX Applications

Puder

2006

Distributed Applications and Interoperable Systems

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Abstract. AJAX (Asynchronous JavaScript and XML) defines a new paradigm for writing highly interactive web applications. Prominent web sites such as Google Maps have made AJAX popular. Writing AJAX applications requires intimate knowledge of JavaScript since it is difficult to write cross-browser portable JavaScript applications. In this paper we first discuss the benefits of AJAX compared to other technologies such as Java applets. Then we propose a code migration framework that allows the programmer to write AJAX applications in Java. The Java application is automatically translated to JavaScript and migrated to the browser for execution. Our approach requires no knowledge of JavaScript. As web applications are written in Java, the developer benefits from powerful debugging tools that are not available for JavaScript. We have implemented a prototype that demonstrates the feasibility of our ideas. The prototype is available under an Open Source license.

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Byte Code Engineering

Cited by 147 publications

References 5 publications

Platform‐independent profiling in a virtual execution environment

Platform‐independent profiling in a virtual execution environment

Program transformations for light-weight CPU accounting and control in the Java virtual machine

A Code Migration Framework for AJAX Applications

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