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| Title | Polymorphic Bytecode Instrumentation |
| Authors | Philippe Moret, Walter Binder, Éric Tanter |
| Publication date | 2011 |
| Abstract | Bytecode instrumentation is a widely used technique to implement aspect weaving and dynamic analyses in virtual machines such as the Java Virtual Machine. Aspect weavers and other instrumentations are usually developed independently and combining them often requires significant engineering effort, if at all possible. In this paper we introduce polymorphic bytecode instrumentation (PBI), a simple but effective technique that allows dynamic dispatch amongst several, possibly independent instrumentations. PBI enables complete bytecode coverage, that is, any method with a bytecode representation can be instrumented. We illustrate further benefits of PBI with three case studies. First, we provide an implementation of execution levels for AspectJ, which avoid infinite regression and unwanted interference between aspects. Second, we present a framework for adaptive dynamic analysis, where the analysis to be performed can be changed at runtime by the user. Third, we describe how PBI can be used to support a form of dynamic mixin layers. We provide thorough performance evaluations with dynamic analysis aspects applied to standard benchmarks. We show that PBI-based execution levels are much faster than control flow pointcuts to avoid interference between aspects, and that their efficient integration in a practical aspect language is possible. We also demonstrate that PBI enables adaptive dynamic analysis tools that are more reactive to user inputs than existing tools that rely on dynamic aspect-oriented programming with runtime weaving. |
| Downloaded | 10 times |
| Pages | 129-140 |
| Conference name | International Conference on Aspect-Oriented Software Development |
| Publisher | ACM Press (New York, NY, USA) |
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