Generic Sensitivity: Generics-Guided Context Sensitivity for Pointer Analysis

doi:10.1109/TSE.2024.3377645

Generic Sensitivity: Generics-Guided Context Sensitivity for Pointer Analysis

2024-05-01

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DOI：10.1109/TSE.2024.3377645

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Generic programming has found widespread application in object-oriented languages like Java. However, existing context-sensitive pointer analyses fail to leverage the benefits of generic programming. This paper introduces generic sensitivity, a new context customization scheme targeting generics. We design our context customization scheme in such a way that generic instantiation sites, i.e., locations instantiating generic classes/methods with concrete types, are always preserved as key context elements. This is realized by augmenting contexts with a type variable lookup map, which is efficiently generated in a context-sensitive manner throughout the analysis process. We have implemented various variants of generic-sensitive analysis in WALA and conducted extensive experiments to compare it with state-of-the-art approaches, including both traditional and selective context-sensitivity methods. The evaluation results demonstrate that generic sensitivity effectively enhances existing context-sensitivity approaches, striking a new balance between efficiency and precision. For instance, it enables a 1-object-sensitive analysis to achieve overall better precision compared to a 2-object-sensitive analysis, with an average speedup of 12.6 times (up to 62 times).

Keywords:

Sensitivity

Receivers

Java

Resource management

Codes

Software

Benchmark testing

Pointer analysis

generic programming

context sensitivity

Generic Sensitivity: Generics-Guided Context Sensitivity for Pointer Analysis

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