Observatorio de I+D+i UPM

Descripción
Finding useful sharing information between instances in object-oriented programs has recently been the focus of much research. The applications of such static analysis Applications are multiple: by knowing which variables definitely do not share in memory we can apply conventional compiler optimizations, find coarse-grained parallelism opportunities, or, more importantly, verify certain correctness aspects of programs even in the absence of annotations. In this paper we introduce a framework for deriving precise sharing information based on abstract interpretation for a Java-like language.Our analysis achieves precision in various ways, including supporting multivariance, which allows separating different contexts. We propose a combined Set Sharing + Nullity + Classes domain which captures which instances do not share and which ones are definitively null, and which uses the classes to refine the static information when inheritance is present. The use of a set sharing abstraction allows a more precise representation of the existing sharings and is crucial in achieving precision during interprocedural analysis. Carrying the domains in a combined way facilitates the interaction among them in the presence of multivariance in the analysis. We show through examples and experimentally that both the set sharing part of the domain as well as the combined domain provide more accurate information than previous work based on pair sharing domains, at reasonable cost.
Internacional	Si
JCR del ISI	No
Título de la revista	Verification, Model Checking, and Abstract Interpretation
ISSN	03029743
Factor de impacto JCR	0
Información de impacto
Volumen	2008
DOI	10.1007/978-3-540-78163-9_17
Número de revista	4905
Desde la página	172
Hasta la página	187
Mes	FEBRERO
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• Autor: Mario Méndez-Lojo (U. of Texas)
• Autor: Manuel de Hermenegildo Salinas (UPM)

• Creador: Grupo de Investigación: Computación lógica, Lenguajes, Implementación y Paralelismo (CLIP)
• Departamento: Inteligencia Artificial