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Causally Consistent Dynamic Slicing

Authors Roly Perera, Deepak Garg, James Cheney

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Roly Perera
Deepak Garg
James Cheney

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Roly Perera, Deepak Garg, and James Cheney. Causally Consistent Dynamic Slicing. In 27th International Conference on Concurrency Theory (CONCUR 2016). Leibniz International Proceedings in Informatics (LIPIcs), Volume 59, pp. 18:1-18:15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016) https://doi.org/10.4230/LIPIcs.CONCUR.2016.18

Abstract

We offer a lattice-theoretic account of the problem of dynamic slicing for pi-calculus, building on prior work in the sequential setting. For any particular run of a concurrent program, we exhibit a
Galois connection relating forward and backward slices of the initial and terminal configurations. We prove that, up to lattice isomorphism, the same Galois connection arises for any causally
equivalent execution, allowing an efficient concurrent implementation of slicing via a standard interleaving semantics. Our approach has been formalised in the dependently-typed programming language Agda.

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Keywords
  • pi-calculus; dynamic slicing; causal equivalence; Galois connection

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