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Towards Races in Linear Logic
Journal article   Peer reviewed

Towards Races in Linear Logic

Wen Kokke, J. Garrett Morris and Philip Wadler
Logical methods in computer science, Vol.16(4), pp.1-16
09/29/2019
DOI: 10.23638/LMCS-16(4:15)2020

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Abstract

Logical Methods in Computer Science, Volume 16, Issue 4 (December 15, 2020) lmcs:6979 Process calculi based in logic, such as $\pi$DILL and CP, provide a foundation for deadlock-free concurrent programming, but exclude non-determinism and races. HCP is a reformulation of CP which addresses a fundamental shortcoming: the fundamental operator for parallel composition from the $\pi$-calculus does not correspond to any rule of linear logic, and therefore not to any term construct in CP. We introduce non-deterministic HCP, which extends HCP with a novel account of non-determinism. Our approach draws on bounded linear logic to provide a strongly-typed account of standard process calculus expressions of non-determinism. We show that our extension is expressive enough to capture many uses of non-determinism in untyped calculi, such as non-deterministic choice, while preserving HCP's meta-theoretic properties, including deadlock freedom.
Computer Science - Logic in Computer Science

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