Intensional and extensional characterisation of global progress in the π-calculus

  • Authors:
  • Luca Fossati;Kohei Honda;Nobuko Yoshida

  • Affiliations:
  • Queen Mary University of London, UK, Imperial College London, UK;Queen Mary University of London, UK;Imperial College London, UK

  • Venue:
  • CONCUR'12 Proceedings of the 23rd international conference on Concurrency Theory
  • Year:
  • 2012

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Abstract

We introduce an observational theory of global progress properties such as non-blockingness and wait-freedom based on a linear π-calculus. The theory uniformly captures such properties both extensionally and intensionally, by using fair transition relations and partial failures, which represent stalling activities. A fairness-enriched bisimilarity preserves these properties and is a congruence. The framework is applied to the semantic characterisation and separation results for concurrent data structures including different queue implementations.