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Lookup NU author(s): Dr Joey Coleman, Emeritus Professor Cliff JonesORCiD
Various forms of rely/guarantee conditions have been used to record and reason about interference in ways that provide compositional development methods for concurrent programs. This paper illustrates such a set of rules and proves their soundness. The underlying concurrent language allows fine-grained interleaving and nested concurrency; it is defined by an operational semantics; the proof that the rely/guarantee rules are consistent with that semantics (including termination) is by a structural induction. A key lemma which relates the states which can arise from the extra interference that results from taking a portion of the program out of context makes it possible to do the proofs without having to perform induction over the computation history. This lemma also offers a way to think about expressibility issues around auxiliary variables in rely/guarantee conditions.
Author(s): Coleman JW, Jones CB
Publication type: Report
Publication status: Published
Series Title: School of Computing Science Technical Report Series
Year: 2007
Pages: 31
Print publication date: 01/06/2007
Source Publication Date: June 2007
Report Number: 1029
Institution: School of Computing Science, University of Newcastle upon Tyne
Place Published: Newcastle upon Tyne
URL: http://www.cs.ncl.ac.uk/publications/trs/papers/1029.pdf
