Unifying Theories of Mobile Channels

Gerard Ekembe Ngondi

In this paper we present the denotational semantics for channel mobility in the Unifying Theories of Programming (UTP) semantics framework. The basis for the model is the UTP theory of reactive processes (precisely, the UTP semantics for Communicating Sequential Processes (CSP)), which is slightly extended to allow the mobility of channels: the set of actions in which a process is authorised to participate, originally static or constant (set during the process's definition), is now made dynamic or variable: it can change during the process's execution. A channel is thus moved around by communicating it via other channels and then allowing the receiving process to extend its alphabet with the received channel. New healthiness conditions are stated to ensure an appropriate use of mobile channels.

In John Derrick, Eerke Boiten and Steve Reeves: Proceedings 17th International Workshop on Refinement (Refine'15), Oslo, Norway, 22nd June 2015, Electronic Proceedings in Theoretical Computer Science 209, pp. 24–39.
Published: 4th June 2016.

ArXived at: http://dx.doi.org/10.4204/EPTCS.209.3 bibtex PDF
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