Book section Open Access

Explicit Identifiers and Contexts in Reversible Concurrent Calculus

Aubert, Clément; Medić, Doriana

Existing formalisms for the algebraic specification and representation of networks of reversible agents suffer some shortcomings. Despite multiple attempts, reversible declensions of the Calculus of Communicating Systems (CCS) do not offer satisfactory adaptation of notions usual in "forward-only" process algebras, such as replication or context. Existing formalisms disallow the "hot-plugging" of processes during their execution in contexts with their own past. They also assume the existence of "eternally fresh" keys or identifiers that, if implemented poorly, could result in unnecessary bottlenecks and look-ups involving all the threads. In this paper, we begin investigating those issues, by first designing a process algebra endowed with a mechanism to generate identifiers without the need to consult with the other threads. We use this calculus to recast the possible representations of non-determinism in CCS, and as a by-product establish a simple and straightforward definition of concurrency. Our reversible calculus is then proven to satisfy expected properties. We also observe that none of the reversible bisimulations defined thus far are congruences under our notion of "reversible" contexts.
Files (457.8 kB)
Name Size
explicit-identifiers-and-contexts-in-reversible-concurrent-calculus.pdf
md5:117f9106e6c6e691b5c95e0a2b47f670
457.8 kB Download
90
37
views
downloads
Views 90
Downloads 37
Data volume 16.9 MB
Unique views 82
Unique downloads 36

Share

Cite as