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A new type system for deadlock-free processes. (English) Zbl 1151.68537
Baier, Christel (ed.) et al., CONCUR 2006 – concurrency theory. 17th international conference, CONCUR 2006, Bonn, Germany, August 27–30, 2006. Proceedings. Berlin: Springer (ISBN 978-3-540-37376-6/pbk). Lecture Notes in Computer Science 4137, 233-247 (2006).
Summary: We extend a previous type system for the $$\pi$$-calculus that guarantees deadlock-freedom. The previous type systems for deadlock-freedom either lacked a reasonable type inference algorithm or were not strong enough to ensure deadlock-freedom of processes using recursion. Although the extension is fairly simple, the new type system admits type inference and is much more expressive than the previous type systems that admit type inference. In fact, we show that the simply-typed $$\lambda$$-calculus with recursion can be encoded into the deadlock-free fragment of our typed $$\pi$$-calculus. To enable analysis of realistic programs, we also present an extension of the type system to handle recursive data structures like lists. Both extensions have already been incorporated into the recent release of TyPiCal, a type-based analyzer for the $$\pi$$-calculus.
For the entire collection see [Zbl 1114.68001].

##### MSC:
 68Q85 Models and methods for concurrent and distributed computing (process algebras, bisimulation, transition nets, etc.)
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