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Adaptable Processes
{ Wed, 26 Oct 2011, 14h00 }

By: Jorge A. PĂ©rez

In this talk, I will propose the concept of adaptable processes as a way of overcoming the limitations that process calculi have for describing patterns of dynamic process evolution. Such patterns rely on direct ways of controlling the behavior and location of running processes, and so they are at the heart of the adaptation capabilities present in many modern concurrent systems. Adaptable processes have a location and are sensible to actions of dynamic update at runtime. This allows to express a wide range of evolvability patterns for processes. First, I will introduce a core process calculus of adaptable processes. It is defined as an extension of Milner's CCS with constructs for updating located processes at runtime. Then, I will describe two verification problems for adaptable processes: bounded and eventual adaptation. While the former ensures that at most k consecutive errors will arise in future states, the latter ensures that if the system enters into an error state then it will eventually reach a correct state. Finally, I will present some expressiveness and (un)decidability of these two problems in different fragments of the calculus.

Hosted by: Software Systems

Location: DI seminars room

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