Resources Negotiation in Systems of Mobile Components

Ferrari, Gianluigi and Tuosto, Emilio (2004) Resources Negotiation in Systems of Mobile Components. Technical Report del Dipartimento di Informatica . Università di Pisa, Pisa, IT.

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Abstract

We introduce a process calculus that contains constructs to express and program resource negotiations in systems of mobile processes. The calculus proposed is an extension of Distributed $\pi$-calculus~ \cite{HR98} and, therefore, it provides process mobility in networks that may dynamically change their topology. Negotiation takes place between processes, asking credits to achieve their purposes, and locations, that release credits depending on their availability. We describe a type system for the calculus which guarantees that well-typed processes cannot fail because of misuse of credits over resources. The safety result is more involved due to process mobility: A migrating process should not access locations that do not guarantee safety.

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