Optimized distributed implementation of multiparty interactions with Restriction

International audienceUsing high level coordination primitives allows enhanced expressiveness of component-based frameworks to cope with the inherent complexity of present-day systems designs. Nonetheless, their distributed implementation raises multiple issues, regarding both the correctness and the runtime performance of the final implementation. We propose a novel approach for distributed implementation of multiparty interactions subject to scheduling constraints expressed by priorities. We rely on new composition operators and semantics that combine multiparty interactions with Restriction. We show that this model provides a natural encoding for priorities. We provide a knowledge-based optimization that modifies the Restriction operator to avoid superfluous communication in the final implementation. We complete our framework through an enhanced conflict resolution protocol that natively implements Restriction. A prototype implementation allows us to compare performances of different optimizations