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arXiv · 1804.08976

Connectors meet Choreographies

Farhad Arbab·Luís Cruz-Filipe·Sung-Shik Jongmans·Fabrizio Montesi
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Abstract

We present Cho-Reo-graphies (CR), a new language model that unites two powerful programming paradigms for concurrent software based on communicating processes: Choreographic Programming and Exogenous Coordination. In CR, programmers specify the desired communications among processes using a choreography, and define how communications should be concretely animated by connectors given as constraint automata (e.g., synchronous barriers and asynchronous multi-casts). CR is the first choreography calculus where different communication semantics (determined by connectors) can be freely mixed; since connectors are user-defined, CR also supports many communication semantics that were previously unavailable for choreographies. We develop a static analysis that guarantees that a choreography in CR and its user-defined connectors are compatible, define a compiler from choreographies to a process calculus based on connectors, and prove that compatibility guarantees deadlock-freedom of the compiled process implementations.

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Farhad Arbab, Luís Cruz-Filipe, Sung-Shik Jongmans, Fabrizio Montesi. 2018-04-24. Connectors meet Choreographies. https://arxiv.org/abs/1804.08976

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