On Synchronous and Asynchronous Compatibility of Communicating Components

Abstract : We study interacting components and their compatibility with respect to synchronous and asynchronous composition. The behavior of components is formalized by I/O-transition systems. Synchronous composition is based on simultaneous execution of shared output and input actions of two components while asynchronous composition uses unbounded FIFO-buffers for message transfer. In both contexts we study compatibility notions based on the idea that any output issued by one component should be accepted as an input by the other. We distinguish between strong and weak versions of compatibility, the latter allowing the execution of internal actions before a message is accepted. We consider open systems and study conditions under which (strong/weak) synchronous compatibility is sufficient and necessary to get (strong/weak) asynchronous compatibility. We show that these conditions characterize half-duplex systems. Then we focus on the verification of weak asynchronous compatibility for possibly non half-duplex systems and provide a decidable criterion that ensures weak asynchronous compatibility.
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Rolf Hennicker, Michel Bidoit, Thanh-Son Dang. On Synchronous and Asynchronous Compatibility of Communicating Components. 18th International Conference on Coordination Languages and Models (COORDINATION), Jun 2016, Heraklion, Greece. pp.138-156, ⟨10.1007/978-3-319-39519-7_9⟩. ⟨hal-01631726⟩

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