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We show that nondeterminism can be handled in a number of ways, surveying dataflow dialects, process networks, synchronous-reactive models, and discrete-event models. As a consequence, actor programs may exhibit unintended behaviors and are less amenable to rigorous testing.

While actors provide a more disciplined model for concurrency than threads, their interactions, if not constrained, admit nondeterminism. The compilation was defined formally and produces completely deterministic code, which respects the real-time semantics of the original program (period, deadlines, release dates and precedences) as well as its functional semantics (respect of data-dependencies).Īctors have become widespread in programming languages and programming frameworks focused on parallel and distributed computing. Communication is achieved by a tailor-made buffering communication protocol.

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It can be considered as a real-time software architecture language that enables to assemble locally mono-periodic synchronous systems into a globally multi-periodic synchronous system.The language compiler generates synchronized multi-task C code, that is independent of the target OS. The objective of the language is not to replace other synchronous languages but instead to provide a higher layer of abstraction, on top of classic synchronous languages. It adds real-time primitives to enable the programming of multi-periodic systems. It is built upon Synchronous Languages (such as Lustre) and inherits their formal properties. Thesis defines a high-level language for programming real-time embedded control systems.

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