Extending the Standard Execution Model of UML for Real-Time Systems

Abstract : The ongoing OMG standard on the "Semantics of a Foundational Subset for Executable UML Models" identifies a subset of UML (called fUML, for Foundational UML), for which it defines a general-purpose execution model. This execution model therefore captures an executable semantics for fUML, providing an unambiguous basis for various kinds of model-based exploitations (model transformation, code generation, analysis, simulation, debugging etc.). This kind of facility is of great interest for the domain of real time systems, where analysis of system behavior is very sensible. One may therefore wonder if the general-purpose execution model of fUML can be used to reflect execution semantics concerns of real-time systems (e.g., concurrency, synchronization, and scheduling.). It would practically mean that it is possible to leverage on this precise semantic foundation (and all the work that its definition implied) to capture the precise execution semantics of real-time systems. In this paper, we show that this approach is not directly feasible, because of the way concurrency and asynchronous communications are actually handled in the fUML execution model. However, we show that introducing support for these aspects is technically feasible and reasonable in terms of effort and we propose lightweight modifications of the Execution model to illustrate our purpose.
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Mike Hinchey; Bernd Kleinjohann; Lisa Kleinjohann; Peter A. Lindsay; Franz J. Rammig; Jon Timmis; Marilyn Wolf. 7th IFIP TC 10 Working Conference on Distributed, Parallel and Biologically Inspired Systems (DIPES) / 3rd IFIP TC 10 International Conference on Biologically-Inspired Collaborative Computing (BICC) / Held as Part of World Computer Congress (WCC) , Sep 2010, Brisbane, Australia. Springer, IFIP Advances in Information and Communication Technology, AICT-329, pp.43-54, 2010, Distributed, Parallel and Biologically Inspired Systems. 〈10.1007/978-3-642-15234-4_6〉
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Abderraouf Benyahia, Arnaud Cuccuru, Safouan Taha, François Terrier, Frédéric Boulanger, et al.. Extending the Standard Execution Model of UML for Real-Time Systems. Mike Hinchey; Bernd Kleinjohann; Lisa Kleinjohann; Peter A. Lindsay; Franz J. Rammig; Jon Timmis; Marilyn Wolf. 7th IFIP TC 10 Working Conference on Distributed, Parallel and Biologically Inspired Systems (DIPES) / 3rd IFIP TC 10 International Conference on Biologically-Inspired Collaborative Computing (BICC) / Held as Part of World Computer Congress (WCC) , Sep 2010, Brisbane, Australia. Springer, IFIP Advances in Information and Communication Technology, AICT-329, pp.43-54, 2010, Distributed, Parallel and Biologically Inspired Systems. 〈10.1007/978-3-642-15234-4_6〉. 〈hal-01054487〉

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