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From Synchronous Specifications to Statically-Scheduled Hard Real-Time Implementations

Dumitru Potop-Butucaru 1 Robert de Simone 1 Yves Sorel 1
1 AOSTE - Models and methods of analysis and optimization for systems with real-time and embedding constraints
CRISAM - Inria Sophia Antipolis - Méditerranée , Inria Paris-Rocquencourt, Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
Abstract : Hard real-time embedded systems are often designed as automatic control systems that can include both continuous and discrete parts. The functional specification of such systems is usually done in a conditioned data-flow formalism such as Simulink or Scade. These formalisms are either quasi-synchronous or synchronous, and they go beyond the classical data-flow model by introducing a form of conditional execution allowing the description of hierarchical execution modes. Specific real-time implementation approaches have been proposed for such formalisms, which exploit the hierarchical conditions to improve the generated code. We present one such approach which takes as input data-flow synchronous specifications and uses static scheduling heuristics to automatically produce efficient distributed real-time implementations. We explain how improving the analysis of the hierarchical conditions results in better implementations.
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Submitted on : Monday, June 28, 2010 - 2:48:09 PM
Last modification on : Friday, January 21, 2022 - 3:15:45 AM


  • HAL Id : inria-00495666, version 1



Dumitru Potop-Butucaru, Robert de Simone, Yves Sorel. From Synchronous Specifications to Statically-Scheduled Hard Real-Time Implementations. Sandeep K. Shukla and Jean-Pierre Talpin. Synthesis of Embedded Software: Frameworks and Methodologies for Correctness by Construction, Springer Science+Business Media, LLC 2010, pp.34, 2010, 978-1-4419-6399-4. ⟨inria-00495666⟩



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