SDL Design Patterns and Components - Watchdog and Heartbeat

C. Webel, I. Fliege

Technical Report 335/04, Department of Computer Science, University of Kaiserslautern, Kaiserslautern, 2004


We present a methodology to augment system safety step-by-step and illustrate the approach by the definition of reusable solutions for the detection of fail-silent nodes - a watchdog and a heartbeat. These solutions can be added to real-time system designs, to protect against certain types of system failures. We use SDL as a system design language for the development of distributed systems, including real-time systems.



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