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Erschienen in:
2011 | OriginalPaper | Buchkapitel
A Deterministic Interpreter Simulating a Distributed Real Time System Using VDM
verfasst von : Kenneth Lausdahl, Peter Gorm Larsen, Nick Battle
Erschienen in: Formal Methods and Software Engineering
Verlag: Springer Berlin Heidelberg
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The real time dialect of VDM, called VDM-RT, contains constructs for describing concurrent threads, synchronisation of such threads and the distribution of object instances and their threads over multiple CPUs with busses connecting them. Tools that simulate an executable subset of VDM-RT models benefit from being deterministic so that problems are reproducible and can be more easily investigated. We describe the deterministic scheduling features of our VDM-RT interpreter, and show how multi-threaded models can also be debugged deterministically.