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ACSD
2010
IEEE

A Formal Semantics of Clock Refinement in Imperative Synchronous Languages

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A Formal Semantics of Clock Refinement in Imperative Synchronous Languages
The synchronous model of computation divides the execution of a program into an infinite sequence of socalled macro steps, which are further divided into finitely many micro steps. Since all threads of a program are forced to run in lockstep, programmers have no means to express the independence of parallel threads, which leads to a phenomenon called over-synchronization. In this paper, we therefore propose a generalization of the synchronous model of computation by means of refined clocks, which divide a macro step into finer grained steps that themselves consist of micro steps. In particular, we present a structural operational semantics of subclocks and prove that the internal asynchrony given by subclocks still preserves input/output determinism.
Mike Gemunde, Jens Brandt, Klaus Schneider
Added 10 Feb 2011
Updated 10 Feb 2011
Type Journal
Year 2010
Where ACSD
Authors Mike Gemunde, Jens Brandt, Klaus Schneider
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