Stochastically timed predicate-based communication primitives for autonomic computing

Diego Latella
Michele Loreti
(Università di Firenze)
Mieke Massink
Valerio Senni
(IMT Lucca)

Predicate-based communication allows components of a system to send messages and requests to ensembles of components that are determined at execution time through the evaluation of a predicate, in a multicast fashion. Predicate-based communication can greatly simplify the programming of autonomous and adaptive systems. We present a stochastically timed extension of the Software Component Ensemble Language (SCEL) that was introduced in previous work. Such an extension raises a number of non-trivial design and formal semantics issues with different options as possible solutions at different levels of abstraction. We discuss four of these options, of which two in more detail. We provide a formal semantics definition and an illustration of the use of the language modeling a bike sharing system, together with some preliminary analysis of the system performance.

In Nathalie Bertrand and Luca Bortolussi: Proceedings Twelfth International Workshop on Quantitative Aspects of Programming Languages and Systems (QAPL 2014), Grenoble, France, 12-13 April 2014, Electronic Proceedings in Theoretical Computer Science 154, pp. 1–16.
Published: 6th June 2014.

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