The LSV seminar takes place on Tuesday at 11:00 AM. The usual location is the conference room at Pavillon des Jardins (venue). If you wish to be informed by e-mail about upcoming seminars, please contact Stéphane Le Roux and Matthias Fuegger.
The seminar is open to public and does not require any form of registration.
We introduce a visual notation for local specification of concurrent
components based on message sequence charts (MSCs). Each component is a
finite-state machine whose actions are MSCs that specify its local view of the
overall communication in the system. These local MSCs are composed into
coherent global scenarios using a separately specified set of transactions.
Intuitively, each MSC represents a phase of interaction. We introduce a mechanism to overlap phases that allows complex interactions to be specified without obscuring the logical structure of the constituent scenarios.
Our notation combines the global view available in models such as high-level message sequence charts (HMSCs) with the local, asynchronous structure captured by message-passing automata (MPA). In fact, both HMSCs and MPAs can be captured as special cases of our formalism.
In this talk we focus on the syntax and formal semantics of our notation, with examples that illustrate why this approach is more natural for capturing real-life specifications. We also describe an approach to use automated tools to analyze systems specified using our notation.
This is joint work with Prakash Chandrasekaran.