SDL and Layered Systems: Proposed Extensions to SDL to Better Support the Design of Layered Systems

Authors:
Rodolphe Arthaud
Affiliations:
-
Venue:
SDL '01 Proceedings of the 10th International SDL Forum Copenhagen on Meeting UML
Year:
2001

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Abstract

Designing complex systems as stacks of collaborating layers is a common practice in various domains, from operating systems to user interfaces. It proves to be particularly fruitful in the domain of telecom systems and, more generally, in distributed systems. After showing why, today, SDL is not well suited for the design of layered systems, we explore usual techniques available in programming languages. Then, we attempt giving SDL the power of expression necessary to view and manipulate signals at different abstraction levels while preserving the language spirit, staying at design level.