We elaborate on the theoretical foundation and practical application of the contract-based specification method originally developed in the Integrated Project SPEEDS [11], [9] for two key use cases in embedded systems design. We demonstrate how formal contract-based component specifications for functional, safety, and real-time aspects of components can be expressed using the pattern-based requirement specification language RSL developed in the Artemis Project CESAR, and develop a formal approach for virtual integration testing of composed systems based on such contract-specifications of subsystems. We then present a methodology for multi-criteria architecture evaluation developed in the German Innovation Alliance SPES on Embedded Systems.
Ahstract-A notion of interfaces based on regular languagesfor modelling and verification of real-time scheduling constraints was proposed in [5]. This initial notion considers task sets running on single resources, and simple deadline requirements. We extend the approach to enable support for complex task models running on systems with multiple resources. We show that this extension preserves all properties of the original notion. In addition, this extension gives rise to the application of our interfaces in the design of more complex systems, where components can be spread over distributed architectures.The work is complemented by an initial implementation that performs scheduling analysis for a relevant class of real-time interfaces. It actually constructs an interface for a system model if it satisfies a set of given real-time requirements.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.