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Complex computing systems are increasingly self-adaptive, with an autonomic computing approach for their administration. Real systems require the co-existence of multiple autonomic management loops, each complex to design. However their uncoordinated co-existence leads to performance degradation and possibly to inconsistency. There is a need for(More)
We describe the extension of a reactive programming language with a behavioral contract construct. It is dedicated to the programming of reactive control of applications in embedded systems, and involves principles of the supervisory control of discrete event systems. Our contribution is in a language approach where modular discrete controller synthesis(More)
This paper presents an approach for the safe design of data-intensive embedded systems. A multimedia application module of last generation cellular phones is considered as a case study. The OMG standard profile MARTE  is used to adequately model the application. The resulting model is then transformed into a synchronous program from which a(More)
We present a technique for designing reconfiguration controllers in the Fractal component-based framework. We obtain discrete control loops that automatically enforce safety properties on the interactions between components, concerning, e.g., mutual exclusions, forbidden or imposed sequences. We use a reactive programming language, with a new mechanism of(More)
We address the design of distributed systems with synchronous dataflow programming languages. As modular design entails handling both architectural and functional modularity, our first contribution is to extend an existing synchronous dataflow programming language with primitives allowing the description of a distributed architecture and the localization of(More)
We illustrate an approach for the safe design of adaptive embedded systems. It applies the BZR programming language, featuring a special new contract mechanism: its compilation involves automatical discrete controller synthesis. The contribution of this paper is to illustrate how it can be used to enforce the correct adaptation control of the application,(More)
In the context of component-based embedded systems, the management of dynamic reconfiuration in adaptive systems is an increasingly important feature. The Fractal component-based framework, and its industrial instantiation MIND, provide for support for control operations in the lifecycle of components. Nevertheless, the use of complex and integrated(More)
We propose a simple programming language, called Nemo, specific to the domain of multi-task real-time embedded systems, such as in robotic, automotive or avionics systems. It can be used to specify a set of resources with usage constraints, a set of tasks that consume them according to various modes, and applications sequencing the tasks. We obtain(More)