Download From MDD Concepts to Experiments and Illustrations by Jean-Philippe Babau, Jöel Champeau, Sébastien Gérard PDF

By Jean-Philippe Babau, Jöel Champeau, Sébastien Gérard

Within the context of disbursed and Real-time Embedded platforms (DRES), process builders are confronted with lowering process improvement price and time whereas constructing right (relating to secure and QoS houses) and more and more complicated structures. To absorb this problem, version pushed improvement (MDD) advocates the in depth use of types and version ameliorations on a number of degrees of abstraction.

This publication comprises contributions from educational specialists on more than a few subject matters with regards to MDD practices, equipment and rising applied sciences. After introducing normal thoughts approximately modeling and the way to enforce version variations, shows supply an outline of the MARTE profile. assurance is then given to the most typical elements of MDD for DRES: structuring architectures utilizing parts, designing structure, overview and validation via assessments and function research. eventually, suggestions is given as to how and why MDD can be utilized by featuring a device to aid MDD and describing an business software of MDD suggestions.

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Description of the Target Model LQN was developed as an extension of the well-known Queueing Network model [ROL 95] [WOO 95]. 10). The software entities also known as tasks are drawn as parallelograms, and the hardware devices as circles. Each kind of service offered by a LQN task is modeled as a so-called entry, drawn as a smaller parallelogram. Every entry may be decomposed in two sequential phases of service: during phase1 the client is blocked waiting for the server’s reply, which is sent at the end of the phase.

For instance, PAdemand ={’assm’, ‘mean’, $md1, ‘ms’} means that the step needs to execute in average $md1 miliseconds, and that this is an assumed demand (as opposed to measured). The tagged value PArep = $r gives the average number of loop repetitions. 3. 2. Description of the Target Model LQN was developed as an extension of the well-known Queueing Network model [ROL 95] [WOO 95]. 10). The software entities also known as tasks are drawn as parallelograms, and the hardware devices as circles. Each kind of service offered by a LQN task is modeled as a so-called entry, drawn as a smaller parallelogram.

44 From MDD concepts to experiments and illustrations – so-called “heavyweight” extensions. Consequently, the job consisted of defining a standard way of using these capabilities to represent concepts and practices from the real-time and embedded domain. Hence, this specification of a UML™ profile adds capabilities on the one hand for modeling Real Time and Embedded Systems (RTES), and on the other hand for analyzing schedulability and performance properties of UML specifications. This new profile is intended to replace the existing UML Profile for Schedulability, Performance and Time [OMG 05b].

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