Download Architectures for Adaptive Software Systems: 5th by Guillaume Waignier, Anne-Françoise Le Meur, Laurence Duchien PDF

By Guillaume Waignier, Anne-Françoise Le Meur, Laurence Duchien (auth.), Raffaela Mirandola, Ian Gorton, Christine Hofmeister (eds.)

ISBN-10: 3642023509

ISBN-13: 9783642023507

ISBN-10: 3642023517

ISBN-13: 9783642023514

Much of a software program architect’s existence is spent designing software program structures to satisfy a collection of caliber requisites. common software program caliber attributes comprise scalability, protection, functionality or reliability. caliber characteristic specifications are a part of an application’s non-functional standards, which trap the various features of ways the useful - quirements of an program are completed. knowing, modeling and regularly comparing caliber attributes all through a undertaking lifecycle are all complicated engineering initiatives whichcontinuetochallengethe softwareengineeringscienti ccommunity. whereas we look for superior methods, equipment, formalisms and instruments which are usable in perform and will scale to giant structures, the complexity of the purposes that the so- ware is challenged to construct is ever expanding. hence, as a examine group, there's little chance for us to relaxation on our laurels, as our concepts that deal with new features of procedure complexity needs to be deployed and verified. To this finish the fifth overseas convention at the caliber of software program Archit- tures (QoSA) 2009 excited about architectures for adaptive software program structures. sleek software program platforms needs to frequently recon guretheir constitution and behaviour to reply to c- tinuous adjustments in necessities and of their execution atmosphere. In those settings, caliber types are valuable at an architectural point to lead systematic model-driven software program improvement techniques by means of comparing the effect of competing architectural choices.

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Extra info for Architectures for Adaptive Software Systems: 5th International Conference on the Quality of Software Architectures, QoSA 2009, East Stroudsburg, PA, USA, June 24-26, 2009 Proceedings

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214–221. IEEE Computer Society, Los Alamitos (2004) 22. : Architectural Support for Quality of Service for CORBA Objects. Theory and Practice of Object Systems 3(1), 1–20 (1997) 23. : Middleware Scheduling Optimization Techniques for Distributed Real-time and Embedded Systems. In: Proceedings of the 7th Workshop on Object-oriented Real-time Dependable Systems, San Diego, CA. IEEE, Los Alamitos (2002) Applying Model Transformations to Optimizing Real-Time QoS Configurations 35 24. : ControlWare: A Middleware Architecture for Feedback Control of Software Performance.

The metamodel defines the following elements corresponding to several LwCCM real-time configuration mechanisms: • Lane, which is a logical set of threads each one of which runs at lane_priority priority level. , those threads that are created and destroyed as required) using Lane element. • ThreadPool, which controls various settings of Lane elements, or a group thereof. These settings include stacksize of threads, whether borrowing of threads across two Lane elements is allowed, and maximum resources assigned to the buffer requests that cannot be immediately serviced.

Both models are graphs with nodes representing program entities and edges representing relations between them. To link the two models, the analyst manually maps low-level entities to their corresponding high-level entities. The mapping connects the two graphs to a single reflexion graph. Relational algebra is used to specify inconsistency rules between the high-level and the low-level model. The software reflexion model has been successfully used to perform design conformance tests [16]. A semi-automated approach has been proposed which uses clustering techniques (see below) to support the user in the mapping activity [4,3].

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