Download Architectures for Adaptive Software Systems: 5th by Raffaela Mirandola, Ian Gorton, Christine Hofmeister PDF

By Raffaela Mirandola, Ian Gorton, Christine Hofmeister

This publication constitutes the completely refereed court cases of the fifth overseas convention at the caliber of software program Architectures, QoSA 2009, held in East Stroudsbury, PA, united states in June 2009, at the side of the twelfth foreign Symposium on part established software program Engineering (CBSE 2009). The thirteen revised complete papers have been rigorously reviewed and chosen from 33 submissions. The papers are equipped in topical sections on model-driven caliber research, architectural functionality prediction, architectural wisdom, in addition to case stories and adventure stories.

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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.

Gokhale 60 Without optimizations 50 Latency (us) 40 30 With optimizations 20 With optimizations & PAM 10 0 Fig. 6. Standard Deviation in Latency ized in the context of a LwCCM middleware implementation. Naturally to extend it to other middleware platforms requires a careful study of the other platform’s configuration space. The results indicated an improvement of ∼70% in invocation latency between an execution path consisting of four components (the execution path here refers to the invocations from Timer, to GPS, to AirFrame, and finally to NavDisplay components in BasicSP).

In contrast to traditional software development, MDSD with its formalized process allows us to automate the checking for architectural violations. The MDSD process supplies us with: (1) a high-level artifact such as a UML class diagram, (2) a corresponding low-level artifact such as source code classes and (3) a transformation that maps high-level entities to low-level entities. Our solution is based on extending the Software Reflexion Model and tailoring it for the analysis of MDSD projects so we can automate it.

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