Aspect-oriented approach for the improvement of the reliability and time performance of a fault-tolerant system

the principle of separation of concerns is a basis element in the software engineering and allows for the division of properties, becoming smaller each time, so as to master their complexity, from the design phase to achievement phase. This paper proposes the probabilistic assessment of critical fault-tolerant programmed systems to improve reliability and availability of an embedded system. In addition, to improve their response time, we use separation of concerns approach, functional (behavior) and non-functional (control). This phase will be achieved by developing a simulator based on aspect-oriented programming (AspectJ). The main objective is to show the impact of this separation on the response time when a hardware architecture of a processor executes instructions and routines of a software application correctly. The probabilistic assessment is based on the failure rate of software instructions executed on hardware architecture of a stack processor whose choice will be justified. The failures considered in this work are the basis of a study of decomposition and refinement carried out by the NFR Framework. As a result, this work has treated the issue of hardware / software interaction in programmed critical systems and the improvement of execution time. [PUBLICATION ABSTRACT]