Implementação de sistemas tolerantes a falhas usando programação orientada a objetos

Orientador: Cecilia Mary Fischer RubiraDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de ComputaçãoResumo: Este trabalho tem por objetivo desenvolver uma arquitetura orientada a objetos para dar suporte às aplicações tolerantes a falhas de software. Técnicas de orientação a objetos, tais como, abstração de dados, herança, ligação dinâmica e polimorfismo são exploradas, visando obter aplicações de software de melhor confiabilidade e qualidade. Nosso objetivo é prover um suporte para aplicações que requeiram tolerância falhas de software através de técnicas já conhecidas de diversidade de projeto, integrando essas técnicas ao mecanismo de tratamento de exceções criando assim um framework composto por componentes de software genéricos que formam uma infra-estrutura para dar suporte ao desenvolvimento de sistemas tolerantes a falhas distribuídos(FOOD) .Abstract: The major goal of this work is to develop an object-oriented architecture for software fault-tolerant applications. Object-oriented techniques, such as data abstraction, inheritance and polymorphism are explored to improve software reliability and quality. Thus, our goal is to support software fault tolerance using design diversity, so that this support can be incorporated to the exception handling mechanism in the application. For the understanding and validation of these techniques, we have developed a fault-tolerant object-oriented distributed ftamework (FOOD).MestradoMestre em Ciência da Computaçã

An Architectural-level Exception-handling System For Component-based Applications

Component-based software systems built out of reusable software components are being used in a wide range of applications which have high dependability requirements. In order to accomplish the required levels of dependability, it is necessary to incorporate into these complex systems means for to cope with software faults. Exception handling is a well-known technique for adding forward error recovery to software systems supported by various mainstream programming languages. However, exception handling for component-based applications at the architectural level introduces new challenges which are not addressed by traditional exception handling systems, such as unavailability of source code, specially when off-the-shelf components are employed. In this paper, we present an exception handling system which adds fault tolerance to component-based systems at the architectural level. 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