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Operating system fault tolerance support for real-time embedded applications
Afonso, FranciscoTese de doutoramento em Electrónica Industrial (ramo de conhecimento em Informática Industrial) ; Fault tolerance is a means of achieving high dependability for critical and highavailability systems. Despite the efforts to prevent and remove faults during the development of these systems, the application of fault tolerance is usually required because the hardware may fail during system operation and software ...
Aspect-oriented fault tolerance for real-time embedded systems
Afonso, Francisco; Silva, Carlos A.; Brito, Nuno; Montenegro, Sérgio; Tavares, AdrianoReal-time embedded systems for safety-critical applications have to introduce fault tolerance mechanisms in order to cope with hardware and software errors. Fault tolerance is usually applied by means of redundancy and diversity. Redundant hardware implies the establishment of a distributed system executing a set of fault tolerance strategies by software, and may also employ some form of diversity, by using dif...
Application-level fault tolerance in real-time embedded systems
Afonso, Francisco; Silva, Carlos A.; Tavares, Adriano; Montenegro, SérgioCritical real-time embedded systems need to make use of fault tolerance techniques to cope with operation time errors, either in hardware or software. Fault tolerance is usually applied by means of redundancy and diversity. Redundant hardware implies the establishment of a distributed system executing a set of fault tolerance strategies by software, and may also employ some form of diversity, by using different...
Applying aspects to a real-time embedded operating system
Afonso, Francisco; Silva, Carlos A.; Montenegro, Sérgio; Tavares, AdrianoThe application of aspect-oriented programming (AOP) to the embedded operating system domain is still a very controversial topic, as this area demands high performance and small memory footprint. However, recent studies quantifying aspects overheads in AspectC++ show that the resource cost is very low. Therefore, operating system development may benefit with the modularization of crosscutting concerns and syste...
Implementation of middleware fault tolerance support for real-time embedded app...
Afonso, Francisco; Silva, Carlos A.; Montenegro, Sérgio; Tavares, AdrianoCritical real-time embedded systems need to apply fault tolerance strategies to deal with operation time errors, either in hardware or software. In this paper we present the ongoing work to provide application fault tolerance by means of implementing middleware transparent support over the BOSS embedded operating system. The middleware uses a publishersubscriber protocol and enables the execution of several fau...
Middleware Fault Tolerance Support for the BOSS Embedded Operating System
Afonso, Francisco; Silva, Carlos A.; Montenegro, Sérgio; Tavares, AdrianoCritical embedded systems need a dependable operating system and application. Despite all efforts to prevent and remove faults in system development, residual software faults usually persist. Therefore, critical systems need some sort of fault tolerance to deal with these faults and also with hardware faults at operation time. This work proposes fault-tolerant support mechanisms for the BOSS embedded operating ...
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