Access Restriction

Author Afonso, Francisco ♦ Silva, Carlos ♦ Brito, Nuno ♦ Montenegro, Sergio ♦ Tavares, Adriano
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Distributed System ♦ Aspect-oriented Programming ♦ Fault Tolerance Mechanism ♦ Distributed Embedded System Application ♦ Product Line Development ♦ Redundant Hardware ♦ Software Error ♦ Fault Tolerance Strategy ♦ Significant Performance ♦ Fault Tolerant Framework ♦ Memory Footprint Cost ♦ Different Variant ♦ Several Fault Tolerant Configuration ♦ Application Thread Level ♦ Legacy System Evolution ♦ Real-time Embedded System ♦ Safety-critical Application ♦ Fault Tolerance
Description Real-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 different variants or versions for the same processing. This paper describes our approach to introduce fault tolerance in distributed embedded systems applications, using aspect-oriented programming (AOP). A real-time operating system sup-porting middleware thread communication was integrated to a fault tolerant framework. The introduction of fault tolerance in the system is performed by AOP at the application thread level. The advantages of this approach include higher modularization, less efforts for legacy systems evolution and better configurability for testing and product line development. This work has been tested and evaluated successfully in several fault tolerant configurations and presented no significant performance or memory footprint costs.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2008-01-01
Publisher Institution in Proceedings of the 7th Workshop on Aspects, Components and Patterns for Infrastructure Software – ACP4IS