BibTeX
@MISC{Nehmer_gracefuldegradation,
author = {Nikolas Nehmer},
title = {Graceful Degradation in the Presence of Exceptions},
year = {}
}
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Abstract
In today’s software development processes, exception handling is mostly considered as an issue of minor impor-tance. Furthermore, explicit and systematic exception han-dling strategies and tool-support for reasoning about excep-tion flow and exception compatibility between components are very rare. Nevertheless exceptions not handled appro-priately can seriously harm a software system – uncaught exceptions for example usually lead to a crash or shutdown of the whole system. In this paper a novel approach to sys-tematic exception handling using appropriate tool-support is presented. Static code analysis is used to detect and iden-tify exception handling related problems. Identifying and isolating affected data structures during runtime is a ma-jor part of this approach. A generic system-mechanism re-stricting error propagation to contain the fault’s impact on the overall system is introduced. The overall objective is to achieve graceful degradation in the presence of exceptions of any kind.
Keyphrases
graceful degradation overall system data structure overall objective static code analysis fault impact software system uncaught exception exception handling appropriate tool-support whole system software development sys-tematic exception nevertheless exception systematic exception han-dling strategy exception compatibility minor impor-tance related problem ma-jor part novel approach excep-tion flow generic system-mechanism re-stricting error propagation
