Author(s): Anderson T, Randell B, Romanovsky A
Abstract: Enclosing a component within a software "wrapper" is a well-established way of adapting components for use in new environments. This paper presents an overview of an experimental evaluation of the use of a wrapper to protectagainst faults arising during the (simulated) operation of a practical and critical system; the specific context is a protective wrapper for an off-the-shelf software component at the heart of the control system of a steam raising boiler. Encouraged by the positive outcomes of this experimentation we seek to position protective wrappers as a basis for structuring the provision of fault tolerance in component-based open systems and networks. The paper addresses some key issues and developments relating wrappers to the provision of dependability in future computing systems.
Keywords: dependability; off-the-shelf components; fault tolerance; protective wrapping
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Professor Tom Anderson
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Professor Brian Randell
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Professor Alexander Romanovsky
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