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Object-Oriented Approach to State Restoration by Reversion in Fault Tolerant Systems

Lookup NU author(s): Professor Alexander Romanovsky

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Abstract

This paper describes an approach to providing object state restoration in fault tolerant (FT) object-oriented (OO) computing systems by means of a reversion strategy. The unit of reversion is an object method. Two primitives are introduced that are used for creating a reverse-recoverable (RR) object: state saving primitive save and state restoring primitive restore. Reverse operations are processed in the order specified by a third primitive, undo. It is demonstrated how the approach suggested can be generalised to build a hierarchy of RR objects in the case of inheritance. The implementation of the approach is described for both the entire system and a separate object. The requirements for reverse operations are analysed. Finally, preferable areas of reversion applicability are discussed.


Publication metadata

Author(s): Tikhomirova NV, Shturtz IV, Romanovsky A

Publication type: Report

Publication status: Published

Series Title: Department of Computing Science Technical Report Series

Year: 1997

Pages: 18

Report Number: 571

Institution: Department of Computing Science, University of Newcastle upon Tyne

Place Published: Newcastle upon Tyne

URL: http://www.cs.ncl.ac.uk/publications/trs/papers/571.pdf


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