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Lookup NU author(s): Emeritus Professor Alexander RomanovskyORCiD
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.
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
