Abstract
The snapshot object is an important tool for the construction of wait-free asynchronous algorithms. We relate the snapshot object to the lattice agreement decision problem. It is shown that any algorithm for solving lattice agreement can be used to implement the snapshot object. Several new lattice agreement algorithms are presented. The most efficient is a lattice agreement algorithm (and hence, an implementation of snapshot objects) using O(log2 n) operations on 2-processor Tesl&Set registers, plus a linear number of operations on atomic single-writer multi-reader registers.
Part of the work of the first author was performed while visiting DEC Cambridge Research Laboratory. The first and the third authors are partially supported by B. and G. Greenberg Research Fund (Ottawa) and by Technion V.P.R. funds.
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© 1992 Springer-Verlag Berlin Heidelberg
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Attiya, H., Herlihy, M., Rachman, O. (1992). Efficient atomic snapshots using lattice agreement. In: Segall, A., Zaks, S. (eds) Distributed Algorithms. WDAG 1992. Lecture Notes in Computer Science, vol 647. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-56188-9_3
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DOI: https://doi.org/10.1007/3-540-56188-9_3
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