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arXiv · 0811.0819

Persistent Queries

Andreas Blass·Yuri Gurevich
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Abstract

We propose a syntax and semantics for interactive abstract state machines to deal with the following situation. A query is issued during a certain step, but the step ends before any reply is received. Later, a reply arrives, and later yet the algorithm makes use of this reply. By a persistent query, we mean a query for which a late reply might be used. Syntactically, our proposal involves issuing, along with a persistent query, a location where a late reply is to be stored. Semantically, it involves only a minor modification of the existing theory of interactive small-step abstract state machines.

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Andreas Blass, Yuri Gurevich. 2008-11-05. Persistent Queries. https://arxiv.org/abs/0811.0819

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