Abstraction for concurrent objects

Ivana Filipovi, Peter O'Hearn, Noam Rinetzky*, Hongseok Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Concurrent data structures are usually designed to satisfy correctness conditions such as sequential consistency or linearizability. In this paper, we consider the following fundamental question: What guarantees are provided by these conditions for client programs? We formally show that these conditions can be characterized in terms of observational refinement. Our study also provides a new understanding of sequential consistency and linearizability in terms of abstraction of dependency between computation steps of client programs.

Original languageEnglish
Pages (from-to)4379-4398
Number of pages20
JournalTheoretical Computer Science
Issue number51-52
StatePublished - 4 Dec 2010
Externally publishedYes


FundersFunder number
Engineering and Physical Sciences Research CouncilEP/D053625/1, EP/E053041/1
Royal Society


    • Linearizability
    • Observational equivalence
    • Observational refinement
    • Sequential consistency


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