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A Separation Logic for Fictional Sequential Consistency

  • Filip SieczkowskiEmail author
  • Kasper Svendsen
  • Lars Birkedal
  • Jean Pichon-Pharabod
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9032)

Abstract

To improve performance, modern multiprocessors and programming languages typically implement relaxed memory models that do not require all processors/threads to observe memory operations in the same order. To relieve programmers from having to reason directly about these relaxed behaviors, languages often provide efficient synchronization primitives and concurrent data structures with stronger high-level guarantees about memory reorderings. For instance, locks usually ensure that when a thread acquires a lock, it can observe all memory operations of the releasing thread, prior to the release. When used correctly, these synchronization primitives and data structures allow clients to recover a fiction of a sequentially consistent memory model.

In this paper we propose a new proof system, iCAP-TSO, that captures this fiction formally, for a language with a TSO memory model. The logic supports reasoning about libraries that directly exploit the relaxed memory model to achieve maximum efficiency. When these libraries provide sufficient guarantees, the logic hides the underlying complexity and admits standard separation logic rules for reasoning about their more high-level clients.

Keywords

Main Memory Memory Model Operational Semantic Proof System Label Transition System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Filip Sieczkowski
    • 1
    Email author
  • Kasper Svendsen
    • 1
  • Lars Birkedal
    • 1
  • Jean Pichon-Pharabod
    • 2
  1. 1.Aarhus UniversityAarhusDenmark
  2. 2.University of CambridgeCambridgeUK

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