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Abstract

Conventional semantics for shared-variable concurrency suffers from the “grain of time” problem, i.e., the necessity of specifying a default level of atomicity. We propose a semantics that avoids any such choice by regarding all interference that is not controlled by explicit critical regions as catastrophic. It is based on three principles:

  • Operations have duration and can overlap one another during execution.

  • If two overlapping operations touch the same location, the meaning of the program execution is “wrong”.

  • If, from a given starting state, execution of a program can give “wrong”, then no other possibilities need be considered.

Keywords

Mutual Exclusion Program Execution Boolean Expression Separation Logic Conventional Semantic 
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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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • John C. Reynolds
    • 1
  1. 1.Carnegie Mellon University and Edinburgh University 

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