Simple Wait-Free Multireader Registers

  • Authors:
  • Paul M. B. Vitányi

  • Affiliations:
  • -

  • Venue:
  • DISC '02 Proceedings of the 16th International Conference on Distributed Computing
  • Year:
  • 2002

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Abstract

Multireader shared registers are basic objects used as communication medium in asynchronous concurrent computation. We propose a surprisingly simple and natural scheme to obtain several waitfree constructions of bounded 1-writer multireader registers from atomic 1-writer 1-reader registers, that is easier to prove correct than any previous construction. Our main construction is the first symmetric pure timestamp one that is optimal with respect to the worst-case local use of control bits; the other one is optimal with respect to global use of control bits; both are optimal in time.