Local reasoning about a copying garbage collector

  • Authors:
  • Lars Birkedal;Noah Torp-Smith;John C. Reynolds

  • Affiliations:
  • The IT University of Copenhagen;The IT University of Copenhagen;Carnegie Mellon University

  • Venue:
  • Proceedings of the 31st ACM SIGPLAN-SIGACT symposium on Principles of programming languages
  • Year:
  • 2004

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Abstract

We present a programming language, model, and logic appropriate for implementing and reasoning about a memory management system. We then state what is meant by correctness of a copying garbage collector, and employ a variant of the novel separation logics [18, 23] to formally specify partial correctness of Cheney's copying garbage collector [8]. Finally, we prove that our implementation of Cheney's algorithm meets its specification, using the logic we have given, and auxiliary variables [19].