Guardians in a generation-based garbage collector

  • Authors:
  • R. Kent Dybvig;Carl Bruggeman;David Eby

  • Affiliations:
  • -;-;-

  • Venue:
  • PLDI '93 Proceedings of the ACM SIGPLAN 1993 conference on Programming language design and implementation
  • Year:
  • 1993

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Abstract

This paper describes a new language feature that allows dynamically allocated objects to be saved from deallocation by an automatic storage management system so that clean-up or other actions can be performed using the data stored within the objects. The program has full control over the timing of clean-up actions, which eliminates several potential problems and often eliminates the need for critical sections in code that interacts with clean-up actions. Our implementation is “generation-friendly” in the sense that the additional overhead within a generation-based garbage collector is proportional to the work already done there, and the overhead within the mutator is proportional to the number of clean-up actions actually performed.