Practical Aspects for a Working Compile Time Garbage Collection System for Mercury

  • Authors:
  • Nancy Mazur;Peter Ross;Gerda Janssens;Maurice Bruynooghe

  • Affiliations:
  • -;-;-;-

  • Venue:
  • Proceedings of the 17th International Conference on Logic Programming
  • Year:
  • 2001

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Abstract

Compile-time garbage collection (CTGC) is still a very uncommon feature within compilers. In previous work we have developed a compile-time structure reuse system for Mercury, a logic programming language. This system indicates which datastructures can safely be reused at run-time. As preliminary experiments were promising, we have continued this work and have now a working and well performing near-to-ship CTGC-system built into the Melbourne Mercury Compiler (MMC).In this paper we present the multiple design decisions leading to this system, we report the results of using CTGC for a set of benchmarks, including a real-world program, and finally we discuss further possible improvements. Benchmarks show substantial memory savings and a noticeable reduction in execution time.