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Compact list representation: definition, garbage collection, and system implementation

Published:01 September 1969Publication History
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Abstract

Compact lists are stored sequentially in memory, rather than chained with pointers. Since this is not always convenient, the Swym system permits a list to be chained, compact, or any combination of the two. A description is given of that list representation and the operators implemented (most are similar to those of LISP 1.5). The system garbage collector attempts to make all lists compact; it relocates and rearranges all of list storage using temporary storage. This unique list-compacting garbage collection algorithm is presented in detail. Several classes of the macros used to implement the system are described. Finally, consideration is given to those design factors essential to the success of a plex processing system implementation.

References

  1. 1 GRAY, J. C. Compound data structure for computer aided design; a survey. Proc. ACM 22nd. Nat. Conf. 1967, Thompson Book Co., Washington, D. C., pp. 355-365. Google ScholarGoogle ScholarDigital LibraryDigital Library
  2. 2 HANSEN, W. J. The impact of storage management on the implementation of plex processing languages. Tech. Rep. No. 113, Computer Science Dep., Stanford U., Stanford, Calif., 1969. Google ScholarGoogle ScholarDigital LibraryDigital Library
  3. 3 KNUTH, D. E. The Art of Computer Programming, Vol. 1, Addison-Wesley, Menlo Park, Calif., 1968. Google ScholarGoogle ScholarDigital LibraryDigital Library
  4. 4 LANG, C. A., AND GRAY, J. C. ASP-A ring implemented associative structure package. Comm. ACM 11, 8 (Aug. 1968), 550-555. Google ScholarGoogle ScholarDigital LibraryDigital Library
  5. 5 MCCARTHY, J., ET AL. LISP 1.5 Programmer's Manual. MIT Press, Cambridge, Mass., 1962. Google ScholarGoogle ScholarDigital LibraryDigital Library
  6. 6 MINSKY, M. L. A LISP garbage collector using serial secondary storage. MIT Artificial Intelligence Memo. No. 58, MIT, Cambridge, Mass., Oct. 1963. Google ScholarGoogle ScholarDigital LibraryDigital Library
  7. 7 Ross, D.T. A generalized technique for symbol manipulation and numerical calculation. Comm. ACM 5, 3 (Mar. 1961), 147-150. Google ScholarGoogle ScholarDigital LibraryDigital Library
  8. 8 The AED free storage package. Comm. ACM 10, 8 (Aug. 1967), 481-492. Google ScholarGoogle ScholarDigital LibraryDigital Library
  9. 9 REYNOLDS, J. C. Cogent programming manual. Argonne Nat. Lab. Rep. No. ANL-7022, Argonne, Illinois, Mar. 1965.Google ScholarGoogle Scholar
  10. 10 SCHORR, H., AND WAITE, W.M. An efficient machine-independent procedure for garbage collection in various list structures. Comm. ACM 10, 8 (Aug. 1967), 501-506. Google ScholarGoogle ScholarDigital LibraryDigital Library
  11. 11 STYGAR, P. LISP 2 garbage collector specifications. TM- 3417/500/00, System Development Corp., Santa Monica, Calif., Apr. 1967.Google ScholarGoogle Scholar
  12. 12 WISEMAN, N. E. A simple list processing package for the PDP-7. In DECUS Second European Seminar, Aachen, Germany, Oct. 1966, pp. 37-42.Google ScholarGoogle Scholar

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  1. Compact list representation: definition, garbage collection, and system implementation

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