Compact garbage collection tables

Details Compact garbage collection tables Compact garbage collection tables

2006-08-01

2006-08-01

Alam, Shahid (Department: 2172)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C707S793000, C707S793000, C707S793000, C709S201000, C709S203000, C709S224000, C717S141000

Reexamination Certificate

active

07085789

ABSTRACT:
A compact set of garbage collection tables takes advantage of the redundancies often inherent in live pointer information: multiple call sites in a call stack often share common live pointer information. A call site table lists call site identifiers associated with call stack locations having pointers to heap-allocated data. An associated indirection table (i.e., a descriptor reference table) provides a reference (e.g., an index or a pointer) into a descriptor table, which stores unique descriptors of the call stack locations of interest. The aggregate memory space used by the three tables (i.e., the call site table, the indirection table, and the descriptor table) is typically less than the memory space used by the monolithic live pointer information table.

REFERENCES:
patent: 5848423 (1998-12-01), Ebrahim et al.
patent: 6185581 (2001-02-01), Garthwaite
patent: 6308319 (2001-10-01), Bush et al.
“Compiler Support for Garbage Collection in a Statically Typed Language” by Amer Diwan, Eliot Moss, Richard Hudson, 10 pages.
“Marmot: an optimizing compiler for Java” by Robert Fitzgerald, Todd B. Knoblock, Erik Ruf, Bjame Steensgaard and David Tardti, 34 pages.

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