Method and system for concurrent garbage collection and...

Details Method and system for concurrent garbage collection and... Method and system for concurrent garbage collection and...

2004-05-18

2008-09-02

Ellis, Kevin (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C707S793000, C711S170000

Reexamination Certificate

active

07421539

ABSTRACT:
A method for concurrent garbage collection and mutator execution in a computer system includes scanning a first cache line for a non-local bit. The non-local bit is associated with a root object. A done bit associated with the first cache line is set. A second cache line to find a first object that is referenced by the root object is located. A mark bit and the done bit associated with the second cache line are set. The first and second cache lines are scanned for unset done bits. If an unset done bit is detected in either the first or the second cache line, then the cache line associated with the unset done bit is rescanned to determine whether there are any modified object references.

REFERENCES:
patent: 5893121 (1999-04-01), Ebrahim et al.
patent: 6021469 (2000-02-01), Tremblay et al.
patent: 6490599 (2002-12-01), Kolodner et al.
patent: 6671707 (2003-12-01), Hudson et al.
patent: WO 01/44947 (2001-06-01), None
The Authoritative Dictionary of IEEE Standards Terms, Seventh Edition, 2000, IEEE Press pp. 273.

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