The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2009
Filed:
May. 13, 2005
Christine H. Flood, Westford, MA (US);
David L. Detlefs, Westford, MA (US);
Christine H. Flood, Westford, MA (US);
David L. Detlefs, Westford, MA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
A remembered set for a memory heap region in a garbage-collected computer system is modified to classify reference locations stored therein by the heap region from which the references originate so that the number of references originating from a given region can be easily determined. If the number of remembered set entries for references from a second region to a first region reaches a predetermined threshold, the second region is constrained so that it will be collected at the same time as, or before, the first region. Then, all entries in the remembered set associated with the first region for references from the second region to the first region can be deleted, and no such entries need be entered in the future thereby reducing the size of that remembered set and the time required to scan it.