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:
Jul. 01, 2014
Filed:
Mar. 28, 2012
Peter Wiebe Burka, Ottawa, CA;
Jeffrey Michael Disher, Ottawa, CA;
Daryl James Maier, Unionville, CA;
Aleksandar Micic, Ottawa, CA;
Ryan Andrew Sciampacone, Nepean, CA;
Peter Wiebe Burka, Ottawa, CA;
Jeffrey Michael Disher, Ottawa, CA;
Daryl James Maier, Unionville, CA;
Aleksandar Micic, Ottawa, CA;
Ryan Andrew Sciampacone, Nepean, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method to implement parallel, single-pass compaction in a garbage collector is described. In one embodiment, such a method includes conducting a planning phase for multiple regions to be compacted. During the planning phase, the method determines new locations for data entities in the multiple regions. The method then performs a move phase for the multiple regions to move the data entities to their new locations. During the move phase, the method initiates multiple compaction threads to move the data entities to their new locations. While executing, the compaction threads dynamically build a dependency graph of the regions being compacted. The dependency graph guarantees that no data entity is moved to its new location until all data entities that it overwrites have been moved to their new locations. A corresponding computer program product and apparatus are also disclosed herein.