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. 05, 2005
Filed:
Oct. 29, 2002
Dale E. Parson, Fleetwood, PA (US);
Dale E. Parson, Fleetwood, PA (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
Incremental reorganization of hash tables includes a copy phase and a clean phase. In the copy phase, used entries from an alternate hash table (AHT) are copied to a current hash table (CHT). During copying, hash table operations are allowed to access both tables. In the clean phase, entries in the AHT are marked as empty, and hash table operations are allowed to access only the CHT. Once all used entries have been copied from the AHT to the CHT, the clean phase begins. Once all entries in the AHT have been marked as empty during the clean phase, the two tables are switched and the copy phase begins. The copying or cleaning occurs with every hash table operation, a number of hash table operations, or a number based on analysis of recent hash table operations. Copying also occurs by avoiding copying of deleted or expired entries in the AHT. The present invention is suited to use in multithreaded real-time systems.