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. 10, 2012
Filed:
Aug. 13, 2004
Nir N. Shavit, Cambridge, MA (US);
Ori Shalev, Giv'at Shmuel, IL;
Nir N. Shavit, Cambridge, MA (US);
Ori Shalev, Giv'at Shmuel, IL;
Oracle America, Inc., Redwood City, CA (US);
Abstract
A synchronization technique for shared-memory multiprocessor systems involves acquiring exclusive ownership of a requested memory location for a predetermined, limited duration of time. If an 'owning' process is unpredictably delayed, the ownership of the requested memory location expires after the predetermined duration of time, thereby making the memory location accessible to other processes and requiring the previous 'owning' process to retry its operations on the memory location. If the “owning” process completes its operations on the memory location during the predetermination duration of time, the ownership of the memory location by the “owning” process is terminated and the memory location becomes accessible to other processes.