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:
Feb. 04, 2014
Filed:
Jan. 29, 2010
Applicant:
Jonathan E. Brassow, Eagan, MN (US);
Inventor:
Jonathan E. Brassow, Eagan, MN (US);
Assignee:
Red Hat, Inc., Raleigh, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An inter-machine locking mechanism coordinates the access of shared resources in a tightly-coupled cluster that includes a number of processing systems. When a requesting processing system acquires a lock to access a resource, a comparison is made between values of a global counter and a local counter. The global counter indicates the number of times the lock is acquired exclusively by any of the processing systems. Based on the comparison result, the requesting processing system determines whether the resource has been modified since the last time it held the lock.