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. 26, 2019
Filed:
Dec. 11, 2015
International Business Machines Corporation, Armonk, NY (US);
Elli Androulaki, Zurich, CH;
Robert B. Basham, Aloha, OR (US);
Martin Petermann, Zurich, CH;
Harold J. Roberson, II, Rochester, MN (US);
Alessandro Sorniotti, Zurich, CH;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multi-tiered file locking service provides file locking at the thread and process level, and can optionally include locking at the file system level. A local locking mechanism maintains a list of local locks for threads within a process. When a thread requests a lock for a file, and a local lock is obtained, a process lock for the file may be requested. When no file system locking is used, when the process lock is obtained, the thread receives the lock for the file. When file system locking is used, when the process lock is obtained, a file system lock for the file may be requested. When the file system lock for the file is obtained, the thread receives the lock for the file. The result is a file locking service that functions across threads, processes and nodes in a distributed computing environment.