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:
Oct. 28, 2008
Filed:
May. 23, 2003
Emil S. Ochotta, Mountain View, CA (US);
Emil S. Ochotta, Mountain View, CA (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
Method and apparatus for controlling concurrent access to a data file. The data file is organized into a plurality of partitions, and a lock file that is accessible to the client applications is persistently stored. The lock file includes lock objects that correspond to the plurality of partitions, and each lock object indicates a lock status of the corresponding partition. The client applications perform an atomic file system operation on a persistent file system object when exclusive access is sought to the lock file. Successful completion of the atomic file system operation indicates that a client application has exclusive control over the lock file, and the lock file may thereafter be updated, the atomic operation undone, and access made to a selected partition.