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:
Nov. 18, 2003
Filed:
Mar. 30, 2000
Robert Brian Hutchison, Raleigh, NC (US);
Stuart Te-Hui Shih, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention utilizes a file locking emulator between an application program and an operating system. The file locking emulator comprises an application program interface and a file lock supervisor. The file locking emulator receives the file locking requests from the application program and generates file requests and file lock query commands. When the application program interface receives a file request it first checks the files lock status and then either returns an error for incompatible file requests or executes the compatible lock request along with any other compatible operation request such as a read, write or truncate file operation. Only code in the file request emulator needs to be rewritten when an application program is ported to different operating systems sharing incompatible but executable processes. In this manner tested code of the application program does not have to be rewritten.