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:
May. 31, 1994
Filed:
Jul. 29, 1991
Applicant:
Inventor:
Richard R Barton, Lexington, SC (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395650 ; 364D / ; 3642281 ; 3642283 ; 3642468 ; 3642815 ;
Abstract
A method and apparatus for extending a tenure of a process that owns a system process that has shared data or resources and also is requesting the owned system process. The ability to extend the tenure of the owning process allows the nesting of requests to the system process. By properly ordering how the requests are nested, deadlocks may be avoided. Additionally, by extending the tenure of a current process, some unnecessary changes in processor instructions and data may be avoided and processing efficiency increased.