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:
Jul. 29, 2003
Filed:
Jul. 13, 2000
Curt F. Schimmel, San Ramon, CA (US);
Silicon Graphics, Inc., Mountain View, CA (US);
Abstract
An scalable multi-reader/single-writer lock implementation that eliminates contention for lock data structures that can occur in large symmetric multi-processing (SMP) computer systems. The present invention includes a registry head data structure for each critical resource within the computer system. Linked to each of the registry head data structures are one or more client data structures that represent each client (i.e., process, thread, interrupt handler, and the like) that needs read and/or write access to the critical resource represented by the registry head data structure. Further, five operations—Initialization, Adding a Client, Deleting a Client, Obtaining Read Access, and Obtaining Write Access—are provided in order to achieve the goal of contention elimination.