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. 28, 2006
Filed:
Sep. 19, 2002
Marco Heddes, Lawrence, MA (US);
Steven Kenneth Jenkins, Raleigh, NC (US);
Ross Boyd Leavens, Cary, NC (US);
Robert Brian Likovich, Jr., Raleigh, NC (US);
Marco Heddes, Lawrence, MA (US);
Steven Kenneth Jenkins, Raleigh, NC (US);
Ross Boyd Leavens, Cary, NC (US);
Robert Brian Likovich, Jr., Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Processor threads in a multi-processor system can concurrently lock multiple semaphores by providing a lock command which includes the semaphore value and a semaphore number. Each processor is allocated two or more addressable semaphore stores, each of which include a multi-bit field identifying the requested semaphore and a one bit field identifying the locked status of the requested semaphore. The semaphore number determines which of the allocated semaphore stores are to be used for processing the lock command.