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:
Aug. 03, 2010
Filed:
Jul. 12, 2005
John Rector, Redmond, WA (US);
Jonathan D. Morrison, North Bend, WA (US);
Neill M. Clift, Kirkland, WA (US);
Arun U. Kishan, Bellevue, WA (US);
John Rector, Redmond, WA (US);
Jonathan D. Morrison, North Bend, WA (US);
Neill M. Clift, Kirkland, WA (US);
Arun U. Kishan, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A blocking local sense synchronization barrier is provided. The local sense variable is not processor private or global, but truly local to the synchronization barrier function. Safe deletion is provided by making sure the last operation a thread performs on a barrier is a write. Just before returning, threads increment a field that indicates the count of threads that have left the barrier. Blocking is supported such that threads spin for some interval, and when they decide to block, examine and set (if not already set) the indication of whether a thread is blocking that is to be examined by the last thread to arrive at the barrier to determine whether to set an event to release blocking threads.