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:
Sep. 14, 2021
Filed:
Jan. 10, 2020
Applicant:
Wind River Systems, Inc., Alameda, CA (US);
Inventors:
Kenneth Jonsson, Sollentuna, SE;
Markus Carlstedt, Uppsala, SE;
Assignee:
Wind River Systems, Inc., Alameda, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/52 (2006.01); G06F 9/50 (2006.01); G06F 9/48 (2006.01);
U.S. Cl.
CPC ...
G06F 9/52 (2013.01); G06F 9/4887 (2013.01); G06F 9/505 (2013.01); G06F 9/5038 (2013.01);
Abstract
Described is a two-phase spinlock that controls access to a resource from a plurality of threads. The two-phase spinlock receives requests from threads to acquire the resource, places the threads in a first queue associated with a first phase of the two-phase spinlock, determines whether at least one of a predetermined number of slots in a second phase of the two-phase spinlock is available and when the slots are unavailable, processes an interrupt served by a select one of the threads based on a number of attempts by the selected thread to enter the second phase.