US Patent Issued to Apple on May 20 for "Livelock detection and resolution using oldest operation tracking" (California, Maryland Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,256, issued on May 20, was assigned to Apple Inc. (Cupertino, Calif.).

"Livelock detection and resolution using oldest operation tracking" was invented by Deepankar Duggal (Sunnyvale, Calif.), Haoyan Jia (Ellicott, Md.), Mridul Agarwal (Sunnyvale, Calif.), Richard F. Russo (San Jose, Calif.), Debasish Chandra (Sunnyvale, Calif.) and Yanran Yang (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A livelock resolution circuit may be used to detect and remove a livelock from a processor. The livelock resolution circuit may use a counter, whose value may be reset or incremented depending on a status of a retire pointer in a reorder buffer...