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:
Dec. 11, 2018
Filed:
Mar. 30, 2016
Oracle International Corporation, Redwood City, CA (US);
John Fernando, Austin, TX (US);
Oracle International Corporation, Redwood City, CA (US);
Abstract
Methods and systems for mutual exclusion in a non-coherent memory hierarchy may include a non-coherent memory system with a shared system memory. Multiple processors and a memory connect interface may be configured to provide an interface for the processors to the shared memory. The memory connect interface may include an arbiter for atomic memory operations from the processors. In response to an atomic memory operation, the arbiter may perform an atomic memory operation procedure including setting a busy flag for an address of the atomic memory operation, blocking subsequent memory operations from any of the processors to the address while the busy flag is set, issuing the atomic memory operation to the shared memory, and in response to an acknowledgement of the atomic memory operation from the shared memory, clearing the busy flag and allowing subsequent memory operations from the processors for the address to proceed to the shared memory.