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. 30, 2014
Filed:
Oct. 31, 2006
Blaine D. Gaither, Ft. Collins, CO (US);
Judson E. Veazey, Ft. Collins, CO (US);
Blaine D. Gaither, Ft. Collins, CO (US);
Judson E. Veazey, Ft. Collins, CO (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method for providing a transactional memory is described. A cache coherency protocol is enforced upon a cache memory including cache lines, wherein each line is in one of a modified state, an owned state, an exclusive state, a shared state, and an invalid state. Upon initiation of a transaction accessing at least one of the cache lines, each of the lines is ensured to be either shared or invalid. During the transaction, in response to an external request for any cache line in the modified, owned, or exclusive state, each line in the modified or owned state is invalidated without writing the line to a main memory. Also, each exclusive line is demoted to either the shared or invalid state, and the transaction is aborted.