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:
Feb. 05, 2013
Filed:
Feb. 13, 2008
John Gregory Favor, Scotts Valley, CA (US);
Paul G. Chan, Oakland, CA (US);
Graham Ricketson Murphy, Sunnyvale, CA (US);
Joseph Byron Rowlands, Santa Clara, CA (US);
John Gregory Favor, Scotts Valley, CA (US);
Paul G. Chan, Oakland, CA (US);
Graham Ricketson Murphy, Sunnyvale, CA (US);
Joseph Byron Rowlands, Santa Clara, CA (US);
Oracle America, Inc., Redwood City, CA (US);
Abstract
An embodiment of the present invention includes a circuit for tracking memory operations with trace-based execution. Each trace includes a sequence of operations that includes zero or more of the memory operations. At least some of the active memory operations access the memory in an execution order that is different from the program order. The circuit includes a first memory that caches data accessed by the memory operations. This memory is partitioned into N banks. Checkpoint entries, which are stored in a second memory also partitioned into N banks, are associated with each trace. Each entry refers to a checkpoint location in the first memory. A sub-circuit receives rollback requests and responds by overwriting checkpoint locations. Each of the N memory units consisting of a bank in the first memory and the corresponding bank in the second memory may be rolled back independently and concurrently with other memory units.