A method, apparatus & computer program product for selecting a predictor to minimize exception traps from a top-of-stack cache
CA 2277636 A1 · Owner: Sun Microsystems, Inc. · Inventors: Damron, Peter C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus, methods, and computer program products are disclosed that improve the, operation of a computer that uses a top-of-stack cache by reducing the number of overflow, and underflow traps generated during the execution of a program. An exception history is, maintained that tracks recent occurrences of overflow and underflow exception traps. This, exception history is hashed with the address of the computer instruction that caused the, exception to generate an index into a set of predictors. Thus a predictor is , used that is, responsive to the current exception history of the top-of stack cache.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2021.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.