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.

Date of Patent:
Dec. 29, 2015

Filed:

Mar. 03, 2014
Applicant:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Inventor:

Hiroyuki Usui, Pittsburgh, PA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/44 (2006.01); G06F 11/36 (2006.01); G06F 12/08 (2006.01); G06F 11/22 (2006.01);
U.S. Cl.
CPC ...
G06F 11/362 (2013.01); G06F 11/2236 (2013.01); G06F 11/3688 (2013.01); G06F 12/084 (2013.01); G06F 12/0864 (2013.01); G06F 2212/6032 (2013.04);
Abstract

An information processing apparatus includes a system memory, a cache system that includes a cache memory, and a plurality of cores, each of which accesses the system memory and the cache memory. The cache system stores in a cache line of the cache memory a break indicator that designates one or more of the plurality of cores. The cache system determine whether a first core in the plurality of cores that issues a request to read data from an address that corresponds to the cache line in which the break indicator is stored matches one of the cores designated by the break indicator. If the first core matches one of the cores designated by the break indicator, the cache system returns a break command to the first core. If the first core does not match one of the cores designated by the break indicator, the cache system returns the data to the first core.


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