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:
Aug. 02, 2022

Filed:

Nov. 25, 2019
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Sharon Wang, Ottawa, CA;

Daniel Heidinga, Ottawa, CA;

Hang Shao, Ottawa, CA;

Oluwatobi Ajila, Ottawa, CA;

Graham Chapman, Nepean, CA;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/44 (2018.01); G06F 8/33 (2018.01); G06F 9/445 (2018.01); G06F 8/41 (2018.01); G06F 8/30 (2018.01);
U.S. Cl.
CPC ...
G06F 8/33 (2013.01); G06F 8/315 (2013.01); G06F 8/41 (2013.01); G06F 9/44589 (2013.01);
Abstract

A computer-implemented method for bytecode class verification includes: encountering a class requiring verification of its bytecode during a run of an application; determining whether class relationship data for the class exists in a shared classes cache; in response to a determination that the class relationship data for the class does not exist in the shared classes cache: performing a linear bytecode walk of the bytecode to identify relationship data for the class and verify that the bytecode is well-formed; and storing the identified relationship data as the class relationship data for the class in the shared classes cache; in response to a determination that the class relationship data for the class does exist in the shared classes cache: retrieving the class relationship data for the class from the shared classes cache; and processing the class relationship data.


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