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:
Jul. 15, 2014
Filed:
Oct. 14, 2011
Derek B. Inglis, Ontario, CA;
Kiyokuni Kawachiya, Kanagawa, JP;
Tamiya Onodera, Kanagawa, JP;
Michiaki Tatsubori, Kanagawa, JP;
Derek B. Inglis, Ontario, CA;
Kiyokuni Kawachiya, Kanagawa, JP;
Tamiya Onodera, Kanagawa, JP;
Michiaki Tatsubori, Kanagawa, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A technique for comprehensively acquiring calling-context information at a low cost. Call site IDs are held for each thread as a call history and used as context information. At the time of calling a method, the call history existing in a current frame is shifted left, and stacked in a new frame, with the call site ID of the call site put in the lower bits. At the time of returning from the method, the value of the original call history is returned by returning the frame. At the time of performing a virtual call, call history information is recorded into a call position profile table used to identify a method to be inlined at the time of performing JIT compiling, in addition to determined jump destination information and the number of calls.