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:
Sep. 11, 2012
Filed:
Aug. 27, 2007
Peter W. Burka, Ottawa, CA;
Nikola Grcevski, Toronto, CA;
Charles B. Hall, Calgary, CA;
Zhong L. Wang, Markham, CA;
Peter W. Burka, Ottawa, CA;
Nikola Grcevski, Toronto, CA;
Charles B. Hall, Calgary, CA;
Zhong L. Wang, Markham, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for lock reservation using cooperative multithreading is provided. The method includes analyzing code containing async points to support cooperative multithreading. The method also includes identifying a class of code as a candidate for reservation via determining locking properties within the code as a function of locations of async points within the code, and generating reserving code that reserves the shared object when code performing the reservation is considered hot code. The method further includes performing runtime monitoring of reservation performance to detect a contention level for the shared object, and removing the reservation when the runtime monitoring determines that a low level of contention exists. A method for lightweight single reader reserved locks is also provided, including identifying a candidate for reservation containing a read-only locking sequence, conditionally marling the sequence, and generating code using an artificial dependency to control execution order of out-of-line code.