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:
Apr. 03, 2012
Filed:
Feb. 22, 2008
Yonghong Song, Palo Alto, CA (US);
Xiangyun Kong, Union City, CA (US);
Spiros Kalogeropulos, Los Gatos, CA (US);
Partha P. Tirumalai, Fremont, CA (US);
Yonghong Song, Palo Alto, CA (US);
Xiangyun Kong, Union City, CA (US);
Spiros Kalogeropulos, Los Gatos, CA (US);
Partha P. Tirumalai, Fremont, CA (US);
Oracle America, Inc., Redwood City, CA (US);
Abstract
A computer program is speculatively parallelized with transactional memory by scoping program variables at compile time, and inserting code into the program at compile time. Determinations of the scoping can be based on whether scalar variables being scoped are involved in inter-loop non-reduction data dependencies, are used outside loops in which they were defined, and at what point in a loop a scalar variable is defined. The inserted code can include instructions for execution at a run time of the program to determine loop boundaries of the program, and issue checkpoint instructions and commit instructions that encompass transaction regions in the program. A transaction region can include an original function of the program and a spin-waiting loop with a non-transactional load, wherein the spin-waiting loop is configured to wait for a previous thread to commit before the current transaction commits.