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. 21, 2018

Filed:

Feb. 22, 2016
Applicant:

Oracle International Corporation, Redwood City, CA (US);

Inventors:

Alex Kogan, Needham, MA (US);

Yosef Lev, New York, NY (US);

Assignee:

Oracle International Corporation, Redwood City, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 9/46 (2006.01); G06F 9/50 (2006.01); G06F 9/52 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0604 (2013.01); G06F 3/0629 (2013.01); G06F 9/467 (2013.01); G06F 9/5016 (2013.01); G06F 9/52 (2013.01);
Abstract

Threads using hardware transactions and executing instrumented critical sections that do not perform any writes may complete as long as the thread holding the lock has not yet executed its first write operation. If the thread executing the instrumented critical section performs any writes, or if the thread holding the lock performs any writes during its critical section, the hardware transaction may be aborted. A write flag may be used to determine whether the thread holding the lock performs any writes. The thread holding the lock may set the flag before performing any write operation. The thread executing the hardware transaction may subscribe to that flag and abort the transaction if the flag is set to true, indicating that the thread holding the lock performed a write operation.


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