Adaptive granularity refinement in detecting potential data...

Electrical computers and digital processing systems: memory – Storage accessing and control – Shared memory area

Reexamination Certificate

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Reexamination Certificate

active

11070766

ABSTRACT:
A method and apparatus are provided for detecting data races that overcome the limitations of the prior art. In some embodiments, this is accomplished by detecting a first access to an object, determining whether the first access is associated with a suspicious pattern, automatically refining a pattern detection granularity from the object to a memory location within the object if a determination is made that the first access is associated with the suspicious pattern, and reporting the data race if a second access associated with the suspicious pattern occurs at the memory location after the pattern detection granularity is refined.

REFERENCES:
patent: 2002/0120428 (2002-08-01), Christiaens
patent: 2005/0283781 (2005-12-01), Karp et al.
Mellor-Crummey, J., “On-the-Fly Detection of Data Races for Programs with Nested Fork-Join Parallelism”,Supercomputing, 1991, 24-33.
Savage, S. et al., “Eraser: A Dynamic Data Race Detector for Multithreaded Programs”,ACM Transactions on Computer Systems, Nov. 1997, 15(4), 391-411.
von Praun, C. et al., “Object Race Detection”,OOPSLA, 2001, 70-82.
Yu, Y. et al., “RaceTrack: Race Detection for Managed Code”,Presentation at Microsoft TechFest, Mar. 3-4, 2004, 39 pages.
Nishiyama, H., “Detecting Data Races using Dynamic Escape Analysis based on Read Barrier”,Proceedings of the Third Virtual Machine Research and Technology Symposium, May 6-7, 2004, 13 pages.

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