Electrical computers and digital processing systems: memory – Storage accessing and control – Shared memory area
Reexamination Certificate
2005-04-26
2005-04-26
Sparks, Donald (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Shared memory area
C711S104000, C711S105000, C711S152000, C711S154000, C711S161000, C711S162000, C711S163000, C718S100000, C718S102000, C718S104000
Reexamination Certificate
active
06886081
ABSTRACT:
A method for determining an ownership of for a multiple owner lock. The method includes determining potential owners of the lock by inspecting a core file of a computer system or memory of a live system to determine which threads have pointers to the lock. The method includes identifying a stack for the threads with a stack pointer pointing to the current active frame and dividing the stack into active and inactive portions. The stack information is examined for each potential owner of the lock for pointers to the lock. If the thread has a pointer to the lock in the inactive portion of the stack, the thread is removed from the set of potential owners. The method includes retrieving a waiting list for the lock, and any threads on the waiting list are removed from the set of potential owners.
REFERENCES:
patent: 5285528 (1994-02-01), Hart
patent: 5608893 (1997-03-01), Slingwine et al.
patent: 5832484 (1998-11-01), Sankaran et al.
patent: 5987506 (1999-11-01), Carter et al.
patent: 6081665 (2000-06-01), Nilsen et al.
patent: 6105050 (2000-08-01), Govindaraju et al.
patent: 6112222 (2000-08-01), Govindaraju et al.
patent: 6182186 (2001-01-01), Daynes
patent: 6219690 (2001-04-01), Slingwine et al.
patent: 6301676 (2001-10-01), Kumar et al.
patent: 6574654 (2003-06-01), Simmons et al.
patent: 20020078119 (2002-06-01), Brenner et al.
patent: 20030188227 (2003-10-01), Maison et al.
Anderson et al, Dec. 1989, IEEE Transaction on Computers, vol. 38, pp. 1631-1644.
Farrokh Hashem
Hogan & Hartson LLP
Kubida William J.
Lembke Kent A.
Sparks Donald
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