G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 9/52 (2006.01) G06F 11/00 (2006.01)
Patent
CA 2459123
A system and method for detecting potential deadlocks during the run-time execution of a multithreaded computer program. Requests for access to shared resources are tracked and evaluated to determine whether a present request could prove cyclical with a previous set of requests. As each request is made, the identity of any previously requested and unreleased resources is recorded in a data element associated with the currently requested resource. Data elements associated with the previously requested and unreleased resources are read to assess whether they identify the currently requested resource in previously executed lock sequences, thereby indicating a potential cycle and, thus, a deadlock. In an embodiment related to locking of mutually exclusive resources, a request is a request to lock the resource, and the resource is released by unlocking.
Dahms John F.a.
Dunk Craig
Research In Motion Limited
Ridout & Maybee Llp
LandOfFree
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