Object lock management system with improved local lock managemen

Details Object lock management system with improved local lock managemen Object lock management system with improved local lock managemen

1995-08-31

1997-10-28

Auve, Glenn A.

395608, G06F 1300

Patent

active

056825374

ABSTRACT:
An object lock management system for use in a parallel data processing system where objects are accessible by processing activities on computing nodes within the parallel system. The system includes local lock control elements, where each of the local lock control element coordinates the locking of a predetermined set of objects. In particular, each local lock control element grants locks or queues lock requests in response to lock requests. Lock information is selectively reported to a global deadlock detector which performs deadlock detection. The global deadlock detector instructs the local lock control elements to release selected locks and queued lock requests upon detecting a deadlock. Lock information is reported to the global deadlock detector periodically and only for queued lock requests that have timed-out, whereby message traffic and processing overhead is reduced in the parallel system.

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