Invention Grant
- Patent Title: Augmented advisory lock mechanism for tightly-coupled clusters
- Patent Title (中): 增强紧密耦合集群的咨询锁定机制
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Application No.: US12697123Application Date: 2010-01-29
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Publication No.: US08645650B2Publication Date: 2014-02-04
- Inventor: Jonathan E. Brassow
- Applicant: Jonathan E. Brassow
- Applicant Address: US NC Raleigh
- Assignee: Red Hat, Inc.
- Current Assignee: Red Hat, Inc.
- Current Assignee Address: US NC Raleigh
- Agency: Lowenstein Standler LLP
- Main IPC: G06F12/00
- IPC: G06F12/00
Abstract:
An inter-machine locking mechanism coordinates the access of shared resources in a tightly-coupled cluster that includes a number of processing systems. When a requesting processing system acquires a lock to access a resource, a comparison is made between values of a global counter and a local counter. The global counter indicates the number of times the lock is acquired exclusively by any of the processing systems. Based on the comparison result, the requesting processing system determines whether the resource has been modified since the last time it held the lock.
Public/Granted literature
- US20110191561A1 AUGMENTED ADVISORY LOCK MECHANISM FOR TIGHTLY-COUPLED CLUSTERS Public/Granted day:2011-08-04
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