Efficiently distributing information used for lock management between distributed resource objects
US6668270B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Nov 14, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99938
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The lock management system disclosed is distributed i.e. information about which locks have been granted for a resource is stored at both a master node and at the nodes on which are located processes that desire access to the resource. A master resource object grants locks to shadow resource objects located on the nodes. Each shadow resource object grants locks on the resource to processes that are located on the same node as the shadow resource object. Data stored in the same node of a shadow resource object indicates what information the shadow resource object has sent to the master object. The information includes what lock mode is held by a shadow resource object and what lock mode is currently desired by the shadow resource lock. The shadow resource object transmits both information and requests to the master resource object based on the data stored in the same node of a shadow resource object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.