Distributed shared data management system for controlling structured shared data and for serializing access to shared data
US5649102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1994 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Nov 25, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A distributed shared memory management system for a distributed shared memory computer system having a plurality of computers interconnected by a network, each computer having an independent address space and logically sharing data physically distributed to a storage of each computer. Each computer running a program for reading/changing the shared data includes a coherence control designation command for designating to enter a mutual exclusion state in which two or more computers cannot change the logically single shared data, a coherence control release command for designating a release of the mutual exclusion state, and a coherence control execution command for reflecting the contents of the shared data changed between the coherence control designation command and the coherence control release command, upon the logically single shared data in another computer. At least one of the plurality of computers includes a request message queue for storing a coherence control request message issued by the coherence control execution command when the coherence control designation command is executed. The coherence control designation command includes data for designating the order of readin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.