System, method and program for managing locks
US7500037B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2007 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Aug 26, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99938
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Managing locks under conditions wherein there is a first shared hold on a lock. There is a first pending request for a first exclusive hold on the lock; the first pending request for said first exclusive hold is made after the first shared hold was granted. There is a second pending request for a second exclusive hold on the lock; the second pending request for the second exclusive hold is made after the first pending request for the first exclusive hold. There is a third pending request for a second shared hold; the third pending request for the second shared hold is made after the second pending request for the second exclusive hold. First program instructions grant one of the pending requests for an exclusive hold in response to the first shared hold being released. Second program instructions grant the third pending request for the second shared hold in response to release of the exclusive hold previously granted in response to the one request for an exclusive hold. Third program instructions grant another of the requests for an exclusive hold in response to the second shared hold being released.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.