Synchronizing commands for preventing data corruption
US8321635B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | May 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2209/521
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for synchronizing input/output commands is provided. An incoming command mask representing an incoming input/output command associated with a memory region is created. In response to a determination that a pending input/output command associated with the memory region is pending, a bitwise inversion operation is performed on the incoming command mask to form a modified incoming command mask. A bitwise AND operation is performed on the modified incoming command mask and the pending command mask to form a pending command locking mask associated with the pending input/output command. A bitwise OR operation is performed between an existing memory lock for a same type of commands and incoming command bit mask to form a new memory region lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.