Ensuring buffer availability
US7895390B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2004 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Jul 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F5/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A buffer availability manager ensures that buffers are available before processes write thereto. The buffer availability manager maintains a plurality of register sets corresponding to the plurality of buffers. Each register set comprises a status indicator and a generation counter. Prior to writing to a buffer, the corresponding register set is read. Data is written to an individual buffer only if the status indicator indicates that the buffer is not busy, and the current value of the generation counter is not equal to a stored value from a prior register set read. The buffer availability manager detects writing of data to the buffer, and in response updates the status indicator to indicate that the buffer is busy. After processing the data in the buffer, the buffer availability manager updates the status indicator to not busy, and updates the value of the generation counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.