Cache management system providing improved page latching methodology
US7383389B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 2004 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Jul 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24552
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cache management system providing improved page latching methodology is described. In one embodiment, for example, a method is described for providing access to data in a multi-threaded computing system, the method comprises steps of: providing a cache containing pages of data in memory of the multi-threaded computing system; associating a latch with each page in the cache to regulate access to the page, the latch allowing multiple threads to share access to the page for read operations and a single thread to obtain exclusive access to the page for write operations; in response to a request from a first thread to read a particular page, determining whether the particular page is in the cache without blocking access by other threads to pages in the cache; if the particular page is in the cache, attempting to obtain the latch for purposes of reading the particular page; and allowing the first thread to read the particular page unless a second thread has latched the particular page on an exclusive basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.