Splash tables: an efficient hash scheme for processors
US7424591B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2006 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Feb 27, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0897
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method, data processing system, and computer usable program code are provided for storing data items in a computer. A plurality of hash functions of data values in a data item are computed. A corresponding memory location is determined for one of the plurality of hash functions. The data item and a key portion and a payload portion of all data items are stored contiguously within the memory location.Also provided for are retrieving data items in a computer. A plurality of hash functions of data values in a probe key are computed. A corresponding memory location is determined for each of the plurality of hash functions. Data items in each memory location are examined to determine a match with the probe key. Responsive to a match, a payload of the matching stored data item is returned. All of the steps are performed free of conditional branch instructions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.