Write-barrier maintenance in a garbage collector
US6931423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2003 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Aug 7, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99956
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An approach is provided for maintaining a write barrier during an assignment operation between a source object and a target object. A source tag is obtained from a first reference to the source object, and a target tag is obtained from a second reference to the target object. The source tag and the target tag are compared, such that if the source tag is in a predetermined relationship with the target tag, then a data structure (e.g., a remember table or exit table) associated with the write barrier is updated in accordance with the assignment operation. In one embodiment, the routine to update the data structure is dispatched from a function table based on a tag value in a header associated with the source object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.