Allocation cache premarking for snap-shot-at-the-beginning concurrent mark-and-sweep collector
US8612493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2008 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Nov 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0269
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Tracking newly created objects during a garbage collection cycle includes marking newly allocated objects in the GC cycle during the allocation cache population phase. The goal is to take a high performance system for tracing live objects, such as the mark map, and combine the SATB with a cached allocation system for heap memory such that SATB representation is preserved. Embodiments combine both efficient support for an SATB model during a collection cycle and a highly optimized allocation path for heap objects in an allocation scheme (which may optionally be a size segregated class allocation scheme) that allows both mechanisms to co-exist effectively. Specifically, embodiments track newly created objects during a GC cycle such that they are kept alive during the trace phase while continuing to support a highly efficient allocating caching strategy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.