JDK-8040978 : Investigate fast-path for scanning objects during marking and refinement
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 9
  • Priority: P4
  • Status: Closed
  • Resolution: Duplicate
  • Submitted: 2014-04-18
  • Updated: 2025-08-22
  • Resolved: 2025-08-22
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Other
tbdResolved
Related Reports
Duplicate :  
JDK-8069367 - Eagerly reclaimed humongous objects left on mark stack
Relates :  
JDK-8027761 - Investigate fast-path for scanning only objects with references during gc
Relates :  
JDK-8253236 - [REDO] Investigate fast-path for scanning only objects with references during gc
Description
In JDK-8027761 some check has been added that does not scan objects for references that clearly do not have any.

Look if the same idea can be applied to marking or refinement.

Split this CR as required.
Comments
Actually this is necessary so that eager reclaim for humongous objects works (in our implementation).
22-08-2025