JDK-6729594 : par compact - remove unused block table implementation
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs13
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2008-07-24
  • Updated: 2010-04-28
  • Resolved: 2010-04-28
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 6 JDK 7 Other
6u14Fixed 7Fixed hs14Fixed
Related Reports
Relates :  
The parallel compacting collector contains unused code for a "block table" that was an attempt to speed up pointer updates during compaction.  The code no longer works and should be removed.

EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/0166ac265d53

EVALUATION This block table code was never updated when the marking bitmap changed to separate the object start bits from the end bits and is now badly bit-rotted. A new implementation is planned; see 6725714.