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
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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
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.