JDK-7016955 : G1: remove the is_zeroed parameter from the HeapRegion constructor
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs21
  • Priority: P5
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2011-02-03
  • Updated: 2013-09-18
  • Resolved: 2012-09-25
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JDK 8 Other
8Fixed hs25Fixed
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Description
The HeapRegion constructor takes an "is_zeroed" parameter that indicates whether the newly-allocated region is already zeroed. This is a hickup from the time when we had the concurrent zero fililng thread which has not been removed (6977804: G1: remove the zero-filling thread). It should have been removed as part of that CR but I just missed that extra parameter. It'd be good to get rid of it. Note that the is_zeroed parameter is propagated through several layers of constructors and initialization methods.

Comments
EVALUATION http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/8fbf05030e24
19-09-2012

EVALUATION See Description.
03-02-2011