hg: jdk7/hotspot-gc/hotspot: 6819077: G1: first GC thread coming late into the GC.

[john.cuthbertson at sun.com]

Changeset: 6cb8e9df7174
Author:    johnc
Date:      2009-08-04 16:00 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/6cb8e9df7174

6819077: G1: first GC thread coming late into the GC.
Summary: The first worker thread is delayed when entering the GC because it clears the card count table that is used in identifying hot cards. Replace the card count table with a dynamically sized evicting hash table that includes an epoch based counter.
Reviewed-by: iveresov, tonyp

! src/share/vm/gc_implementation/g1/concurrentG1Refine.cpp
! src/share/vm/gc_implementation/g1/concurrentG1Refine.hpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
! src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp
! src/share/vm/gc_implementation/g1/g1RemSet.cpp
! src/share/vm/gc_implementation/g1/g1RemSet.hpp
! src/share/vm/gc_implementation/g1/g1_globals.hpp
! src/share/vm/gc_implementation/includeDB_gc_g1