hg: hsx/hotspot-gc/hotspot: 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces

[tony.printezis at oracle.com]

Changeset: 2ace1c4ee8da
Author:    tonyp
Date:      2012-01-10 18:58 -0500
URL:       http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/2ace1c4ee8da

6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
Summary: This change simplifies the interaction between GC and concurrent marking. By disabling survivor spaces during the initial-mark pause we don't need to propagate marks of objects we copy during each GC (since we never need to copy an explicitly marked object).
Reviewed-by: johnc, brutisso

! src/share/vm/gc_implementation/g1/concurrentMark.cpp
! src/share/vm/gc_implementation/g1/concurrentMark.hpp
! src/share/vm/gc_implementation/g1/concurrentMark.inline.hpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
! src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp
! src/share/vm/gc_implementation/g1/g1EvacFailure.hpp
! src/share/vm/gc_implementation/g1/g1OopClosures.hpp
! src/share/vm/gc_implementation/g1/heapRegion.cpp
! src/share/vm/gc_implementation/g1/heapRegion.hpp
! src/share/vm/gc_implementation/g1/heapRegion.inline.hpp
! src/share/vm/gc_implementation/g1/ptrQueue.hpp
! src/share/vm/gc_implementation/g1/satbQueue.cpp
! src/share/vm/gc_implementation/g1/satbQueue.hpp