hg: hsx/hotspot-gc/hotspot: 7112743: G1: Reduce overhead of marking closure during evacuation pauses

[john.cuthbertson at oracle.com]

Changeset: dc467e8b2c5e
Author:    johnc
Date:      2011-11-17 12:40 -0800
URL:       http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/dc467e8b2c5e

7112743: G1: Reduce overhead of marking closure during evacuation pauses
Summary: Parallelize the serial code that was used to mark objects reachable from survivor objects in the collection set. Some minor improvments in the timers used to track the freeing of the collection set along with some tweaks to PrintGCDetails.
Reviewed-by: tonyp, brutisso

! src/share/vm/gc_implementation/g1/concurrentMark.cpp
! src/share/vm/gc_implementation/g1/concurrentMark.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/g1RemSet.cpp
! src/share/vm/gc_implementation/g1/g1RemSet.hpp
! src/share/vm/gc_implementation/g1/heapRegion.hpp
! src/share/vm/oops/objArrayOop.hpp