hg: jdk7/hotspot-gc/hotspot: 6786503: Overflow list performance can be improved

[y.s.ramakrishna at sun.com]

Changeset: 5cfd8d19e546
Author:    ysr
Date:      2009-01-26 12:47 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/5cfd8d19e546

6786503: Overflow list performance can be improved
Summary: Avoid overflow list walk in CMS & ParNew when it is unnecessary. Fix a couple of correctness issues, including a C-heap leak, in ParNew at the intersection of promotion failure, work queue overflow and object array chunking. Add stress testing option and related assertion checking.
Reviewed-by: jmasa

! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
! src/share/vm/gc_implementation/includeDB_gc_parNew
! src/share/vm/gc_implementation/parNew/parNewGeneration.cpp
! src/share/vm/gc_implementation/parNew/parNewGeneration.hpp
! src/share/vm/memory/referenceProcessor.cpp
! src/share/vm/runtime/globals.hpp