hg: jdk7/hotspot-gc/hotspot: 6668573: CMS: reference processing crash if ParallelCMSThreads > ParallelGCThreads

[y.s.ramakrishna at oracle.com]

Changeset: 92da084fefc9
Author:    ysr
Date:      2011-03-17 10:32 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/92da084fefc9

6668573: CMS: reference processing crash if ParallelCMSThreads > ParallelGCThreads
Summary: Use _max_num_q = max(discovery_degree, processing_degree), and let balance_queues() redistribute from discovery_degree to processing_degree of queues. This should also allow a more dynamic and flexible parallelism policy in the future.
Reviewed-by: jmasa, johnc

! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
! src/share/vm/gc_implementation/g1/concurrentMark.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/parNew/parNewGeneration.cpp
! src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp
! src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.cpp
! src/share/vm/gc_implementation/parallelScavenge/psScavenge.cpp
! src/share/vm/memory/generation.cpp
! src/share/vm/memory/referenceProcessor.cpp
! src/share/vm/memory/referenceProcessor.hpp
! src/share/vm/utilities/workgroup.cpp
! src/share/vm/utilities/workgroup.hpp