hg: jdk7/hotspot-gc/hotspot: 6912621: iCMS: Error: assert(_markBitMap.isMarked(addr + 1), "Missing Printezis bit?")

y.s.ramakrishna at oracle.com y.s.ramakrishna at oracle.com
Tue Feb 8 11:43:14 UTC 2011

Changeset: c5a923563727
Author:    ysr
Date:      2011-02-07 22:19 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/c5a923563727

6912621: iCMS: Error: assert(_markBitMap.isMarked(addr + 1),"Missing Printezis bit?")
Summary: Fix block_size_if_printezis_bits() so it does not expect the bits, only uses them when available. Fix block_size_no_stall() so it does not stall when the bits are missing such cases, letting the caller deal with zero size returns. Constant pool cache oops do not need to be unparsable or conc_unsafe after their klass pointer is installed. Some cosmetic clean-ups and some assertion checking for conc-usafety which, in the presence of class file redefinition, has no a-priori time boundedness, so all GCs must be able to safely deal with putatively conc-unsafe objects in a stop-world pause.
Reviewed-by: jmasa, johnc

! src/share/vm/classfile/classFileParser.cpp
! src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp
! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp
! src/share/vm/gc_interface/collectedHeap.cpp
! src/share/vm/interpreter/rewriter.cpp
! src/share/vm/memory/oopFactory.cpp
! src/share/vm/memory/oopFactory.hpp
! src/share/vm/oops/constantPoolKlass.cpp
! src/share/vm/oops/cpCacheKlass.cpp
! src/share/vm/oops/cpCacheKlass.hpp
! src/share/vm/oops/cpCacheOop.hpp
! src/share/vm/oops/methodOop.cpp
! src/share/vm/oops/methodOop.hpp
! src/share/vm/oops/oop.hpp
! src/share/vm/prims/jvmtiRedefineClasses.cpp
! src/share/vm/prims/methodHandleWalk.cpp

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