view src/share/vm/includeDB_zero @ 1716:be3f9c242c9d

6948538: CMS: BOT walkers can fall into object allocation and initialization cracks Summary: GC workers now recognize an intermediate transient state of blocks which are allocated but have not yet completed initialization. blk_start() calls do not attempt to determine the size of a block in the transient state, rather waiting for the block to become initialized so that it is safe to query its size. Audited and ensured the order of initialization of object fields (klass, free bit and size) to respect block state transition protocol. Also included some new assertion checking code enabled in debug mode. Reviewed-by: chrisphi, johnc, poonam
author ysr
date Mon, 16 Aug 2010 15:58:42 -0700
parents c18cbe5936b8
children
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cppInterpreter_<arch>.cpp               stack_<arch>.inline.hpp

entryFrame_<arch>.hpp                   javaCalls.hpp
entryFrame_<arch>.hpp                   stack_<arch>.hpp

fakeStubFrame_<arch>.hpp                stack_<arch>.hpp

frame.hpp                               stack_<arch>.hpp

frame.inline.hpp                        fakeStubFrame_<arch>.hpp
frame.inline.hpp                        entryFrame_<arch>.hpp
frame.inline.hpp                        interpreterFrame_<arch>.hpp
frame.inline.hpp                        sharkFrame_<arch>.hpp

frame_<arch>.cpp                        interpreterRuntime.hpp
frame_<arch>.cpp                        scopeDesc.hpp

interpreter.hpp                         entry_<arch>.hpp

interpreterFrame_<arch>.hpp             bytecodeInterpreter.hpp
interpreterFrame_<arch>.hpp             methodOop.hpp
interpreterFrame_<arch>.hpp             stack_<arch>.hpp
interpreterFrame_<arch>.hpp             thread.hpp

interpreterRT_<arch>.cpp                stack_<arch>.inline.hpp

sharkFrame_<arch>.hpp                   methodOop.hpp
sharkFrame_<arch>.hpp                   stack_<arch>.hpp

stack_<arch>.hpp                        sizes.hpp

stack_<arch>.inline.hpp                 stack_<arch>.hpp
stack_<arch>.inline.hpp                 thread.hpp

stack_<arch>.cpp                        interpreterRuntime.hpp
stack_<arch>.cpp                        stack_<arch>.hpp
stack_<arch>.cpp                        stack_<arch>.inline.hpp

stubGenerator_<arch>.cpp                stack_<arch>.inline.hpp

thread.hpp                              stack_<arch>.hpp