Request for review: 7174978: NPG: Fix bactrace builder for class redefinition

Coleen Phillimore coleen.phillimore at
Wed Dec 5 11:23:42 PST 2012

Summary: Save the set of backtraces to use for on stack method walking 
for redefine classes.

I also moved metadataOnStackMark class to it's own file because it's not 
only used for redefine classes.   Some metadata can be individually 
deallocated (eg. the Method* created in the relocator).

open webrev at
bug link at

Ran test that will be added to the jdk/tests in 
java/lang/instrument/ (to be checked in 


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