RFR: 8268470: CDS dynamic dump asserts with JFR RecordingStream

Ioi Lam iklam at openjdk.java.net
Thu Jun 10 17:19:54 UTC 2021


On Thu, 10 Jun 2021 16:15:50 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

> During JFR startup, it redefines some of the builtin classes like java/lang/Throwable. Later, when a subclass of Throwable is loaded, it will inherit the redefined version of Throwable which will not be inside the buffer space or mapped static archive.
> 
> To fix this bug, in `SystemDictionaryShared::check_for_exclusion_impl()`, instead of only checking if the class has been redefined, it also checks if any of its super types has been redefined. If so, exclude the class from the archive.
> 
> - [x] mach5 tier1, tier2 (including the new test)

LGTM

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Marked as reviewed by iklam (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/4467


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