On Mon, 23 Feb 2026 07:15:07 GMT, Yasumasa Suenaga <[email protected]> wrote:

>> We can extract heapdump from coredump via `jhsdb jmap --binaryheap`. However 
>> GC roots for system classes (`HPROF_GC_ROOT_STICKY_CLASS`) are not available 
>> i it even though heapdump from HotSpot contains.
>> 
>> SA should generate `HPROF_GC_ROOT_STICKY_CLASS` into heapdump.
>
> Yasumasa Suenaga has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   Update src/hotspot/share/runtime/vmStructs.cpp
>   
>   Co-authored-by: David Holmes <[email protected]>

src/hotspot/share/runtime/vmStructs.cpp line 433:

> 431:   static_field(ClassLoaderData,                 
> _the_null_class_loader_data,                  ClassLoaderData*)               
>        \
> 432:                                                                          
>                                                             \
> 433:   volatile_static_field(ClassLoaderDataGraph, _head,                     
>                      ClassLoaderData*)                      \

Sorry the alignment is still off-by-one

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/29781#discussion_r2839665630

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