On Mon, 24 Aug 2026 07:06:29 GMT, Axel Boldt-Christmas <[email protected]> 
wrote:

>> src/hotspot/share/runtime/objectMonitor.hpp line 236:
>> 
>>> 234:   uintptr_t           metadata() const;
>>> 235:   void                set_metadata(uintptr_t value);
>>> 236:   volatile uintptr_t* metadata_addr();
>> 
>> If I remember this correctly metadata could be two different things, but 
>> with the lock in the markWord gone, it can now only be one thing.  But I 
>> guess that one thing is the hash code as uintptr_t ?
>> Is metadata_addr() used?
>
> I agree we should probably fold `metadata` into `hash` functions and rename 
> and retype the field to be  `intptr_t _hash` a bit more churn but feels like 
> we do not benefit from this abstraction anymore.

Separate but would also be nice to migrate the object monitors to Atomic.

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PR Review Comment: https://git.openjdk.org/jdk/pull/32471#discussion_r3841321899

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