RFR: 8305895: Implement JEP 450: Compact Object Headers (Experimental) [v11]

[Thomas Stuefe]

On Wed, 11 Sep 2024 11:25:41 GMT, Johan Sjölen <jsjolen at openjdk.org> wrote:

>> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix FullGCForwarding initialization
>
> src/hotspot/share/memory/metaspace/metablock.hpp line 51:
> 
>> 49:   size_t word_size() const { return _word_size; }
>> 50:   bool is_empty() const { return _base == nullptr; }
>> 51:   bool is_nonempty() const { return _base != nullptr; }
> 
> Can `_base == nullptr` but `_word_size != 0`?

No

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PR Review Comment: https://git.openjdk.org/jdk/pull/20677#discussion_r1759973362