RFR: 8297718: Make NMT free:ing protocol more granular [v2]

[Johan Sjölen]

On Mon, 28 Nov 2022 13:10:09 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Johan Sjölen has updated the pull request incrementally with 10 additional commits since the last revision:
>> 
>>  - Add test that asserts block integrity after revival
>>  - Make MallocHeader NONCOPYABLE
>>  - Rest of it
>>  - Adjust comments
>>  - Put back comment, suitably rewritten
>>  - Note reversibility of mark_block_as_dead
>>  - Rename record_free_block to record_free
>>  - Rename record_free to deaccount
>>  - Move FreePackage into MallocHeader and rename
>>  - Rename as revive, delete copy ctr
>
> src/hotspot/share/services/mallocHeader.hpp line 125:
> 
>> 123: 
>> 124:  public:
>> 125:   MallocHeader(const MallocHeader&) = default;
> 
> This makes me a bit nervous, where do we copy malloc headers?

Thanks for the catch! It's not necessary, I replaced it with `NONCOPYABLE(MallocHeader)`.

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PR: https://git.openjdk.org/jdk/pull/11390