RFR: 8297766: Remove UseMallocOnly development option [v2]

[Thomas Stuefe]

On Mon, 5 Dec 2022 10:57:27 GMT, Afshin Zafari <duke at openjdk.org> wrote:

>> ### Description
>> The UseMallocOnly development option was originally used to detect memory stomping bugs with Arena allocations when the JVM was first in development.
>> 
>> The option has had a few bugs and is not in general use. There are ideas to add another way of Arena canary checking.
>> 
>> ### Patch:
>> All occurrences of UseMallocOnly are removed.
>> 
>> ### Tests:
>> Local, gTests: resourceArea and Arena
>> Mach5: tier1-5
>
> Afshin Zafari has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:
> 
>  - 8297766: Remove UseMallocOnly development option
>  - 8297766: Remove UseMallocOnly development option
>  - 8297766: Remove UseMallocOnly development option
>  - UseMallocOnly instances are removed

Thank you! Looks good to me. I can sponsor for you, but I believe you need integrate first.

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PR: https://git.openjdk.org/jdk/pull/11456