RFR: 8287788: Implement a better allocator for downcalls [v13]

[Matthias Ernst]

On Wed, 22 Jan 2025 17:06:22 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> Matthias Ernst has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   an attempt at a stress test
>
> test/jdk/java/foreign/TestBufferStack.java line 9:
> 
>> 7:  * published by the Free Software Foundation.  Oracle designates this
>> 8:  * particular file as subject to the "Classpath" exception as provided
>> 9:  * by Oracle in the LICENSE file that accompanied this code.
> 
> This is the wrong copyright header. Note that tests have a different header which does not include the class path exception.

Oops, don't know where that one got copied from. Done.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23142#discussion_r1926567541