RFR: 8332362: Implement os::committed_in_range for MacOS and AIX [v6]

[Robert Toyonaga]

On Sat, 15 Jun 2024 05:52:26 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Robert Toyonaga has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Add #else branch for non-AIX platforms.
>
> test/hotspot/jtreg/runtime/Thread/TestAlwaysPreTouchStacks.java line 119:
> 
>> 117:             if (isLinux()) {
>> 118:                 options.add( "-XX:-UseMadvPopulateWrite");
>> 119:             }
> 
> Please remove this. There have been discussions about this in [JDK-8324781](https://bugs.openjdk.org/browse/JDK-8324781), and I changed my mind about this. I think we should test the default, whatever the default is (and if pretouching by default is broken on Oracle Linux, so be it).

After merging master, it looks like a recent PR already adds `-XX:-UseMadvPopulateWrite` to this test. Should I remove that too? https://github.com/openjdk/jdk/pull/18592/files

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PR Review Comment: https://git.openjdk.org/jdk/pull/19455#discussion_r1643317324