RFR: JDK-8255978: [windows] os::release_memory may not release the full range [v3]

[Thomas Stuefe]

On Wed, 18 Nov 2020 18:46:05 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> LGTM, very nice test case, thanks!
>
>> LGTM, very nice test case, thanks!
> 
> Thanks a lot Yumin!
> 
> I'll change the comment before pushing. I'd like to leave that printing stuff in, but will disable it by default. That way we can switch it on when needed to look what is going on.

I'll integrate now. The remaining error, a crash on Linux in HeapRegion::block_size,  has nothing to do with this patch (I opened https://bugs.openjdk.java.net/browse/JDK-8256641 to track it).

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PR: https://git.openjdk.java.net/jdk/pull/1143