[jdk11u-dev] RFR: 8234930: Use MAP_JIT when allocating pages for code cache on macOS [v7]

[Goetz Lindenmaier]

On Fri, 10 Dec 2021 08:28:55 GMT, Vladimir Kempik <vkempik at openjdk.org> wrote:

>> Hello, here is alternative backport of 8234930 to jdk11u.
>> Very minimalistic change for platforms other than macos, just one unused argument.
>> We have used this patch in zulu11 for more than a year now and found no issues with it on macos and other platforms.
>> 
>> Technically it's mostly the same as previous (3patch) version but has no prerequests.
>
> Vladimir Kempik has updated the pull request incrementally with one additional commit since the last revision:
> 
>   put multiline code difference under ifdefs instead of MACOS_ONLY

thanks for reworking this.  It looks much better now, more safe for all the other platforms.
My choice of macros would have been the COMMA approach, but like this it is 
good, too.

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/710