RFR: 8341692: Implement JEP 490: ZGC: Remove the Non-Generational Mode [v2]

[Stefan Karlsson]

On Wed, 9 Oct 2024 12:57:36 GMT, Axel Boldt-Christmas <aboldtch at openjdk.org> wrote:

>> This is the implementation task for `JEP 490: ZGC: Remove the Non-Generational Mode`. See the JEP for details. [JDK-8335850](https://bugs.openjdk.org/browse/JDK-8335850)
>
> Axel Boldt-Christmas has updated the pull request incrementally with six additional commits since the last revision:
> 
>  - LargeWindowPaintTest.java fix id typo
>  - Fix problem-listed @requires typo
>  - Fix @requires !vm.gc.Z, must use vm.gc != "Z"
>  - Reorder z_globals options: product > diagnostic product > develop
>  - Consistent albite special code style
>  - Consistent order between ZArguments and GCArguments

src/hotspot/share/runtime/arguments.cpp line 523:

> 521: 
> 522:   { "MetaspaceReclaimPolicy",       JDK_Version::undefined(), JDK_Version::jdk(21), JDK_Version::undefined() },
> 523:   { "ZGenerational",                JDK_Version::jdk(23), JDK_Version::jdk(24), JDK_Version::undefined() },

FTR: This line depends on what version the JEP gets targeted to.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21401#discussion_r1793510168