RFR: 8303485: Replacing os.name for operating system customization [v6]

[Michael Osipov]

On Fri, 24 Mar 2023 00:27:42 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Improvements to support OS specific customization for JDK internal use:
>>  - To select values and code; allowing elimination of unused code and values
>>  - Optionally evaluated by build processes, compilation, or archiving (i.e. CDS)
>>  - Simple API to replace adhoc comparisons with `os.name`
>>  - Clear and consistent use across build, runtime, and JDK modules
>>  
>> The PR includes updates within java.base to use the new API.
>
> Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Rename OperatingSystem enum values to uppercase

@battleblow FYI

src/java.base/share/classes/jdk/internal/util/OperatingSystem.java line 66:

> 64: 
> 65:     /**
> 66:      * The Linux Operating system.

For the sake if completeness, Linux isn't an operating system, so this statement isn't correct.

src/java.base/share/classes/jdk/internal/util/OperatingSystem.java line 81:

> 79:      */
> 80:     AIX,
> 81:     ;

So no Unknown value?

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PR Comment: https://git.openjdk.org/jdk/pull/12931#issuecomment-1483049583
PR Review Comment: https://git.openjdk.org/jdk/pull/12931#discussion_r1147785316
PR Review Comment: https://git.openjdk.org/jdk/pull/12931#discussion_r1147784804