RFR: 8347408: Create an internal method handle adapter for system calls with errno [v3]

[Shaojin Wen]

On Tue, 6 May 2025 17:16:32 GMT, Shaojin Wen <swen at openjdk.org> wrote:

>> I have the old switch format in anticipation of faster startup.
>
> enhanced 'switch' is just syntax sugar and does not affect startup speed

I looked at the generated bytecode through javap and confirmed that the enhanced switch is just syntactic sugar and no additional classes are generated.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25043#discussion_r2076686117