RFR: 8347408: Create an internal method handle adapter for system calls with errno [v14]

[Per Minborg]

On Wed, 15 Jan 2025 16:13:38 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Per Minborg has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Use invokeExact semantics in the tests
>>  - Clean up
>
> src/java.base/share/classes/jdk/internal/foreign/CaptureStateUtil.java line 288:
> 
>> 286: 
>> 287:         // Using an int lock is faster than CASing a reference field
>> 288:         private int lock;
> 
> can this be  a `boolean`? Or, maybe keep the int, but declare useful static constants, like "READY", "IN_USE" etc.

`int` is the fastest. I've tried `boolean`, `byte` and `short` as well. I will add constants.

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PR Review Comment: https://git.openjdk.org/jdk/pull/22391#discussion_r1918192669