On Thu, 8 May 2025 07:54:17 GMT, Per Minborg <pminb...@openjdk.org> wrote:
>> As we advance, converting older JDK code to use the relatively new FFM API
>> requires system calls that can provide `errno` and the likes to explicitly
>> allocate a MemorySegment to capture potential error states. This can lead to
>> negative performance implications if not designed carefully and also
>> introduces unnecessary code complexity.
>>
>> Hence, this PR proposes adding a JDK internal method handle adapter that can
>> be used to handle system calls with `errno`, `GetLastError`, and
>> `WSAGetLastError`.
>>
>> It relies on an efficient carrier-thread-local cache of memory regions to
>> allide allocations.
>
> Per Minborg has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Remove class
src/java.base/share/classes/jdk/internal/foreign/CaptureStateUtil.java line 244:
> 242: }
> 243:
> 244: private static MethodHandle makeBasicHandle(BasicKey basicKey) {
more than a "basic handle" this seems more a "return filter"
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PR Review Comment: https://git.openjdk.org/jdk/pull/25043#discussion_r2079227117
