RFR: 8374170: I/O Poller updates

Tue Feb 3 15:27:31 UTC 2026

On Tue, 13 Jan 2026 15:29:10 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> The I/O Poller used to support virtual threads doing blocking networking I/O has been significantly refactored in the loom repo. There are several improvements that should be brought to main line:
> 
> 1. New poller mode that uses a read poller per carrier, this is beneficial in some workloads.
> 2. Better cleanup/recovery in the event if a file descriptor or memory can't be allocated during initializatio.
> 3. NativeThread changed to cache native thread ID and avoid JNI call to current0 for each blocking I/O op.
> 
> Testing: tier1 + tier2.

@MBaesken I hope to make this PR "ready for review" soon. Would you be able to check that it builds on AIX?

Thanks, it is missing the close method. I've updated it, would you mind re-testing the build?

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PR Comment: https://git.openjdk.org/jdk/pull/29195#issuecomment-3830711446
PR Comment: https://git.openjdk.org/jdk/pull/29195#issuecomment-3840652222