8368877: Generate Jextract bindings for Kqueue

[DarraghClarke]

This PR is based on #25546 , though it was suggested to split that PR into 2 for easier reviewing and to give better visibility in the git history.
This PR contains all the JExtract generated code that will be needed for converting Java's KQueue implementation to use Panama features instead of JNI. The actual updates to KQueue to make use of these files will come in the second PR.

The basic structure here has the different native structures and methods split into 3 different packages all preceded by
src/java.base/macosx/classes/jdk/internal/ffi/generated/
Included in each package is a file package-info.java which contains the script that was used to generate these files so that others can reproduce them in future.

The only modifications that have been made to the files post-generation are:

• Adding copyright headers
• Adding warning suppression for using restricted methods

Some further modifications to these files to cut down on code duplication and adding support for errno handling on the native calls will come in the 2nd PR alongside the KQueue changes mentioned.

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8368877: Generate Jextract bindings for Kqueue (Sub-task - P4)

Reviewers

• Alan Bateman (@AlanBateman - Reviewer)
• Aleksei Efimov (@AlekseiEfimov - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/27590/head:pull/27590
$ git checkout pull/27590

Update a local copy of the PR:
$ git checkout pull/27590
$ git pull https://git.openjdk.org/jdk.git pull/27590/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 27590

View PR using the GUI difftool:
$ git pr show -t 27590

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/27590.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back dclarke! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@DarraghClarke This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8368877: Generate Jextract bindings for Kqueue

Reviewed-by: alanb, aefimov

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 249 new commits pushed to the master branch:

• f6d77cb: 8347555: [REDO] C2: implement optimization for series of Add of unique value
• 5594d6b: 8368522: (fs) BasicFileAttributes Linux musl 1.2.5 incompatibility with statx
• afda8ad: 8369501: Parallel: Add UseAdaptiveSizePolicy requirement to TestDynShrinkHeap.java
• ... and 246 more: https://git.openjdk.org/jdk/compare/2313f8e4ebe5b6d7542fa8a33fd08673cc0caf10...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[openjdk]

@DarraghClarke The following label will be automatically applied to this pull request:

• core-libs

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 01: Full - Incremental (d7b43cbc)
• 00: Full (53c387e4)

[AlanBateman]

Thanks for doing this, it gives a baseline for the follow-on changes so it's clear what is modified. The package name looks good.

[AlekseiEfimov]

Should the target package be jdk.internal.ffi.generated.kqueue?

[AlekseiEfimov]

LGTM

[DarraghClarke]

/Integrate

[DarraghClarke]

/integrate

[openjdk]

Going to push as commit 0db4702.
Since your change was applied there have been 260 commits pushed to the master branch:

• 28460ca: 8368897: RISC-V: Cleanup RV_EXT_FEATURE_FLAGS & RV_NON_EXT_FEATURE_FLAGS
• 0af959a: 8369560: Slowdebug build without CDS fails
• 98e1d2f: 8369563: Gtest dll_address_to_function_and_library_name has issues with stripped pdb files
• ... and 257 more: https://git.openjdk.org/jdk/compare/2313f8e4ebe5b6d7542fa8a33fd08673cc0caf10...master

Your commit was automatically rebased without conflicts.

[openjdk]

@DarraghClarke Pushed as commit 0db4702.

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