On Tue, 14 Oct 2025 10:38:01 GMT, Darragh Clarke <[email protected]> wrote:

> This PR was originally part of #25546, though that PR has been split in 2, 
> the first chunk was https://github.com/openjdk/jdk/pull/27590.
> 
> This PR aims to convert KQueue to use FFM apis, the first PR in this area 
> added all the jextract generated code needed, while this PR modifies some of 
> the jextract code and then uses it with Kqueue.
> 
> A brief rundown of the changes:
> - The files `errno_h$shared.java` , `kqueue_h$shared.java`, 
> `timespec_h$shared.java` and `timespec_h.java` have all been deleted. This is 
> because they all contained shared elements that could be moved into the 
> Utility file `FFMUtils.java`
> - `Kqueue.c` has been deleted, and all native methods in the other `KQueue` 
> files have been replaced with references to the generated files kevent and 
> kqueue. This is the bulk of the changes
> - Both the `Kqueue()` and `Kevent()` methods in `kqueue_h.java`  were 
> modified to use adapted method handles that will return the errno value

src/java.base/macosx/classes/sun/nio/ch/KQueue.java line 99:

> 97:      */
> 98:     static long getDescriptor(MemorySegment memoryHandle) {
> 99:         return kevent.ident(memoryHandle);

Do you mind going back over the discussion we had in the original PR? The ident 
field is a 64-bit, an fd is an int. This means that KQueue should have a 
getDescriptor that returns an int, or a getIdent that returns a long. The 
former is cleaner at the use-sites.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27796#discussion_r2431823212

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