jextract and inline functions

[Jorn Vernee]

Hi Artem,

Usually inline functions are problematic since the function doesn't 
appear in the shared library, so the JVM can not link against it.

However, it looks like liburing [1] also has an ffi-friendly version of 
the library that does include all symbols in the shared library.

Looking at the liburing.h header file [2], this is achieved by only 
conditionally defining functions as `static inline`. You should be able 
to define `IOURINGINLINE` to an empty string using `-DIOURINGINLINE=` 
(-D is a jextract option), and then jextract should pick up the function.

HTH,
Jorn

[1]: https://github.com/axboe/liburing
[2]: 
https://github.com/axboe/liburing/blob/4b7a98ce3e766953eac1b18998d76d38dd9bff09/src/include/liburing.h#L37-L39

On 12/10/2023 22:27, Artem Ananev wrote:
> Hi, project Panama team,
>
> I use jextract to generate Java classes for liburing Linux library (a wrapper over IO_uring), the header is liburing.h Many functions in the header are "static inline”, and jextract skips them altogether. Some of them are one-liners and can be re-implemented in Java code, but some are quite complicated. What’s the recommended way to deal with such cases?
>
> Thanks,
> Artem
>