Calling inline functions

[Maurizio Cimadamore]

Inline functions do not exist in the .so/.dll/.dynlib file. They are 
essentially function-like macros, expanded by the compiler whenever they 
are used.

If you want to call them using the current support you need to create 
your own C library wrapper which exposes the additional symbol (as a 
regular function) and then calls the corresponding inline function. Then 
you extract your header (which will also include the original header you 
wanted to work on) with jextract.

In the future we might automate support for function-like macro a 
little, by providing jextract API plugins which generate the correct 
plumbings.

Maurizio

On 20/04/2020 13:34, Ty Young wrote:
> Is calling inline functions supported right now? I'm trying to call 
> this function:
>
>
> __attribute__((always_inline)) static inline int 
> internal_load_libgamemode(void)
>
>
> with:
>
>
> this.address = 
> gamemode_client_h.LIBRARY_LOOKUP.lookup("internal_load_libgamemode");
>
> this.descriptor = FunctionDescriptor.of(MemoryLayouts.C_INT);
>
> this.type = MethodType.methodType(int.class);
>
> this.handle = 
> Foreign.getInstance().getSystemABI().downcallHandle(this.address, 
> this.type, this.descriptor);
>
>
> ...but it fails saying the symbol doesn't exist. Is there a way to 
> call it?
>
>
> Full header: 
> https://github.com/FeralInteractive/gamemode/blob/master/lib/gamemode_client.h
>
>