On Wed, 24 May 2023 02:08:25 +0200
<[email protected]> wrote:
> initialize = function() {
>
> .C("make_native_obj", self$native_obj)
>
> })
> extern "C" void make_native_obj(double *obj) {
>
> auto native_obj = new NativeObjStruct();
>
> memcpy(obj, &native_obj, sizeof(obj));
>
> }
> Is there a better way to do this?
The .Call() interface (where functions take an arbitrary number of
native R objects and return a native R object) combined with external
pointers is likely to be a better approach here:
https://cran.r-project.org/doc/manuals/R-exts.html#External-pointers-and-weak-references
On the R side, the returned SEXP will have class 'externalptr', with
not much to do about it programmatically. C code can additionally
register a finalizer on the object in order to release the memory
automatically after the it is discarded.
--
Best regards,
Ivan
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