Pass large buffer by reference

[dup2]

Hi all

I just discovered this gem and integrated it into https://github.com/orlon-pro/foxify - works great.

However, I did not find out how to pass data by reference (which I did when using FFI natively) to pass large buffers of data from ruby into a go function. For now I use ruby.Value2String(ruby.VALUE(data)) which I think is a performance penalty as it is used later as []byte .

Can anyone provide me a hint on how to improve this?

[sue445]

@dup2 What about using ruby.RSTRING_PTR and C.GoBytes If you want to finally use the []byte ?

e.g. https://github.com/sue445/funnel_http/blob/6606d8543aca4609f774991f6a5171d5f7822945/ext/funnel_http/funnel_http.go#L122-L128

There is some copying when converting C pointer to []byte using C.GoBytes, but otherwise there should be no overhead.

[dup2]

Thanks - will try according to the sample!