Re: [Pharo-dev] How to use ExternalAddress in callouts with new FFI?

On Mon, Dec 28, 2015 at 5:11 PM, Mariano Martinez Peck < marianopeck@gmail.com> wrote:

Hi Esteban,

Previously, I was doing with NB something like this:

*pointer := NativeBoost allocate: 4.* *self primitiveWhatever: pointer*

and:

*primitiveWhatever: pointer* * <primitive: #primitiveNativeCall module: #NativeBoostPlugin error: errorCode >* * ^ self nbCall: #( int void (NBExternalAddress pointer ) )*

But of course that doesn't work with latest FFI. So I tried instead:

*pointer := ExternalAddress allocate: 4.* *primitiveWhatever: pointer* * <primitive: #primitiveNativeCall module: #NativeBoostPlugin error: errorCode >* * ^ self nbCall: #( int void (ExternalAddress pointer ) )*

It looks like if I set "void*" rather than ExternalAddress it does work. Is this the expected path?

But then I get a ExternalAddress class #asExternalTypeOn: which is sent in FFICallout >> resolveType:

Any idea how can I use ExternalAddress in the signature of the FFI primitive call? What am I doing wrong?

Thanks in advance,

-- Mariano http://marianopeck.wordpress.com

-- Mariano http://marianopeck.wordpress.com