AT LAST !!!! I DID IT!!! The problem was that I was not storing a crucial value for an instance variable , so the void pointer was wrong. Corrected and I can see now the "hello" string inside Pharo :)
Now I can exchange data between C++ and Pharo and use that to call C++ functions/methods inside a C++ executable from Pharo. Unreal and Pharo can now become a reality. Huge thank you for Esteban and UFFI, awesome :D UFFI is far easier than I expected , but still I would like some more information for how to dereference pointer . On Mon, Nov 7, 2016 at 10:30 PM Dimitris Chloupis <kilon.al...@gmail.com> wrote: > So I managed to port all C++ functions to pharo, which basically includes > the following > > Not full definition of function > > open() > lseek() > close() > mmap() > > I have tested them all, they all return proper values from inside Pharo > and Pharo does not crash. > > it seems also that mmap works because it returns a void pointer as it > should. This pointer points to the shared memory where I have put the > string "hello" from another C++ program that has shared the memory . > > So how can from Pharo take the void pointer > > "(void*)@ 16rFFFFFFFF" > > and retrieve the string "hello" that it points to ? > > Essentially I want to dereference the pointer > > I tried to send the message fromCString to the void pointer (ExternalData) > but it crashed Pharo. > > Another question, is it possible to cast a pointer ? (I do this with C++ > programm) > so can I cast from pharo the void pointer to a string pointer ? > > I have also no idea if the void pointer points to a proper memory address > , the documentation says that all pointers live in head but I have no way > to confirm this. > > I am so close to sharing memory between Pharo and C++ that I can smell it > :D >
