FreeLists / openbeos / [openbeos] Re: Using Haiku code

["Waldemar Kornewald" <Waldemar.Kornewald@xxxxxx>]

> Our code is always open for anyone to use. That is the nature of MIT. :-D

Still, I hope we get something back from the people who use our code. ;)
What kind of driver do you want to write, Lorenzo?

> Now, having said that, using C++ in the kernel is tricky and more so in R5 
> than 
> in Haiku. There is an old newsletter article from Be on this. 

Actually, the only things you cannot use are exceptions and RTTI stuff, i.e.: 
use static_cast instead of dynamic_cast. And of course you cannot use dynamic 
kernel libraries, so if you want to share C++ code between multiple modules you 
must compile the classes into every module using that code (e.g. by linking 
your modules against a static library containing the C++ class code).

> I took a quick peek at Vector.h and kernel_cpp.h and nothing really strikes 
> me 
> as being unusable in the R5 kernel.

Niels Reedijk and I use C++ (including our list templates) for our kernel 
modules and it works very well in R5.

Bye,
Waldemar