Re: C++ and the kernel

[H. Peter Anvin]

Followup to:  <[e-mail]>
By author:    "Richard B. Johnson" <[e-mail]>
In newsgroup: linux.dev.kernel
> > 
> > Bollox!
> > 
> > There are many places in the kernel that are actually very OO - look at
> > filesystems for example. The super_operations sturcture is in effect a
> > virtual function table.
> 
> The file operations structure(s) are structures. They are not object-
> oriented in any way, and they are certainly not virtual. The code that
> manipulates them is quite physical and procedural, well defined, and
> visible to the rest of the kernel.
> 

Again, bollocks.  The file operation structures are vanilla vtbl
implementations of virtual functions.  The fact that they're written

foo->f_ops->func(foo, ...);

instead of

foo->func(...);

makes absolutely no difference whatsoever.

	-hpa
-- 
<[e-mail]> at work, <[e-mail]> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt	<[e-mail]>