Re: C++ and the kernel

["H. Peter Anvin" <hpa@zytor.com>]

Followup to:  <Pine.LNX.3.95.1020409085537.4291B-100000@chaos.analogic.com>
By author:    "Richard B. Johnson" <root@chaos.analogic.com>
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
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