weeding out c++ keywords from sys/sys

[cpghost]

On Sun, Feb 15, 2009 at 09:50:04AM -0800, Marcel Moolenaar wrote:
> On Feb 15, 2009, at 7:33 AM, Christoph Mallon wrote:
> > More robust error handling and less tedious resouce management  
> > directly come to mind:
> > Just look at normal C functions which allocate resources and have  
> > multiple points which can fail. They are the usual mess of if()s,  
> > goto error and lots of cleanup code. Further all this code looks  
> > pretty much the same in several modules. In C++ you write the  
> > resource handling code once (constructors/destructors) and then you  
> > cannot forget to clean up, because thanks to scoping and defined  
> > life ranges it happens automatically.
> 
> While on the surface this looks better, under the hood
> it's just the same. Worse in most likelihood, because
> with C the programmer writes the logic that is known to
> be needed (assuming no bugs). With C++ it's the compiler
> that generates code that handles all possible scenarios,
> and goes beyond what is strictly needed -- as such the
> cost tends to be higher, even when there are no errors
> or exceptions.
> 
> I'm not saying this is a problem. All I'm saying is that
> you move responsibility from the programmer to the compiler
> and in general this comes at a (runtime_ cost. One we may
> very well accept, mind you...

You just have to know how to use C++ properly and avoid
some constructs to create efficient code. Have a look at
L4::Pistachio for an example:

http://l4ka.org/projects/pistachio/

> Marcel Moolenaar
> xcllnt at mac.com

-cpghost.

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