OpenBFS (was Re: C++ code in a kernel module?)

[Pedro F. Giffuni]

Hi;

Attached is a good reasons why someone my want to use C++ in the kernel.

cheers,

   Pedro.

(FWIW, OpenBFS is under an MIT license)
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http://open-beos.sourceforge.net/tms/team.php?id=2

OpenBFS, as all file systems under BeOS, is being developed as a kernel add-on.
Unlike all other file systems (and kernel add-ons in general), it is being
developed in C++. Contrary to popular belief, it is possible to use C++ in the
kernel provided you play by the book and follow some rules:


* No exceptions 
* (Almost) no virtuals (well, the Query code in OpenBFS uses them) 
* It's basically only the C++ syntax, and type checking 
* Since one tend to encapsulate everything in classes, it has a slightly higher
memory overhead 

This is acceptable as we get some benefits out of it: 
* Nicer code 
* Easier to maintain 
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