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Date: Tue, 11 Jul 2006 10:14:03 -0600 (MDT)
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To: V.Haisman@sh.cvut.cz
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: freebsd-hackers@freebsd.org, delphij@delphij.net, julian@elischer.org,
	mag@intron.ac
Subject: Re: kern/99979: Get Ready for Kernel Module in C++
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In message: <44B2D2DF.2000401@sh.cvut.cz>
            V=E1clav Haisman <V.Haisman@sh.cvut.cz> writes:
: Deciding that some features are bad beforehand, before you evaluate t=
hem
: is IMO bad idea. Let interested people write a bunch of C++ modules w=
ith
: the complete language before deciding on what shouldn't be used.

There's actually a fair amount of experience with people doing C++ in
FreeBSD kernels.  People have been doing things with it for about 8
years now.  There are significant performance issues with even C code
compiled as C++.  It is possible to write fast C++ for kernel work,
but it is also very easy to write really bad C++ for kernel work.
Easier than bad C code.

There's reasons that people here are somewhat skeptical about using
C++ in the kernel.

Warner