Re: Libification project (SoC)

From: Matthieu Moy <matthieu.moy@imag.fr>
Date: Mar 16, 2007, 08:58 UTC
Message-ID: <vpqveh15zvn.fsf@olympe.imag.fr>
In-Reply-To: <45FA501B.FA5B9F30@eudaptics.com>

Johannes Sixt <J.Sixt@eudaptics.com> writes:

Show 5 quoted lines

> You could think about longjmp(3)ing out into main(), which would have to
> setjmp(3). But in order to clean up intermediate frames, you would have
> to have a stack of setjmp/longjmp buffers.
>
> Oh, well, how do I *love* them C++ exceptions!

You can have exceptions in C too.

I've used it a bit while contributing to Baz 1.x (the fork of tla). The library used was cexcept ( http://cexcept.sourceforge.net/ ).

As you mention, jumping is the easy part, and cleaning up is the hard one. Baz was using talloc, hacked to somehow work with cexcept. The mini-library doesn't seem to be available as a tarball anymore, so I did the checkout+targz in case someone's curious to have a look, and lazy enough not to install baz to get it:

http://www-verimag.imag.fr/~moy/tmp/talloc-except--2.0.1--patch-2.tar.gz

This stuff is not supported anymore, but very small anyway.

-- 
Matthieu