[Haskell-beginners] Signals and external bindings...

[Brandon Allbery]

On Wed, May 2, 2012 at 2:29 PM, Mike Meyer <mwm at mired.org> wrote:

> On Wed, 2 May 2012 13:46:39 -0400
> Brandon Allbery <allbery.b at gmail.com> wrote:
>
> > On Wed, May 2, 2012 at 1:00 PM, Mike Meyer <mwm at mired.org> wrote:
> > You can use wrappers which save the old signal handlers and install new
> > ones which clean up after your plugins and return.  Doing so, and thereby
> > learning the hard way what "clean up after your plugins" entails (unless
> > you were very careful designing and writing them in the first place),
> will
> > teach you why nobody tries to automatically handle it for you.  (In the
>
> So unless I'm using something like Qt which can catch the signals and
> run it's own code to call back to my code and then shut itself down,
> I'm pretty much SOL.


Pretty much.  And Qt only makes it a little easier; I think there are ways
to do that with Haskell as well, but it doesn't necessarily earn you much
aside from confusion if something goes wrong because of all the boundary
crossings.

-- 
brandon s allbery                                      allbery.b at gmail.com
wandering unix systems administrator (available)     (412) 475-9364 vm/sms
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