[imp-hackers] cl-ext:exit

[Erik Huelsmann]

On Thu, Jul 2, 2009 at 5:26 PM, Juan Jose
Garcia-Ripoll<juanjose.garciaripoll at googlemail.com> wrote:
> On Thu, Jul 2, 2009 at 4:32 PM, Sam Steingold<sds at gnu.org> wrote:
>> On Thu, Jul 2, 2009 at 2:32 AM, Juan Jose
>> Garcia-Ripoll<juanjose.garciaripoll at googlemail.com> wrote:
>>> Could we introduce also the notion of "finalizers" or things to be
>>> done before exiting, perhaps in the form of a special variable with a
>>> list of handlers? QUIT then would have to take an additional option,
>>> deciding whether to honor or not those handlers.
>>
>> http://clisp.podval.org/impnotes/custom-init-fini.html#fini-hooks
>>
>> 31.1.3. Customizing Termination
>>
>> CUSTOM:*FINI-HOOKS* is run like this:
>>
>> (MAPC #'FUNCALL CUSTOM:*FINI-HOOKS*)
>
> ECL's EXT:*EXIT-HOOKS* does the same, but first the point is not so
> much showing that my implementation does this, but agreeing in a
> reasonable naming and functionality beyond current hacks. For
> instance, is there a way to exit without calling the exit hooks? Does
> it make sense to add that functionality to QUIT? Should exit hooks
> really reside in a special variable? What about then with accidental
> thread local bindings? Or if a user cleans up the variable?

How does special binding work in ECL? Special bindings in ABCL are
thread-local, only (SETF SYMBOL-VALUE) isn't.

Bye,

Erik.