[Ecls-list] Special variables and threads

[Peter Enerccio]

Thanks, good to know because I was wondering if I have to protect special
variables in some ways.


2013/1/18 Matthew Mondor <mm_lists at pulsar-zone.net>

> On Fri, 18 Jan 2013 22:40:49 +0100
> Juan Jose Garcia-Ripoll <juanjose.garciaripoll at gmail.com> wrote:
>
> > On Fri, Jan 18, 2013 at 9:50 PM, Matthew Mondor <
> mm_lists at pulsar-zone.net>wrote:
> >
> > > If you however want to create them from a thread using
> > > defparameter/defvar, I'd have to check but my guess is that ECL uses
> > > the necessary locks internally for its own package/symbol management.
> > > My experience is with special variables to be created before the other
> > > threads are launched.
> > >
> >
> > One thing that can be easily implemented, but which is currently
> > deactivated, would be to copy all the special variable bindings from the
> > parent thread, so that one may do
> >
> > (let ((variable value))
> >   (declare (special variable))
> >   ... launch process ...)
> >
> > and the process starts with an outer binding of VARIABLE. I never
> > implemented it because I am not sure what people are used to in the Lisp
> > world.
>
> How would process-wide (shared with all threads) bindings be done if
> all special variables were automatically locally bound in new threads?
> Perhaps that I misunderstood, though.
>
> Thanks,
> --
> Matt
>
>
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-- 
Bc. Peter Vaňušanik
http://www.bishojo.tk
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