On Fri, Jan 18, 2013 at 9:50 PM, Matthew Mondor <mm_lists@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.

Juanjo

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