[Mimedefang] Question about lifetime of variables

[Jason Kontkanen]

Hello all,

I'm not sure if the subject is the right name for my question, but basically
what I'm wondering is how long a variable "lasts" in MIMEDefang.  For
instance, assume in filter_begin I use variable $foo to do some tests ($foo
defined outside of filter_begin obviously, or it'd go out of scope as soon
as filter_begin ended).  The act of populating $foo is very expensive, so I
want to do it as little as possible.  So, in filter_begin, i check to see if
$foo is empty, and if so, call my expensive function to populate it.  Now,
my question is, do the slave threads (sorry if I have the terms wrong) stay
in memory, and therefore keep $foo "alive", or will each mail require $foo
be repopulated?

Thanks in advance,

Jason