But I'm keen to hear what, if any, other options exist - especially any that leave the fork() in place.
Interestingly enough, there's no such problem with *perl* globals
As you know, on Windows, forking is emulated using a thread. Perl globals are duplicated in the pseudo-fork because Perl knows about them. C globals aren't because Perl doesn't know about them.
The solution may be to declare a CLONE() special subroutine in your XS module (or the PM that fronts it) as described in Perlmod.
The basic mechanism is that whenever a thread is spawned (including a pseudo-fork), the CLONE() sub in your namespace will be called and you get the opportunity to make thread specific copies of your internal state. I can't give further details as I've never done it, but there should be some samples around (maybe in the DBD::* namespace?).
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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