I'm trying to find out why DESTROY is sometimes called twice on some of my objects.

I've boiled the issue down to this script:

#!/usr/bin/perl

package MyModule;

use Devel::Peek;

sub new {
    print "IN NEW\n";
    return bless {};
}

sub DESTROY {
    print "======= BEGIN DESTROY:".$$."========\n";
#    print Dump(@_);
    print "============ END DESTROY:".$$."========\n";
}

1;

package main;

use Net::Server::PreFork;
my $hardtodestroy = new MyModule;
Net::Server::PreFork->run(max_servers=>1, min_servers=>1, min_spare_se
+rvers=>0, max_spare_servers=>0);

[download]

Try run it a few (10, 20,...) times interrupting it with Ctrl-C. Eventually you'll get a run like this:

2014/05/19-08:55:41 Server closing!
======= BEGIN DESTROY:9980========
======= BEGIN DESTROY:9980========
============ END DESTROY:9980========
======= BEGIN DESTROY:9979========
============ END DESTROY:9979========

[download]

?!?!!? ... why was DESTROY called twice in the same process? ... and why didn't it end?

Enabling Devel::Peek will reveal it's 2 difference references to the same Perl object.

I've reproduced the problem on Perl 5.10/Debian and Perl 5.14/Ubuntu. ... but have been unable to find anything similar by googling which couldn't be explained by some error in an XS module. ... but I think I've ruled that out in the above example.

In reply to Is this absurd, or have I not RTFM? by petermogensen

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