Em... what is going on here? The a_ref2's should be same hash, now shouldn't they? 
use threads;
use threads::shared;

my %a;
my $a_ref = \%a;

&resetCounters();
threads->create('add', $a_ref);
threads->create('printCounters', $a_ref);
#threads->create('loop', $a_ref)->join;
#&printCounters();
&loop();

sub loop {
    while (1) {
        sleep 1;
    }
}

#&printCounters();

#print $a{'modified'} . "\n";

sub printCounters {

    my $a_ref2 = shift;
    print "print REF2: $a_ref2\n";

    while (1) {
        #print "MOD: " . $a{'modified'} . "\n";
        print "MOD: " . $$a_ref2{'modified'} . "\n";
        sleep 1;
    }
}

sub resetCounters {

    $a{'added'} = 0;
    $a{'removed'} = 7;
    $a{'modified'} = 0;

    print $a{'modified'} . "\n";
}

sub add {

    my $a_ref2 = shift;
    print "add REF2: $a_ref2\n";

    while (1) {

        print "add\n";
        $$a_ref2{'modified'}++;
        foreach (keys %$a_ref2) {
            print $_ . "  " . $$a_ref2{$_} . "\n";
        }
        sleep 5;
    }
}

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In reply to Re^2: References on hashes! by Ace128
in thread References on hashes! by Ace128

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