How do I (if it's even possible) intercept any changes to the REFCNT of an object?

When you create a reference to an object the object's REFCNT increases by 1. When you lose a reference to an object, then it's REFCNT decreases by 1.

use B;

my $ref = {}; # get a reference to our object (a hash)
print B::svref_2object($ref)->REFCNT; # prints 1

my $copy = $ref;
print B::svref_2object($ref)->REFCNT; # prints 2

undef $copy;
print B::svref_2object($ref)->REFCNT; # prints 1 again

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I would like to be able to "intercept" when these changes occur. Is this possible? I've been looking through the perl source, perlguts, perlapi ... As of yet though I can't find a way to do this.

So I now turn to the Monks, please help...

Thanx,
Vernon

In reply to Intercept any changes to the sv_refcnt/SvREFCNT of an object by vernonlyon

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