Access to Session vars from within Output.php

[eluser]haydenp[/eluser]
Hi

I'm looking to replace the native Output.php (caching) library with my own custom library (minor tweaks required to the native library).

I understand the reason behind not having access to

Code:

$CI =& get_instance();

from within the library ... however, I need to get hold of my session vars from within my custom Output.php library ... is this possible ... or similar to get_instance(), is the session instantiated later, after the caching?