Sat Oct 31 12:02:11 EDT 2015

PF revisited

PF uses both nonlinear and linear memory.
Code is stored in nonlinear memory.
Data should reause linear memory.

The missing part is a bridge between:
- MIMO dataflow primitives
- buffer allocation and reuse

Assuming the multiple-dispatch is handled elsewhere, the main problem
is per type buffer allocation and reuse.

In an application, there are ususually not a lot of "packet" types
involved, so it might be good to make a registry.

The magic happens in _px_unlink()

Currently, it supports rc objects.  What is needed, is to extend rc,
or make a similar class that performs malloc-like reuse.

That's it.