searching: example of C extension implementing port

[Marco Maggi]

Ciao,

  is there a sample extension implementing an input/output
channel?

I'm thinking of a memory channel (not an interface
to a file or hardware port), something like the string
port; is the channel API of Guile worth learning for this,
or is it better to write something of my own?

I only need the open/close/read/write/end operations, no
events, no seek.

--
Marco Maggi

"They say jump!, you say how high?"
Rage Against the Machine - "Bullet in the Head"