On Fri, 2010-07-23 at 17:34 +0000, Panos Μatzakos wrote:
> Hello and thanks for the answer. Well, now i know better what i need to do
> and i am not sure if handlers is what i need. I try to implement a mac
> protocol (802.11 csma/ca) and i am using the following flowgraph:
>
> Timedsource -> Queue -> mysocket -> Discard
>
> where mysocket is the main element of my router which implements the
> algorithm of the protocol and sends packets to PHY through sockets. So, i
> want to be able to view from inside of mysocket when the Queue gets empty. Is
> there a way to do that?
>
> Thank you
>
I assume mysocket is pull->pull !?
Then you will call something like
mysocket::pull() {
Packet * p = input(0).pull();
}
p is NULL exactly if Queue is empty.
Further reading:
The Notifier class, especially Notifier::upstream_empty_signal
Harald
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