Re: [ns] Quick question on Queue Mngt

["Arun Gandhi" <arungandhi_ns@hotmail.com>]

Hi,

Thanks for the note. I am sorry I don't understand what you'd mentioned.

In my command function I have,

if (strcmp(argv[1], "do-control-queue")) {

	blocked_ = 1;
	blocked_ = 0;

	Packet *tp = deque();
	if (tp != 0) {
		blocked_ = 1;
		target_ ->recv(tp, &qh_);
	}

	return (TCL_OK);
}

So I first block the queue, then by unblocking it I get a packet from the 
queue. If the queue is not empty I again block the queue and forward the 
packet to the destination. What is wrong in my understanding? It may sound 
silly but i have tried this for some time now and nothing seems to work.

Your hellp will be really appreciated.

Thanks,
Arun

>From: Garetto Michele <garetto@polito.it>
>Reply-To: garetto@polito.it
>To: Arun Gandhi <arungandhi_ns@hotmail.com>
>Subject: Re: [ns] Quick question on Queue Mngt
>Date: Thu, 22 Mar 2001 11:05:50 +0100
>
>On Thu, 22 Mar 2001, you wrote:
> > Hi,
> >
> > I've been trying to control the queue. That is, I just want the node to 
>send
> > only "x" number of packets from the queue of length "z" (where z > x) 
>and
> > block the rest (z-x packets).
> >
> > I am not able to control that. I have been trying blocking/unblocking 
>the
> > queue but to no success. I'd appreciate quick help.
> >
> > Thanks,
> > Arun
> > _________________________________________________________________
> > Get your FREE download of MSN Explorer at http://explorer.msn.com
>
>You have to modify the deque function in C++ (file queue.cc): return 0 
>(NULL)
>with an if condition on the queue lenght.
>(I suggest to create a new kind of queue of your own, derived from class
>Queue, but this requires to know how to bind it with tcl. See the manual)
>Michele
>--
>
>--------------------------------------------------------------
>Michele Garetto
>Dipartimento di Elettronica, Politecnico di Torino
>Corso Duca degli Abruzzi 24, 10129 Torino, Italy
>e-mail: garetto@.polito.it
>Phone: + 39 011 5644053
>Fax:   + 39 011 5644099
>--------------------------------------------------------------

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