Re: [ns] how to schedule event in ns

[Xuan Chen <xuanc@ISI.EDU>]

In my understanding, the Event intr has no explicit meaning, but to
trigger the upper layer to send another packet down (ie, the ifq
layer). You may want to dubug the code a little bit, then you may get some
idea. Hope it helps,

-chen xuan


 On Sun, 10 Jun 2001, Xiao Xuan wrote:

> Hi, everyone,
>     I want to use ns to do something in wireless mac. I find that there is a 
> member varibles -- Event intr_ in file mac.h. But I don't find any initials 
> or assignments for it. In file  mac.cc, I also find that a function 
> following uses this variable.
> void Mac::sendDown(Packet* p)
> {
> 	Scheduler& s = Scheduler::instance();
> 	double txt = txtime(p);
> 	downtarget_->recv(p, this);
> 	if(!abstract_)
> 		s.schedule(&hRes_, &intr_, txt);
> }
> Can someone give me some explanation?
>     Btw, in function Scheduler::instance().schedule(uptarget_, p, delay_) , 
> uptarget_  is a pointor to NsObject object. But the schedule's definition is 
> schedule(Handler* h, Event* e, double delay). I read the ns manual ,but feel 
> it is not so comprehensive.
> Tks in advance. :)
> 
> Xiao Xuan
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-- 
Xuan Chen
USC/ISI