[Click] Timer !

[el.drago@tiscali.it]

Hi to all! 
I am trying to introduce a very (hopefully) simple timer in my 
module. 
It WOULD simply call a function when it expires (well, it will be 
reset many times and only if nobody resets it for some time, and its 
time expires, it has to call a function, then re-reset itself).

Searching in the mailing list i have found this tip:

// Runs the run_timer function upon expiry
class MyElement: public Element {
   public:
   …
   void run_timer();
   private:
   Timer timer;
}
MyElement::MyElement(): timer(this){
   timer.initialize(this);
   timer.schedule_after_ms(1000);
   return 0;
}
void MyElement ::run_timer(){
   // do something
   timer.schedule_after_ms(1000);
}


Well, I tried to fit this in my module but first of all i got an 
error: 
          "error: returning a value from a constructor" 
so I pull out the "return 0" from the constructor (originally in my 
code there isn't it).
After fixing minor errors i got only 2 identical warnings: 
          "warning: ‘schedule_after_ms’ is deprecated (declared at ..
/include/click/timer.hh:212)"
but I have no idea how to fix them.
So i try to run click but.. DAMN! as I hit -return- i got:
     "click: ../lib/timer.cc:130: void Timer::schedule_at(const 
Timestamp&): Assertion `_router && initialized()' failed.
     Aborted"

I "googled" for at least 3 hours searching how to make this 
(apparently) easy timer (or better a trigger for time-out) but, really 
i didn't found real help.
Anyone can advice me how I could write it down, or knows where i can 
find an easy explanation [I tried understanding timer.cc and .hh but it 
doesn't help me :( ]

Thanks in advance for any kind of help.
Massimo




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