[ns] help me about SMAC

[Amin Irandoost]

Hi all

Please help me

When a node in smac select your scheduler in function "void
SMAC::setMySched(Packet *pkt)"

Then it execute follow instruction

"mhCounter_[0]->sched(CLKTICK2SEC(listenTime_));"

My question is :

1- in the follow function in this instruction "TimerHandler::sched(time)"
after time seconds what expire function is running????



2- What is meaining TIMER_IDLE,TIMER_PENDINIG and TIMER_HANDLING?

In the void SmacCounterTimer::sched(double time) {

                // the cycle timer assumes that all time shall be scheduled
with time "left to sleep"

                // and not the absolute time for a given state (sleep, sync
or data). Thus inorder

                // to schedule for a sleep state, need to schedule with
aggregate time CYCLETIME

                // (sleeptime+synctime+dadatime).

                // Similarly for sync state, schedule with listenTime_
(synctime+datattime)

                // This is implemented to be in step with the counter used
in actual smac.



                tts_ = time; // time before it goes to sleep again

                stime_ = Scheduler::instance().clock();



                if (time <= CLKTICK2SEC(cycleTime_) && time >
CLKTICK2SEC(listenTime_)) { // in sleep state

                                value_ = sleepTime_;

                                if (status_ == TIMER_IDLE)

                                                TimerHandler::sched(time -
CLKTICK2SEC(listenTime_));

                                else

                                                TimerHandler::resched(time -
CLKTICK2SEC(listenTime_));



                } else if ( time <= CLKTICK2SEC(listenTime_) && time >
CLKTICK2SEC(dataTime_)) { // in sync state

                                value_ = syncTime_;

                                printf("\ndididididididid\n");

                                if (status_ == TIMER_IDLE)

                                                TimerHandler::sched(time -
CLKTICK2SEC(dataTime_));

                                else

                                                TimerHandler::resched(time -
CLKTICK2SEC(dataTime_));



                } else { // in data state

                                assert(time <= CLKTICK2SEC(dataTime_));

                                value_ = dataTime_;

                                if (status_ == TIMER_IDLE)

                                                TimerHandler::sched(time);

                                else

                                                TimerHandler::resched(time);




                }



}



The second question is:

In the SMAC protocol when receiving packet  from network function smac::recv
is call

Then how to handleRecvTimer function is call??



I'm waiting for your reply

Thanks in advanced

Bye



-- 
Amin Irandoost