Hallo ns-users
I am working to extend the controlled load service implemented with
intergrated service
in Ns2 (file: .../adc/simple-intserv-sched.cc) so that it will support
multiservices.
That is I want to add more queues so that each class of service will be
mapped to a
queue. Here is the c++ code to create 4 queues for the multiservice:
#define CLASSES 4
class MultiClassServ : public Queue {
public:
MultiClassServ() {
int i;
char buf[10];
for (i=0;i<CLASSES;i++) {
q_[i] = new PacketQueue;
qlimit_[i] = 0;
sprintf(buf,"qlimit%d_",i);
bind(buf,&qlimit_[i]);
}
}
protected :
void enque(Packet *);
Packet *deque();
int command(int argc, const char*const* argv);
PacketQueue *q_[CLASSES];
int qlimit_[CLASSES];
};
The multiple queues created in an array in the above code is added as
an object to a
link. The problem I am having now is how to add the measurement module
in the link to
measure each of the queue in the array of packet queues.
The original implemented intserv link (../tcl/lib/ns-intserv.tcl) did
the measurement for
controlled load service queue in the link as follows:
if { [lindex $arg 5] == "CL" } {
#Create a suitable est unit set esttype
[lindex $arg 4]
set est_ [new Est/$esttype]
$est_ set src_ [$src id]
$est_ set dst_ [$dst id]
$adc_ attach-est $est_ 1
#Create a Measurement Module set
measmod_ [new MeasureMod]
$measmod_ target $queue_ ;# measurement module
set here to measure queue.
$adc_ attach-measmod $measmod_ 1
}
In this case there is one queue. But in my extension there are 4
queues. The problem is
that, I can create four instances of the measurement module but I have
only one instance
of the queue object. Do anyone have idea how i can have access to each
of the queue in
the queue array to measure it and also to monitor it?
I am very grateful for your help!
Thanks!
Jobby.
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