[ndnSIM] Access to the queue inside OnData() in forwarding-strategy

[Ayush Agarwal]

Hi Alex,
I am trying to change the interest limit/interest sending rate on a face.
For this I am calling the functions inside the Limits class associated to a
particular face. But I am unable to find any change in my simulation
results. Can you guide me where I am going wrong.

*Thanks & Regards,*

*Ayush Agarwal*

*Reseach Scholar, Computer Science*

*National Institute of Technology, KarnatakaSurathkal, India*

On Fri, Feb 26, 2016 at 4:16 PM, Ayush Agarwal <ayush0071 at gmail.com> wrote:

> Hi,
> Thanks for your reply. Yes, I have solved the compilation errors. It was
> due to the NULL pointer that was not handled properly.
>
> Thanks & Regards,
> Ayush
>
> On Fri, Feb 26, 2016 at 2:26 PM, Alex Afanasyev <aa at cs.ucla.edu> wrote:
>
>>
>> > On Feb 18, 2016, at 8:42 AM, Ayush Agarwal <ayush0071 at gmail.com> wrote:
>> >
>> > Hello everyone,
>> >
>> > I am using the following code to get hold of the queue object inside
>> the forwarding strategy, OnData(....) function.
>> >
>> > Ptr<NetDeviceFace> netDeviceFace = DynamicCast<NetDeviceFace> (inFace);
>> > if (netDeviceFace == NULL) {  }
>> > Ptr<NetDevice> nd = netDeviceFace->GetNetDevice ();
>> > if (nd == NULL) {  }
>> > PointerValue txQueueAttribute;
>> > nd->GetAttribute ("TxQueue", txQueueAttribute);
>> > Ptr<ns3::Queue> txQueue = txQueueAttribute.Get<ns3::Queue> ();
>> > if (txQueue == 0) {    }
>> >
>> > But I am getting a segmentation fault SIGSEV error while fetching the
>> NetDevice object and the following errors for accessing queue.
>> >
>> > ../src/ndnSIM/model/fw/ndn-forwarding-strategy.cc:238:3: error:
>> ‘PointerValue’ was not declared in this scope
>> >     PointerValue txQueueAttribute;
>> >    ^
>> > ../src/ndnSIM/model/fw/ndn-forwarding-strategy.cc:239:32: error:
>> ‘txQueueAttribute’ was not declared in this scope
>> >    nd->GetAttribute ("TxQueue", txQueueAttribute);
>> >                                 ^
>> > ../src/ndnSIM/model/fw/ndn-forwarding-strategy.cc:243:50: error:
>> expected primary-expression before ‘>’ token
>> >    Ptr<Queue> txQueue = txQueueAttribute.Get<Queue> ();
>> >                                                   ^
>> > ../src/ndnSIM/model/fw/ndn-forwarding-strategy.cc:243:53: error:
>> expected primary-expression before ‘)’ token
>> >    Ptr<Queue> txQueue = txQueueAttribute.Get<Queue> ();
>> >
>> >
>> > Can you please point me out where I am going wrong.
>>
>> Hi Ayush,
>>
>> Sorry for the delayed response.  I'm guessing that you have already
>> solved the compilation problem?  Just in case, it is just a matter of
>> adding proper includes (I think <ns3/pointer.h>, <ns3/queue.h>)
>>
>> ---
>> Alex
>>
>>
>
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