[ndnSIM] Reply: Question for Pending Interest Table

[Xee]

Hi Alex
Thank you so much, it works for me now! 

rgd
-Xee





------------------ Original ------------------
Sender: "Alex Afanasyev"<alexander.afanasyev at ucla.edu>;
Send time: Tuesday, Apr 16, 2013 11:38 AM
To: "Xee"<1839750381 at qq.com>; 
Cc: "ndnsim"<ndnsim at lists.cs.ucla.edu>; 
Subject: Re: [ndnSIM] Question for Pending Interest Table



I just tried this code with clang++ compiler and it didn't complain.


What you can do, is to write is slightly differently, as you may be facing some problems with operation priorities:


std::cout << ( 100 - pit->GetSize () ) << std::endl;


(the key point is to put parentheses around 100-pit->GetSize())


---
Alex

On Apr 15, 2013, at 8:30 PM, "Xee" <1839750381 at qq.com> wrote:


Hi Alex
Thanks for your email, I am trying to use the funcation to process the output with numbers as:

std::cout << (100)-(pit->GetSize ());

I want to process the value of PIT size from function and calculate with numbers using arithmetical operations. But when I use this function I am receiving the following errors:

Waf: Entering directory `/home/xee/ndnSIM/ns-3/build'
[1002/1994] cxx: src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc -> build/src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc.18.o
../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc: In function ‘void PeriodicStatsPrinter(ns3::Ptr<ns3::Node>, ns3::Time)’:
../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc:56:13: error: expected primary-expression before ‘<<’ token
../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc:56:42: error: invalid operands of types ‘uint32_t {aka unsigned int}’ and ‘const char [2]’ to binary ‘operator<<’
../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc:56:42: error: suggest parentheses around ‘-’ inside ‘<<’ [-Werror=parentheses]
../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc:56:46: error: expected ‘)’ before ‘;’ token
../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc: In function ‘int main(int, char**)’:
../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc:100:6: error: expected primary-expression before ‘<<’ token
cc1plus: all warnings being treated as errors
Waf: Leaving directory `/home/xee/ndnSIM/ns-3/build'
Build failed
 -> task in 'ndn-simple-with-pit-count-stats' failed (exit status 1): 
    {task 158764620: cxx ndn-simple-with-pit-count-stats.cc -> ndn-simple-with-pit-count-stats.cc.18.o}
['/usr/bin/g++', '-O0', '-ggdb', '-g3', '-Wall', '-Werror', '-Wno-error=deprecated-declarations', '-fstrict-aliasing', '-Wstrict-aliasing', '-pthread', '-fno-strict-aliasing', '-fwrapv', '-fstack-protector', '-fno-strict-aliasing', '-Ibuild', '-I.', '-I.', '-I/home/xee/ndnSIM', '-I/usr/include', '-I/usr/include/python2.7', '-DNS3_ASSERT_ENABLE', '-DNS3_LOG_ENABLE', '-DHAVE_PACKET_H=1', '-DHAVE_IF_TUN_H=1', '-DNDEBUG', '-D_FORTIFY_SOURCE=2', '../src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc', '-c', '-o', 'src/ndnSIM/examples/ndn-simple-with-pit-count-stats.cc.18.o']


rgd
-Xee



------------------ Original ------------------
From:  "Alex Afanasyev"<alexander.afanasyev at ucla.edu>;
Date:  Apr 16, 2013
To:  "Xee"<1839750381 at qq.com>; 
Cc:  "ndnsim"<ndnsim at lists.cs.ucla.edu>; 
Subject:  Re: [ndnSIM] Question for Pending Interest Table



Hi Xee,

What kind of error? pit->GetSize () returns just size_t value, which you should be able to use in any way.  Can post the actual error with a context (where are you calling from and how pit variable is defined).


---
Alex

On Apr 15, 2013, at 8:21 PM, "Xee" <1839750381 at qq.com> wrote:

Hi Alex

I am trying to make some mathematical operations with pit->GetSize () function output, 
but it is giving me error. Is there any way to process the output of this function ?



------------------ Original ------------------
From:  "Xee"<1839750381 at qq.com>;
Date:  Apr 16, 2013
To:  "Alex Afanasyev"<alexander.afanasyev at ucla.edu>; 
Cc:  "ndnsim"<ndnsim at lists.cs.ucla.edu>; 
Subject:  [ndnSIM] Question for Pending Interest Table



Hi Alex

Is is possible to set variable timeout for PIT entries during simulation ? 

rgd
-Xee





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