1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

     2 /*

     3  * Copyright (c) 2006 INRIA

     4  * All rights reserved.

     5  *

     6  * This program is free software; you can redistribute it and/or modify

     7  * it under the terms of the GNU General Public License version 2 as

     8  * published by the Free Software Foundation;

     9  *

    10  * This program is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13  * GNU General Public License for more details.

    14  *

    15  * You should have received a copy of the GNU General Public License

    16  * along with this program; if not, write to the Free Software

    17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    18  *

    19  * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

    20  */

    21 

    22 #ifndef F_VARIABLE_TRACER_H

    23 #define F_VARIABLE_TRACER_H

    24 

    25 #include "ns3/callback.h"

    26 #include <stdint.h>

    27 

    28 namespace ns3 {

    29 

    30 class FVariableTracerBase {

    31 public:

    32   typedef Callback<void,double, double> ChangeNotifyCallback;

    33 

    34   FVariableTracerBase () {}

    35   FVariableTracerBase (FVariableTracerBase const &o) {}

    36   FVariableTracerBase &operator = (FVariableTracerBase const &o) {

    37       return *this;

    38   }

    39 

    40   ~FVariableTracerBase () {}

    41 

    42   void setCallback(ChangeNotifyCallback callback) {

    43       m_callback = callback;

    44   }

    45 protected:

    46   void notify (double oldVal, double newVal) {

    47       if (oldVal != newVal && !m_callback.IsNull ()) 

    48         {

    49           m_callback (oldVal, newVal);

    50         }

    51   }

    52 private:

    53   ChangeNotifyCallback m_callback;

    54 };

    55 

    56 

    57 }; // namespace ns3

    58 

    59 #endif /* F_VARIABLE_TRACER_H */