FryingPan/framework/Generic/SyncProperty.h

   1 /*
   2  * Amiga Generic Set - set of libraries and includes to ease sw development for all Amiga platforms
   3  * Copyright (C) 2001-2011 Tomasz Wiszkowski Tomasz.Wiszkowski at gmail.com.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library 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 GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifndef _GENERIC_SYNCPROPERTY_H_
  21 #define _GENERIC_SYNCPROPERTY_H_
  22
  23 #include "RWSyncT.h"
  24 #include "DistributorT.h"
  25
  26 namespace GenNS
  27 {
  28    template <typename T>
  29       class SyncProperty : public RWSyncT<T>, public DistributorT<T, T>
  30    {
  31    public:
  32       virtual T Assign(T val)
  33       {
  34          T old;
  35          old = RWSyncT<T>::Assign(val);
  36          if (old != val)
  37          {
  38             DistributorT<T,T>::Send(old, val);
  39          }
  40          return old;
  41       };
  42
  43       virtual T AttemptAssign(T val, bool *bRes)
  44       {
  45          T old;
  46          old = RWSyncT<T>::AttemptAssign(val, bRes);
  47          if (true == *bRes)
  48          {
  49             if (old != val)
  50             {
  51                DistributorT<T,T>::Send(old, val);
  52             }
  53          }
  54          return old;
  55       };
  56    };
  57 };
  58
  59 #endif