in correspondence to NoPhantomData added PODPhantomData

src/blockforest/loadbalancing/PODPhantomData.h

+//======================================================================================================================
+//
+//  This file is part of waLBerla. waLBerla is free software: you can
+//  redistribute it and/or modify it under the terms of the GNU General Public
+//  License as published by the Free Software Foundation, either version 3 of
+//  the License, or (at your option) any later version.
+//
+//  waLBerla is distributed in the hope that it will be useful, but WITHOUT
+//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+//  for more details.
+//
+//  You should have received a copy of the GNU General Public License along
+//  with waLBerla (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file PODPhantomData.h
+//! \ingroup blockforest
+//! \author Sebastian Eibl <sebastian.eibl@fau.de>
+//
+//======================================================================================================================
+
+#pragma once
+
+#include "blockforest/PhantomBlock.h"
+#include "core/DataTypes.h"
+#include "core/mpi/RecvBuffer.h"
+#include "core/mpi/SendBuffer.h"
+
+
+namespace walberla {
+namespace blockforest {
+
+template <typename T>
+class PODPhantomWeight
+{
+public:
+
+   typedef T weight_t;
+
+   PODPhantomWeight( const T _weight ) : weight_( _weight ) {}
+
+   T weight() const { return weight_; }
+
+private:
+   T weight_;
+};
+
+template <typename T>
+struct PODPhantomWeightPackUnpack
+{
+   void operator()( mpi::SendBuffer & buffer, const PhantomBlock & block )
+   {
+      buffer << block.getData< PODPhantomWeight<T> >().weight();
+   }
+
+   void operator()( mpi::RecvBuffer & buffer, const PhantomBlock &, boost::any & data )
+   {
+      typename PODPhantomWeight<T>::weight_t w;
+      buffer >> w;
+      data = PODPhantomWeight<T>( w );
+   }
+};
+
+
+} // namespace blockforest
+} // namespace walberla