VolatileBundleStore.cc

// Copyright 2008 Michael Marsh, University of Maryland.
//
// This file is part of pydtn.
//
// pydtn 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.
//
// pydtn 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 pydtn.  If not, see <http://www.gnu.org/licenses/>.
//
// The views and conclusions contained in the software and documentation
// are those of the authors and should not be interpreted as representing
// official policies, either expressed or implied, of the University
// of Maryland.
//
// pydtn extends and embeds the Python interpreter, which is
// Copyright 2001-2006 Python Software Foundation, All Rights Reserved,
// and is released under the PSF License Agreement.
//
// RANLUX random number generation uses the Boost library,
// Copyright 1994-2006 by various authors (details in individual files),
// which is released under the Boost Software License, Version 1.0.

#include "VolatileBundleStore.h"
#include "Node.h"

using namespace DTN;

void
VolatileBundleStore::clean()
{
   // Get the head of the store.
   BundlePointer itr = p_getPointer( BundlePointer() );
   BundlePointer prev; // starts as null
   while ( ! itr.isNull() )
   {
      Bundle* b = itr.repr()->bundle();
      if ( b->expired() )
      {
         itr = prev;
         p_deleteBundle( b );
         m_owner->drop( b, ExpiryDrop::inst );
      }
      prev = itr;
      if ( itr.isNull() )
      {
         itr = p_getPointer( BundlePointer() );
      }
      else
      {
         itr = itr.next();
      }
   }
}

BundlePointer
VolatileBundleStore::addBundle( Bundle* b )
{
   clean();
   return p_addBundle(b);
}

void
VolatileBundleStore::deleteBundle( Bundle* b )
{
   clean();
   p_deleteBundle(b);
}

BundlePointer
VolatileBundleStore::getPointer( const BundlePointer& p )
{
   clean();
   return p_getPointer(p);
}

BundlePointer
VolatileBundleStore::getPointer( const ByteString& sender,
                                 uint32_t seqNum )
{
   clean();
   return p_getPointer(sender,seqNum);
}

bool
VolatileBundleStore::validatePointer( const BundlePointer& p )
{
   clean();
   return p_validatePointer(p);
}

size_t
VolatileBundleStore::bytesUsed( bool cleanup )
{
   if ( cleanup ) clean();
   return p_bytesUsed();
}

size_t
VolatileBundleStore::bundles( bool cleanup )
{
   if ( cleanup ) clean();
   return p_bundles();
}

void
VolatileBundleStore::shrinkStore( size_t s )
{
   clean();
   p_shrinkStore(s);
}

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