Initial steps in stats tree building. Almost done, but something is fishy
diff --git a/utils/load-stats-node.h b/utils/load-stats-node.h
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+/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef LOAD_STATS_NODE_H
+#define LOAD_STATS_NODE_H
+
+#include "load-stats-face.h"
+#include <map>
+#include "ns3/ptr.h"
+
+namespace ns3
+{
+class CcnxFace;
+}
+
+namespace ndnSIM
+{
+
+// this thing is actually put into a tree node, associated with each "name entry"
+
+class LoadStatsNode
+{
+public:
+  typedef std::map< ns3::Ptr<ns3::CcnxFace>, LoadStatsFace > stats_container;
+
+  LoadStatsNode () {}
+  LoadStatsNode (const LoadStatsNode &) {}
+
+  void
+  Step ();
+
+  /**
+   * Increment face-independent counter
+   */
+  void
+  NewPitEntry ();
+  
+  /**
+   * Increment counter to incoming list
+   */
+  void
+  AddIncoming (ns3::Ptr<ns3::CcnxFace> face);
+
+  /**
+   * Increment counter to outgoing list
+   */
+  void
+  AddOutgoing (ns3::Ptr<ns3::CcnxFace> face);
+
+  /**
+   * Increment counter to both incoming and outgoing lists, for all faces
+   */
+  void
+  Satisfy ();
+
+  /**
+   * Increment counter to both incoming and outgoing lists, for all faces
+   */
+  void
+  Timeout ();
+
+  LoadStatsNode &
+  operator += (const LoadStatsNode &stats);
+
+  inline const stats_container &
+  incoming () const;
+  
+  inline const stats_container &
+  outgoing () const;
+
+  inline const LoadStatsFace &
+  pit () const;
+
+  bool
+  operator == (const LoadStatsNode &other) const
+  {
+    return false;
+  }
+
+  bool
+  operator != (const LoadStatsNode &other) const
+  {
+    return true;
+  }
+
+  LoadStatsNode &
+  operator = (const LoadStatsNode &other)
+  {
+    // don't do any copying at all
+    return *this;
+  }
+  
+private:
+  LoadStatsFace   m_pit;
+  stats_container m_incoming;
+  stats_container m_outgoing;
+
+  friend std::ostream&
+  operator << (std::ostream &os, const LoadStatsNode &node);
+};
+
+inline const LoadStatsNode::stats_container &
+LoadStatsNode::incoming () const
+{
+  return m_incoming;
+}
+  
+inline const LoadStatsNode::stats_container &
+LoadStatsNode::outgoing () const
+{
+  return m_outgoing;
+}
+
+inline const LoadStatsFace &
+LoadStatsNode::pit () const
+{
+  return m_pit;
+}
+
+std::ostream&
+operator << (std::ostream &os, const LoadStatsNode &node);
+
+}
+
+#endif