Some progress on CcnxPit. Partially working
diff --git a/utils/persistent-policy.h b/utils/persistent-policy.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 PERSISTENT_POLICY_H_
+#define PERSISTENT_POLICY_H_
+
+#include <boost/intrusive/options.hpp>
+#include <boost/intrusive/list.hpp>
+
+namespace ndnSIM
+{
+
+/**
+ * @brief Traits for persistent replacement policy
+ *
+ * In this policy entries are added until there is a space (controlled by set_max_size call).
+ * If maximum is reached, new entries will not be added and nothing will be removed from the container
+ */
+struct persistent_policy_traits
+{
+ struct policy_hook_type : public boost::intrusive::list_member_hook<> {};
+
+ template<class Container>
+ struct container_hook
+ {
+ typedef boost::intrusive::member_hook< Container,
+ policy_hook_type,
+ &Container::policy_hook_ > type;
+ };
+
+ template<class Base,
+ class Container,
+ class Hook>
+ struct policy
+ {
+ typedef typename boost::intrusive::list< Container, Hook > policy_container;
+
+ // could be just typedef
+ class type : public policy_container
+ {
+ public:
+ typedef Container parent_trie;
+
+ type (Base &base)
+ : base_ (base)
+ , max_size_ (100) // when 0, policy is not enforced
+ {
+ }
+
+ inline void
+ update (typename parent_trie::iterator item)
+ {
+ // do nothing
+ }
+
+ inline bool
+ insert (typename parent_trie::iterator item)
+ {
+ if (max_size_ != 0 && policy_container::size () >= max_size_)
+ return false;
+
+ policy_container::push_back (*item);
+ return true;
+ }
+
+ inline void
+ lookup (typename parent_trie::iterator item)
+ {
+ // do nothing
+ }
+
+ inline void
+ erase (typename parent_trie::iterator item)
+ {
+ policy_container::erase (policy_container::s_iterator_to (*item));
+ }
+
+ inline void
+ clear ()
+ {
+ policy_container::clear ();
+ }
+
+ inline void
+ set_max_size (size_t max_size)
+ {
+ max_size_ = max_size;
+ }
+
+ inline size_t
+ get_max_size () const
+ {
+ return max_size_;
+ }
+
+ private:
+ // type () : base_(*((Base*)0)) { };
+
+ private:
+ Base &base_;
+ size_t max_size_;
+ };
+ };
+};
+
+} // ndnSIM
+
+#endif // PERSISTENT_POLICY_H_