NS-3 based Named Data Networking (NDN) simulator
ndnSIM: NDN, CCN, CCNx, content centric networks
API Documentation
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Groups Pages
counting-policy.h
1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2011 University of California, Los Angeles
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
19  */
20 
21 #ifndef COUNTING_POLICY_H_
22 #define COUNTING_POLICY_H_
23 
24 #include <boost/intrusive/options.hpp>
25 #include <boost/intrusive/list.hpp>
26 
27 namespace ns3 {
28 namespace ndn {
29 namespace ndnSIM {
30 
36 {
38  static std::string GetName () { return "Counting"; }
39 
40  struct policy_hook_type : public boost::intrusive::list_member_hook<> {};
41 
42  template<class Container>
44  {
45  // could be class/struct implementation
46  typedef boost::intrusive::member_hook< Container,
48  &Container::policy_hook_ > type;
49  };
50 
51  template<class Base,
52  class Container,
53  class Hook>
54  struct policy
55  {
56  typedef typename boost::intrusive::list< Container, Hook > policy_container;
57 
58  // could be just typedef
59  class type : public policy_container
60  {
61  public:
62  typedef Container parent_trie;
63 
64  type (Base &base)
65  : base_ (base)
66  {
67  }
68 
69  inline void
70  update (typename parent_trie::iterator item)
71  {
72  // do nothing
73  }
74 
75  inline bool
76  insert (typename parent_trie::iterator item)
77  {
78  policy_container::push_back (*item);
79  return true;
80  }
81 
82  inline void
83  lookup (typename parent_trie::iterator item)
84  {
85  // do nothing
86  }
87 
88  inline void
89  erase (typename parent_trie::iterator item)
90  {
91  policy_container::erase (policy_container::s_iterator_to (*item));
92  }
93 
94  inline void
95  clear ()
96  {
97  policy_container::clear ();
98  }
99 
100  private:
101  type () : base_(*((Base*)0)) { };
102 
103  private:
104  Base &base_;
105  };
106  };
107 };
108 
109 } // ndnSIM
110 } // ndn
111 } // ns3
112 
113 #endif // COUNTING_POLICY_H_
static std::string GetName()
Name that can be used to identify the policy (for NS-3 object model and logging)
Traits for policy that just keeps track of number of elements It's doing a rather expensive job...