NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.0: NDN, CCN, CCNx, content centric networks
API Documentation
lru-policy.hpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
20 #ifndef LRU_POLICY_H_
21 #define LRU_POLICY_H_
22 
24 
25 #include <boost/intrusive/options.hpp>
26 #include <boost/intrusive/list.hpp>
27 
28 namespace ns3 {
29 namespace ndn {
30 namespace ndnSIM {
31 
35 struct lru_policy_traits {
37  static std::string
38  GetName()
39  {
40  return "Lru";
41  }
42 
43  struct policy_hook_type : public boost::intrusive::list_member_hook<> {
44  };
45 
46  template<class Container>
47  struct container_hook {
48  typedef boost::intrusive::member_hook<Container, policy_hook_type, &Container::policy_hook_>
49  type;
50  };
51 
52  template<class Base, class Container, class Hook>
53  struct policy {
54  typedef typename boost::intrusive::list<Container, Hook> policy_container;
55 
56  // could be just typedef
57  class type : public policy_container {
58  public:
59  typedef Container parent_trie;
60 
61  type(Base& base)
62  : base_(base)
63  , max_size_(100)
64  {
65  }
66 
67  inline void
68  update(typename parent_trie::iterator item)
69  {
70  // do relocation
71  policy_container::splice(policy_container::end(), *this,
72  policy_container::s_iterator_to(*item));
73  }
74 
75  inline bool
76  insert(typename parent_trie::iterator item)
77  {
78  if (max_size_ != 0 && policy_container::size() >= max_size_) {
79  base_.erase(&(*policy_container::begin()));
80  }
81 
82  policy_container::push_back(*item);
83  return true;
84  }
85 
86  inline void
87  lookup(typename parent_trie::iterator item)
88  {
89  // do relocation
90  policy_container::splice(policy_container::end(), *this,
91  policy_container::s_iterator_to(*item));
92  }
93 
94  inline void
95  erase(typename parent_trie::iterator item)
96  {
97  policy_container::erase(policy_container::s_iterator_to(*item));
98  }
99 
100  inline void
101  clear()
102  {
103  policy_container::clear();
104  }
105 
106  inline void
107  set_max_size(size_t max_size)
108  {
109  max_size_ = max_size;
110  }
111 
112  inline size_t
113  get_max_size() const
114  {
115  return max_size_;
116  }
117 
118  private:
119  type()
120  : base_(*((Base*)0)){};
121 
122  private:
123  Base& base_;
124  size_t max_size_;
125  };
126  };
127 };
128 
129 } // ndnSIM
130 } // ndn
131 } // ns3
132 
134 
135 #endif
Copyright (c) 2011-2015 Regents of the University of California.
Table::const_iterator iterator
Definition: cs-internal.hpp:41
Copyright (c) 2011-2015 Regents of the University of California.