NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.5: NDN, CCN, CCNx, content centric networks
API Documentation
strategy-info-host.hpp
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2014-2019, Regents of the University of California,
4  * Arizona Board of Regents,
5  * Colorado State University,
6  * University Pierre & Marie Curie, Sorbonne University,
7  * Washington University in St. Louis,
8  * Beijing Institute of Technology,
9  * The University of Memphis.
10  *
11  * This file is part of NFD (Named Data Networking Forwarding Daemon).
12  * See AUTHORS.md for complete list of NFD authors and contributors.
13  *
14  * NFD is free software: you can redistribute it and/or modify it under the terms
15  * of the GNU General Public License as published by the Free Software Foundation,
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25 
26 #ifndef NFD_DAEMON_TABLE_STRATEGY_INFO_HOST_HPP
27 #define NFD_DAEMON_TABLE_STRATEGY_INFO_HOST_HPP
28 
29 #include "fw/strategy-info.hpp"
30 
31 namespace nfd {
32 
36 {
37 public:
42  template<typename T>
43  T*
45  {
47  "T must inherit from StrategyInfo");
48 
49  auto it = m_items.find(T::getTypeId());
50  if (it == m_items.end()) {
51  return nullptr;
52  }
53  return static_cast<T*>(it->second.get());
54  }
55 
61  template<typename T, typename ...A>
62  std::pair<T*, bool>
63  insertStrategyInfo(A&&... args)
64  {
66  "T must inherit from StrategyInfo");
67 
68  auto& item = m_items[T::getTypeId()];
69  bool isNew = item == nullptr;
70  if (isNew) {
71  item = make_unique<T>(std::forward<A>(args)...);
72  }
73  return {static_cast<T*>(item.get()), isNew};
74  }
75 
80  template<typename T>
81  size_t
83  {
85  "T must inherit from StrategyInfo");
86 
87  return m_items.erase(T::getTypeId());
88  }
89 
92  void
94  {
95  m_items.clear();
96  }
97 
98 private:
99  std::unordered_map<int, unique_ptr<fw::StrategyInfo>> m_items;
100 };
101 
102 } // namespace nfd
103 
104 #endif // NFD_DAEMON_TABLE_STRATEGY_INFO_HOST_HPP
size_t eraseStrategyInfo()
Erase a StrategyInfo item.
Base class for an entity onto which StrategyInfo items may be placed.
Copyright (c) 2011-2015 Regents of the University of California.
Definition: ndn-common.hpp:39
void clearStrategyInfo()
Clear all StrategyInfo items.
std::pair< T *, bool > insertStrategyInfo(A &&... args)
Insert a StrategyInfo item.
T * getStrategyInfo() const
Get a StrategyInfo item.