Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 1 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
| 2 | /** |
Alexander Afanasyev | 28d586a | 2014-07-10 20:10:54 -0700 | [diff] [blame] | 3 | * Copyright (c) 2014, 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 |
Alexander Afanasyev | 9bcbc7c | 2014-04-06 19:37:37 -0700 | [diff] [blame] | 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, |
| 16 | * either version 3 of the License, or (at your option) any later version. |
| 17 | * |
| 18 | * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
| 19 | * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| 20 | * PURPOSE. See the GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License along with |
| 23 | * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>. |
Alexander Afanasyev | 28d586a | 2014-07-10 20:10:54 -0700 | [diff] [blame] | 24 | */ |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 25 | |
| 26 | #include "pit.hpp" |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 27 | #include <type_traits> |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 28 | |
Alexander Afanasyev | 750fa1c | 2015-01-03 17:28:31 -0800 | [diff] [blame^] | 29 | #include <boost/concept/assert.hpp> |
| 30 | #include <boost/concept_check.hpp> |
| 31 | #include <type_traits> |
| 32 | |
Alexander Afanasyev | 18bbf81 | 2014-01-29 01:40:23 -0800 | [diff] [blame] | 33 | namespace nfd { |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 34 | namespace pit { |
| 35 | |
| 36 | #if HAVE_IS_MOVE_CONSTRUCTIBLE |
| 37 | static_assert(std::is_move_constructible<DataMatchResult>::value, |
| 38 | "DataMatchResult must be MoveConstructible"); |
| 39 | #endif // HAVE_IS_MOVE_CONSTRUCTIBLE |
| 40 | |
| 41 | } // namespace pit |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 42 | |
Alexander Afanasyev | 750fa1c | 2015-01-03 17:28:31 -0800 | [diff] [blame^] | 43 | // http://en.cppreference.com/w/cpp/concept/ForwardIterator |
| 44 | BOOST_CONCEPT_ASSERT((boost::ForwardIterator<Pit::const_iterator>)); |
| 45 | // boost::ForwardIterator follows SGI standard http://www.sgi.com/tech/stl/ForwardIterator.html, |
| 46 | // which doesn't require DefaultConstructible |
| 47 | #ifdef HAVE_IS_DEFAULT_CONSTRUCTIBLE |
| 48 | static_assert(std::is_default_constructible<Pit::const_iterator>::value, |
| 49 | "Pit::const_iterator must be default-constructible"); |
| 50 | #else |
| 51 | BOOST_CONCEPT_ASSERT((boost::DefaultConstructible<Pit::const_iterator>)); |
| 52 | #endif // HAVE_IS_DEFAULT_CONSTRUCTIBLE |
| 53 | |
Junxiao Shi | 30d3599 | 2014-04-03 14:51:58 -0700 | [diff] [blame] | 54 | Pit::Pit(NameTree& nameTree) |
| 55 | : m_nameTree(nameTree) |
| 56 | , m_nItems(0) |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 57 | { |
| 58 | } |
| 59 | |
| 60 | Pit::~Pit() |
| 61 | { |
| 62 | } |
| 63 | |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 64 | std::pair<shared_ptr<pit::Entry>, bool> |
| 65 | Pit::insert(const Interest& interest) |
| 66 | { |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 67 | // first lookup() the Interest Name in the NameTree, which will creates all |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 68 | // the intermedia nodes, starting from the shortest prefix. |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 69 | shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.lookup(interest.getName()); |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 70 | BOOST_ASSERT(static_cast<bool>(nameTreeEntry)); |
| 71 | |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 72 | const std::vector<shared_ptr<pit::Entry>>& pitEntries = nameTreeEntry->getPitEntries(); |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 73 | |
| 74 | // then check if this Interest is already in the PIT entries |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 75 | auto it = std::find_if(pitEntries.begin(), pitEntries.end(), |
| 76 | [&interest] (const shared_ptr<pit::Entry>& entry) { |
| 77 | return entry->getInterest().getName() == interest.getName() && |
| 78 | entry->getInterest().getSelectors() == interest.getSelectors(); |
| 79 | }); |
| 80 | if (it != pitEntries.end()) { |
| 81 | return { *it, false }; |
| 82 | } |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 83 | |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 84 | shared_ptr<pit::Entry> entry = make_shared<pit::Entry>(interest); |
| 85 | nameTreeEntry->insertPitEntry(entry); |
| 86 | m_nItems++; |
| 87 | return { entry, true }; |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 88 | } |
| 89 | |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 90 | pit::DataMatchResult |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 91 | Pit::findAllDataMatches(const Data& data) const |
| 92 | { |
Junxiao Shi | 2b73ca3 | 2014-11-17 19:16:08 -0700 | [diff] [blame] | 93 | auto&& ntMatches = m_nameTree.findAllMatches(data.getName(), |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 94 | [] (const name_tree::Entry& entry) { return entry.hasPitEntries(); }); |
Junxiao Shi | 2b73ca3 | 2014-11-17 19:16:08 -0700 | [diff] [blame] | 95 | |
| 96 | pit::DataMatchResult matches; |
| 97 | for (const name_tree::Entry& nte : ntMatches) { |
| 98 | for (const shared_ptr<pit::Entry>& pitEntry : nte.getPitEntries()) { |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 99 | if (pitEntry->getInterest().matchesData(data)) |
| 100 | matches.emplace_back(pitEntry); |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 101 | } |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 102 | } |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 103 | |
Junxiao Shi | b2bcbcd | 2014-11-08 09:30:28 -0700 | [diff] [blame] | 104 | return matches; |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | void |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 108 | Pit::erase(shared_ptr<pit::Entry> pitEntry) |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 109 | { |
Junxiao Shi | 9f7455b | 2014-04-07 21:02:16 -0700 | [diff] [blame] | 110 | shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.get(*pitEntry); |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 111 | BOOST_ASSERT(static_cast<bool>(nameTreeEntry)); |
| 112 | |
Junxiao Shi | 9f7455b | 2014-04-07 21:02:16 -0700 | [diff] [blame] | 113 | nameTreeEntry->erasePitEntry(pitEntry); |
| 114 | m_nameTree.eraseEntryIfEmpty(nameTreeEntry); |
Haowei Yuan | 78c84d1 | 2014-02-27 15:35:13 -0600 | [diff] [blame] | 115 | |
Junxiao Shi | 9f7455b | 2014-04-07 21:02:16 -0700 | [diff] [blame] | 116 | --m_nItems; |
Junxiao Shi | cbba04c | 2014-01-26 14:21:22 -0700 | [diff] [blame] | 117 | } |
| 118 | |
Alexander Afanasyev | 750fa1c | 2015-01-03 17:28:31 -0800 | [diff] [blame^] | 119 | Pit::const_iterator |
| 120 | Pit::begin() const |
| 121 | { |
| 122 | return const_iterator(m_nameTree.fullEnumerate( |
| 123 | [] (const name_tree::Entry& entry) { return entry.hasPitEntries(); }).begin()); |
| 124 | } |
| 125 | |
Alexander Afanasyev | 18bbf81 | 2014-01-29 01:40:23 -0800 | [diff] [blame] | 126 | } // namespace nfd |