Adding implementation of Interest Queue

Change-Id: I4a11db79053e69a19ceba0e0501b93911131d3a2
Refs: #3612
diff --git a/src/interest-queue.cpp b/src/interest-queue.cpp
new file mode 100644
index 0000000..062e222
--- /dev/null
+++ b/src/interest-queue.cpp
@@ -0,0 +1,43 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+* Copyright (c) 2016 Regents of the University of California.
+*
+* This file is part of the nTorrent codebase.
+*
+* nTorrent is free software: you can redistribute it and/or modify it under the
+* terms of the GNU Lesser General Public License as published by the Free Software
+* Foundation, either version 3 of the License, or (at your option) any later version.
+*
+* nTorrent 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 Lesser General Public License for more details.
+*
+* You should have received copies of the GNU General Public License and GNU Lesser
+* General Public License along with nTorrent, e.g., in COPYING.md file. If not, see
+* <http://www.gnu.org/licenses/>.
+*
+* See AUTHORS for complete list of nTorrent authors and contributors.
+*/
+
+#include "interest-queue.hpp"
+
+namespace ndn {
+namespace ntorrent {
+
+void
+InterestQueue::push(shared_ptr<Interest> interest, DataCallback dataReceivedCallback,
+     TimeoutCallback dataFailedCallback)
+{
+  m_queue.push(std::make_tuple(interest, dataReceivedCallback, dataFailedCallback));
+}
+
+queueTuple
+InterestQueue::pop()
+{
+  queueTuple tup = m_queue.front();
+  m_queue.pop();
+  return tup;
+}
+
+} // namespace ntorrent
+} // namespace ndn