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+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2012 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Zhenkai Zhu <zhenkai@cs.ucla.edu>
+ * 卞超轶 Chaoyi Bian <bcy@pku.edu.cn>
+ * Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef SYNC_STATE_LEAF_CONTAINER
+#define SYNC_STATE_LEAF_CONTAINER
+
+#include <boost/multi_index_container.hpp>
+// #include <boost/multi_index/tag.hpp>
+// #include <boost/multi_index/ordered_index.hpp>
+// #include <boost/multi_index/composite_key.hpp>
+#include <boost/multi_index/hashed_index.hpp>
+// #include <boost/multi_index/random_access_index.hpp>
+// #include <boost/multi_index/member.hpp>
+#include <boost/multi_index/mem_fun.hpp>
+
+namespace mi = boost::multi_index;
+
+namespace ns3 {
+namespace Sync {
+
+/**
+ * \ingroup sync
+ * @brief Container for SYNC leaves
+ */
+struct LeafContainer : public mi::multi_index_container<
+ LeafPtr,
+ mi::indexed_by<
+ // For fast access to elements using NameInfo
+ mi::hashed_unique<
+ mi::const_mem_fun<Leaf, const NameInfo&, &Leaf::getInfo>,
+ LeafHash (),
+ LeafEqual ()
+ >
+ >
+ >
+{
+};
+
+} // Sync
+} // ns3
+
+#endif // SYNC_STATE_LEAF_CONTAINER