forked from cawka/ndn.cxx
diff --git a/disabled/discovery.h b/disabled/discovery.h
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+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013 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>
+ * Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef NDN_DISCOVERY_H
+#define NDN_DISCOVERY_H
+
+#include "ndn.cxx/wrapper.h"
+#include "ndn.cxx/common.h"
+#include "ndn.cxx/name.h"
+
+#include <boost/shared_ptr.hpp>
+#include <boost/function.hpp>
+#include <boost/random/random_device.hpp>
+#include <boost/random/uniform_int_distribution.hpp>
+#include <boost/thread/mutex.hpp>
+#include <boost/thread/locks.hpp>
+#include <list>
+
+class Scheduler;
+typedef boost::shared_ptr<Scheduler> SchedulerPtr;
+
+namespace ndn
+{
+
+class Discovery;
+typedef boost::shared_ptr<Discovery> DiscoveryPtr;
+
+namespace discovery
+{
+
+class TaggedFunction
+{
+public:
+ typedef boost::function<void (const Name &)> Callback;
+ TaggedFunction(const Callback &callback, const std::string &tag = GetRandomTag());
+ ~TaggedFunction(){};
+
+ bool
+ operator==(const TaggedFunction &other) { return m_tag == other.m_tag; }
+
+ void
+ operator()(const Name &name);
+
+private:
+ static const std::string CHAR_SET;
+ static const int DEFAULT_TAG_SIZE = 32;
+
+ static std::string
+ GetRandomTag();
+
+private:
+ Callback m_callback;
+ std::string m_tag;
+};
+
+}
+
+class Discovery
+{
+public:
+ const static double INTERVAL;
+ // Add a callback to be invoked when local prefix changes
+ // you must remember to deregister the callback
+ // otherwise you may have undefined behavior if the callback is
+ // bind to a member function of an object and the object is deleted
+ static void
+ registerCallback(const discovery::TaggedFunction &callback);
+
+ // remember to call this before you quit
+ static void
+ deregisterCallback(const discovery::TaggedFunction &callback);
+
+private:
+ Discovery();
+ ~Discovery();
+
+ void
+ poll();
+
+ void
+ addCallback(const discovery::TaggedFunction &callback);
+
+ int
+ deleteCallback(const discovery::TaggedFunction &callback);
+
+private:
+ typedef boost::mutex Mutex;
+ typedef boost::unique_lock<Mutex> Lock;
+ typedef std::list<discovery::TaggedFunction> List;
+
+ static Discovery *instance;
+ static Mutex mutex;
+ List m_callbacks;
+ SchedulerPtr m_scheduler;
+ Name m_localPrefix;
+};
+
+} // ndn
+
+#endif // NDN_DISCOVERY_H