core: Basic implementation of Scheduler
refs #1119 (http://redmine.named-data.net/issues/1119)
Change-Id: I1783857452941794a2538534d3492d30ac58dd25
diff --git a/daemon/core/monotonic_deadline_timer.hpp b/daemon/core/monotonic_deadline_timer.hpp
new file mode 100644
index 0000000..543cd7a
--- /dev/null
+++ b/daemon/core/monotonic_deadline_timer.hpp
@@ -0,0 +1,61 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (C) 2014 Named Data Networking Project
+ * See COPYING for copyright and distribution information.
+ */
+
+/**
+ * This code is based on https://svn.boost.org/trac/boost/attachment/ticket/3504/MonotonicDeadlineTimer.h
+ */
+
+#ifndef NFD_CORE_MONOTONIC_DEADLINE_TIMER_HPP
+#define NFD_CORE_MONOTONIC_DEADLINE_TIMER_HPP
+
+#include "time.hpp"
+
+namespace boost {
+namespace asio {
+
+template <>
+struct time_traits<ndn::time::monotonic_clock>
+{
+ typedef ndn::time::Point time_type;
+ typedef ndn::time::Duration duration_type;
+
+ static time_type
+ now()
+ {
+ return ndn::time::now();
+ }
+
+ static time_type
+ add(const time_type& time, const duration_type& duration)
+ {
+ return time + duration;
+ }
+
+ static duration_type
+ subtract(const time_type& timeLhs, const time_type& timeRhs)
+ {
+ return timeLhs - timeRhs;
+ }
+
+ static bool
+ less_than(const time_type& timeLhs, const time_type& timeRhs)
+ {
+ return timeLhs < timeRhs;
+ }
+
+ static boost::posix_time::time_duration
+ to_posix_duration(const duration_type& duration)
+ {
+ return boost::posix_time::microseconds(duration/1000);
+ }
+};
+
+typedef basic_deadline_timer<ndn::time::monotonic_clock> monotonic_deadline_timer;
+
+} // namespace asio
+} // namespace boost
+
+#endif // NFD_CORE_MONOTONIC_DEADLINE_TIMER_HPP