added block for measuring round trip times.

lib/rtt_measure_impl.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2013 Christoph Leitner <c.leitner@student.uibk.ac.at>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef INCLUDED_FOO_RTT_MEASURE_IMPL_H
+#define INCLUDED_FOO_RTT_MEASURE_IMPL_H
+
+#include <foo/rtt_measure.h>
+#include <atomic>
+namespace gr {
+namespace foo {
+	class rtt_measure_impl : public rtt_measure {
+		private:
+			unsigned long d_interval;
+			std::atomic_bool d_stop;
+			boost::posix_time::ptime d_start_time;
+			gr::thread::mutex d_mutex;
+			gr::thread::thread d_thread;
+			gr::thread::condition_variable d_msg_received;
+		public:
+			rtt_measure_impl(unsigned long interval);
+			~rtt_measure_impl();
+			void run();
+			int general_work(int noutput, gr_vector_int& ninput_items,
+					gr_vector_const_void_star& input_items,
+					gr_vector_void_star& output_items );
+			boost::posix_time::ptime start_time();
+	};
+}
+}
+
+#endif