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Unified Diff: src/stats/model/time-averaging-collector.cc

Issue 245260043: DCF collectors
Patch Set: Created 8 years, 9 months ago
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Index: src/stats/model/time-averaging-collector.cc
===================================================================
new file mode 100644
--- /dev/null
+++ b/src/stats/model/time-averaging-collector.cc
@@ -0,0 +1,158 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2015 Bucknell University
+ *
+ * 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: Li Li (ll024@bucknell.edu)
+ */
+
+#include "ns3/object.h"
+#include "ns3/log.h"
+#include "ns3/simulator.h"
+#include "ns3/time-averaging-collector.h"
+
+NS_LOG_COMPONENT_DEFINE ("TimeAveragingCollector");
+
+namespace ns3 {
+
+NS_OBJECT_ENSURE_REGISTERED (TimeAveragingCollector);
+
+TypeId
+TimeAveragingCollector::GetTypeId (void)
+{
+ static TypeId tid = TypeId ("ns3::TimeAveragingCollector")
+ .SetParent<Collector> ()
+ .AddConstructor<TimeAveragingCollector> ()
+ .AddAttribute ("Period",
+ "The period in seconds between reports",
+ TimeValue (Seconds (1.0)),
+ MakeTimeAccessor (&TimeAveragingCollector::SetPeriod,
+ &TimeAveragingCollector::GetPeriod),
+ MakeTimeChecker ())
+ .AddTraceSource ("Output",
+ "The double value received by the trace sink",
+ MakeTraceSourceAccessor (&TimeAveragingCollector::m_output),
+ "ns3::DataCollectionObject::CollectorTraceCallback")
+ ;
+ return tid;
+}
+
+TimeAveragingCollector::TimeAveragingCollector ()
+ : Collector (),
+ m_doubleValue (0),
+ m_hasReportBeenScheduled (false),
+ m_batchCount (0)
+{
+ NS_LOG_FUNCTION (this);
+}
+
+TimeAveragingCollector::~TimeAveragingCollector ()
+{
+ NS_LOG_FUNCTION (this);
+}
+
+void
+TimeAveragingCollector::ReportData (void)
+{
+ NS_LOG_FUNCTION (this);
+ if (!IsEnabled ())
+ {
+ return;
+ }
+ double time = Simulator::Now ().GetSeconds ();
+ // output the data downstream
+ m_output (time, m_doubleValue);
+
+ // clear the batch count
+ m_batchCount = 0;
+
+ m_reportEventId = Simulator::Schedule (m_period, &TimeAveragingCollector::ReportData, this);
buherman 2015/06/29 08:53:54 If m_period is 0, the simulation will run indefini
+ m_hasReportBeenScheduled = true;
+}
+
+void
+TimeAveragingCollector::TraceSinkDouble (double oldValue, double newValue)
+{
+ NS_LOG_FUNCTION (this << oldValue << newValue);
+ if (!IsEnabled ())
+ {
+ NS_LOG_DEBUG ("Collector not enabled");
+ return;
+ }
+
+
+ // keep track of the average value
+ m_doubleValue = (m_doubleValue * m_batchCount + newValue) / (m_batchCount + 1);
+
+ // increment the batch count
+ m_batchCount++;
+}
+
+void
+TimeAveragingCollector::SetPeriod (Time period)
+{
+ m_period = period;
+ PeriodChanged ();
+ NS_LOG_DEBUG ("TimeAveragingCollector " << this << " period changed");
+}
+
+Time
+TimeAveragingCollector::GetPeriod () const
+{
+ NS_LOG_FUNCTION (this);
+ return m_period;
+}
+
+void
+TimeAveragingCollector::PeriodChanged (void)
+{
+ NS_LOG_FUNCTION (this);
+ if (m_hasReportBeenScheduled)
+ {
+ Simulator::Cancel (m_reportEventId);
+ m_hasReportBeenScheduled = false;
+ NS_LOG_DEBUG ("TimeAveragingCollector " << this << " data report has been cancelled");
+ }
+
+ if (!IsEnabled ())
+ {
+ return;
+ }
+
+ m_batchCount = 0;
+ m_doubleValue = 0;
+ m_reportEventId = Simulator::Schedule (m_period, &TimeAveragingCollector::ReportData, this);
+ m_hasReportBeenScheduled = true;
+ NS_LOG_DEBUG ("TimeAveragingCollector " << this << " data report has been scheduled");
+}
+
+// Override DataCollectionObject::Enable() to schedule the very first event
+// whenever the collector is enabled
+void
+TimeAveragingCollector::Enable (void)
+{
+ DataCollectionObject::Enable ();
+ if (m_hasReportBeenScheduled)
+ {
+ Simulator::Cancel (m_reportEventId);
+ m_hasReportBeenScheduled = false;
+ NS_LOG_DEBUG ("TimeAveragingCollector " << this << " data report has been cancelled");
+ }
+
+ m_reportEventId = Simulator::Schedule (m_period, &TimeAveragingCollector::ReportData, this);
+ m_hasReportBeenScheduled = true;
+}
+
+} // namespace ns3

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