hacked TimelineSvc to spit out a manageable csv file

GaudiHive/src/TimelineSvc.cpp

@@ -3,6 +3,7 @@
 #include "GaudiKernel/StatusCode.h"
 
 #include <fstream>
+#include <functional>
 
 StatusCode TimelineSvc::initialize() {
   StatusCode sc = Service::initialize();
@@ -66,8 +67,10 @@ ITimelineSvc::TimelineRecorder TimelineSvc::getRecorder( std::string alg, const
 bool TimelineSvc::getTimelineEvent( TimelineEvent& e ) const {
   for ( const auto& candidate : m_events ) {
     if ( candidate.algorithm == e.algorithm && candidate.event == e.event ) {
-      e = candidate;
-      return true;
+      if(e.event % m_receverynthevent == 0 && (m_algos.empty() || std::find(m_algos.begin(), m_algos.end(), e.algorithm) != m_algos.end())){
+        e = candidate;
+        return true;
+      }
     }
   }
   return false;
@@ -78,11 +81,11 @@ void TimelineSvc::outputTimeline() {
 
   out << "#start end algorithm thread slot event" << std::endl;
 
-  for ( const auto& e : m_events ) {
-    out << std::chrono::duration_cast<std::chrono::nanoseconds>( e.start.time_since_epoch() ).count() << " "
-        << std::chrono::duration_cast<std::chrono::nanoseconds>( e.end.time_since_epoch() ).count() << " "
-        << e.algorithm << " " << e.thread << " " << e.slot << " " << e.event << std::endl;
-  }
+  for ( const auto& e : m_events )
+    if(e.event % m_receverynthevent == 0 && (m_algos.empty() || std::find(m_algos.begin(), m_algos.end(), e.algorithm) != m_algos.end()))
+      out << std::chrono::duration_cast<std::chrono::microseconds>( e.start.time_since_epoch() ).count() << " "
+          << std::chrono::duration_cast<std::chrono::microseconds>( e.end.time_since_epoch() ).count() << " "
+          << e.algorithm << " " << e.thread << " " << e.slot << " " << e.event << std::endl;
 
   out.close();
 }

GaudiHive/src/TimelineSvc.h

@@ -25,10 +25,12 @@ public:
 private:
   void outputTimeline();
 
-  Gaudi::Property<std::string> m_timelineFile{this, "TimelineFile", "timeline.csv", ""};
-  Gaudi::Property<bool>        m_isEnabled{this, "RecordTimeline", false, "Enable recording of the timeline events"};
-  Gaudi::Property<bool>        m_dumpTimeline{this, "DumpTimeline", false, "Enable dumping of the timeline events"};
-  Gaudi::Property<bool>        m_partial{this, "Partial", false, ""};
+  Gaudi::Property<std::string>              m_timelineFile{this, "TimelineFile", "timeline.csv", ""};
+  Gaudi::Property<bool>                     m_isEnabled{this, "RecordTimeline", false, "Enable recording of the timeline events"};
+  Gaudi::Property<bool>                     m_dumpTimeline{this, "DumpTimeline", false, "Enable dumping of the timeline events"};
+  Gaudi::Property<int>                      m_receverynthevent{this, "RecordEveryNthEntry", 1, "Only record every nth event"};
+  Gaudi::Property<std::vector<std::string>> m_algos{this, "RecordedAlgorithms",std::vector<std::string>{}, "Whitelist of algorithms"};
+  Gaudi::Property<bool>                     m_partial{this, "Partial", false, ""};
 
   tbb::concurrent_vector<TimelineEvent> m_events;
 };