removed updateTotals() method. Replaced it with costless on-the-fly update of totals

retroshare-gui/src/gui/MainWindow.cpp

@@ -196,7 +196,7 @@ MainWindow::MainWindow(QWidget* parent, Qt::WindowFlags flags)
     this->setWindowIcon(QIcon(QString::fromUtf8(":/icons/logo_128.png")));
 
     /* Create all the dialogs of which we only want one instance */
-    _bandwidthGraph = new BandwidthGraph();
+    _bandwidthGraph = NULL ;
 
     #ifdef UNFINISHED
     applicationWindow = new ApplicationWindow();
@@ -559,7 +559,7 @@ void MainWindow::createTrayIcon()
 #ifdef ENABLE_WEBUI
     trayMenu->addAction(QIcon(":/images/emblem-web.png"), tr("Show web interface"), this, SLOT(showWebinterface()));
 #endif // ENABLE_WEBUI
-    trayMenu->addAction(QIcon(IMAGE_BWGRAPH), tr("Bandwidth Graph"), _bandwidthGraph, SLOT(showWindow()));
+    trayMenu->addAction(QIcon(IMAGE_BWGRAPH), tr("Bandwidth Graph"), this, SLOT(showBandwidthGraph()));
     trayMenu->addAction(QIcon(IMAGE_DHT), tr("Statistics"), this, SLOT(showStatisticsWindow()));
 
 
@@ -585,6 +585,14 @@ void MainWindow::createTrayIcon()
     trayIcon->show();
 }
 
+void MainWindow::showBandwidthGraph()
+{
+	if(_bandwidthGraph == NULL)
+		_bandwidthGraph = new BandwidthGraph();
+
+	_bandwidthGraph->showWindow();
+}
+
 void MainWindow::createNotifyIcons()
 {
     /* create notify icons */

retroshare-gui/src/gui/MainWindow.h

@@ -198,6 +198,7 @@ public slots:
     //! Go to a specific part of the control panel.
     void setNewPage(int page);
     void setCompactStatusMode(bool compact);
+    void showBandwidthGraph();
 
     void toggleStatusToolTip(bool toggle);
 protected:

retroshare-gui/src/gui/common/RSGraphWidget.cpp

@@ -102,8 +102,8 @@ QString RSGraphSource::displayValue(float v) const
 
 void RSGraphSource::getCumulatedValues(std::vector<float>& vals) const
 {
-    for(std::map<std::string,float>::const_iterator it = _totals.begin();it!=_totals.end();++it)
-        vals.push_back(it->second) ;
+    for(std::map<std::string,ZeroInitFloat>::const_iterator it = _totals.begin();it!=_totals.end();++it)
+        vals.push_back(it->second.v) ;
 }
 void RSGraphSource::getCurrentValues(std::vector<QPointF>& vals) const
 {
@@ -196,10 +196,15 @@ void RSGraphSource::update()
 
         lst.push_back(std::make_pair(ms,it->second)) ;
 
-        for(std::list<std::pair<qint64,float> >::iterator it2=lst.begin();it2!=lst.end();)
+        float& total ( _totals[it->first].v );
+
+		total += it->second ;
+
+        for(std::list<std::pair<qint64,float> >::iterator it2=lst.begin();it2!=lst.end();) // This loop should be very fast, since we only remove the first elements, if applicable.
             if( ms - (*it2).first > _time_limit_msecs)
             {
                 //std::cerr << "  removing old value with time " << (*it).first/1000.0f << std::endl;
+				total -= (*it2).second ;
                 it2 = lst.erase(it2) ;
             }
             else
@@ -213,30 +218,31 @@ void RSGraphSource::update()
 		{
 			std::map<std::string,std::list<std::pair<qint64,float> > >::iterator tmp(it) ;
 			++tmp;
+			_totals.erase(it->first) ;
 			_points.erase(it) ;
 			it=tmp ;
 		}
         else
             ++it ;
-
-    updateTotals();
 }
 
+#ifdef TO_REMOVE
 void RSGraphSource::updateTotals()
 {
+	std::cerr << "RsGraphSource::updateTotals() for " << _points.size() << " values" << std::endl;
     // now compute totals
 
     _totals.clear();
 
     for(std::map<std::string,std::list<std::pair<qint64,float> > >::const_iterator it(_points.begin());it!=_points.end();++it)
     {
-        float& f = _totals[it->first] ;
+        float& f = _totals[it->first].v ;
 
-        f = 0.0f ;
         for(std::list<std::pair<qint64,float> >::const_iterator it2=it->second.begin();it2!=it->second.end();++it2)
 			f += (*it2).second ;
     }
 }
+#endif
 
 void RSGraphSource::reset()
 {

retroshare-gui/src/gui/common/RSGraphWidget.h

@@ -43,6 +43,17 @@
 #define RSDHT_COLOR   Qt::magenta
 #define ALLDHT_COLOR  Qt::yellow
 
+struct ZeroInitFloat
+{
+	ZeroInitFloat() { v=0; }
+	ZeroInitFloat(float f) { v=f; }
+
+	float operator()() const { return v ; }
+	float& operator()() { return v ; }
+
+	float v ;
+};
+
 // This class provides a source value that the graph can retrieve on demand.
 // In order to use your own source, derive from RSGraphSource and overload the value() method.
 //
@@ -102,13 +113,15 @@ protected slots:
 protected:
     virtual void getValues(std::map<std::string,float>& values) const = 0 ;// overload this in your own class to fill in the values you want to display.
 
+#ifdef TO_REMOVE
 	void updateTotals();
+#endif
     qint64 getTime() const ;						   // returns time in ms since RS has started
 
     // Storage of collected events. The string is any string used to represent the collected data.
 
     std::map<std::string, std::list<std::pair<qint64,float> > > _points ;
-    std::map<std::string, float> _totals ;
+    std::map<std::string, ZeroInitFloat> _totals ;
 
     QTimer *_timer ;
 

retroshare-gui/src/gui/statistics/BWGraph.cpp

@@ -88,12 +88,17 @@ void BWGraphSource::update()
 
         lst.push_back(std::make_pair(ms,it->second)) ;
 
+		float& total(_totals[it->first].v) ;
+
+		total += it->second ;
+
         unused_vals.erase(it->first) ;
 
         for(std::list<std::pair<qint64,float> >::iterator it2=lst.begin();it2!=lst.end();)
             if( ms - (*it2).first > _time_limit_msecs)
             {
                 //std::cerr << "  removing old value with time " << (*it).first/1000.0f << std::endl;
+				total -=(*it2).second ;
                 it2 = lst.erase(it2) ;
             }
             else
@@ -114,6 +119,7 @@ void BWGraphSource::update()
 		{
 			std::map<std::string,std::list<std::pair<qint64,float> > >::iterator tmp(it) ;
 			++tmp;
+			_totals.erase(it->first) ;
 			_points.erase(it) ;
 			it=tmp ;
 		}
@@ -147,19 +153,31 @@ void BWGraphSource::update()
                 break ;
     }
 
+	_total_duration_seconds = duration/1000.0 ;
+
     // now update the totals, and possibly convert into an average if the unit requires it.
 
-    updateTotals();
+    // updateTotals();
 
-    if(_current_unit == UNIT_KILOBYTES)
-        for(std::map<std::string,float>::iterator it(_totals.begin());it!=_totals.end();++it)
-            it->second /= (duration/1000.0) ;
+    // if(_current_unit == UNIT_KILOBYTES)
+    //     for(std::map<std::string,ZeroInitFloat>::iterator it(_totals.begin());it!=_totals.end();++it)
+    //         it->second.v /= (duration/1000.0) ;
 
 #ifdef BWGRAPH_DEBUG
     std::cerr << "Traffic history has size " << mTrafficHistory.size() << std::endl;
 #endif
 }
 
+void BWGraphSource::getCumulatedValues(std::vector<float>& vals) const
+{
+	if(_current_unit == UNIT_KILOBYTES && _total_duration_seconds > 0.0)
+		for(std::map<std::string,ZeroInitFloat>::const_iterator it = _totals.begin();it!=_totals.end();++it)
+			vals.push_back(it->second.v/_total_duration_seconds) ;
+	else
+		for(std::map<std::string,ZeroInitFloat>::const_iterator it = _totals.begin();it!=_totals.end();++it)
+			vals.push_back(it->second.v) ;
+}
+
 std::string BWGraphSource::makeSubItemName(uint16_t service_id,uint8_t sub_item_type) const
 {
     RsServiceInfoWithNames& s(mServiceInfoMap[service_id]) ;

retroshare-gui/src/gui/statistics/BWGraph.h

@@ -32,6 +32,7 @@ public:
 
     // re-derived from RSGraphSource
 
+	virtual void getCumulatedValues(std::vector<float>& vals) const;
     virtual void getValues(std::map<std::string,float>& values) const;
     virtual QString displayValue(float v) const;
     virtual QString legend(int i,float v,bool show_value=true) const;
@@ -67,6 +68,8 @@ private:
     int _friend_graph_type ;
     int _service_graph_type ;
 
+	float _total_duration_seconds ;
+
     RsPeerId    _current_selected_friend ;
     uint16_t    _current_selected_service ;
     int         _current_unit ;