QmlProfiler: show median time in summary

Task-number: QTCREATORBUG-5032
Change-Id: I53e95de12041fe1ee416b724dbd1076d330ee7db
Reviewed-on: http://codereview.qt.nokia.com/3516
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/libs/qmljsdebugclient/qmlprofilereventlist.cpp

@@ -228,6 +228,7 @@ void QmlProfilerEventList::compileStatistics()
         // maximum possible value
         eventDescription->minTime = d->m_endTimeSortedList.last().endTime;
         eventDescription->maxTime = 0;
+        eventDescription->medianTime = 0;
         eventDescription->cumulatedDuration = 0;
         eventDescription->parentList.clear();
         eventDescription->childrenList.clear();
@@ -273,6 +274,20 @@ void QmlProfilerEventList::compileStatistics()
         binding->timePerCall = binding->calls > 0 ? double(binding->cumulatedDuration) / binding->calls : 0;
     }
 
+    // compute median time
+    QHash < QmlEventData* , QList<qint64> > durationLists;
+    foreach (const QmlEventStartTimeData &startData, d->m_startTimeSortedList) {
+        durationLists[startData.description].append(startData.length);
+    }
+    QMutableHashIterator < QmlEventData* , QList<qint64> > iter(durationLists);
+    while (iter.hasNext()) {
+        iter.next();
+        if (!iter.value().isEmpty()) {
+            qSort(iter.value());
+            iter.key()->medianTime = iter.value().at(iter.value().count()/2);
+        }
+    }
+
     // continue postprocess
     postProcess();
 }

src/libs/qmljsdebugclient/qmlprofilereventlist.h

@@ -57,6 +57,7 @@ struct QMLJSDEBUGCLIENT_EXPORT QmlEventData
     qint64 maxTime;
     double timePerCall;
     double percentOfTime;
+    qint64 medianTime;
 };
 
 typedef QHash<QString, QmlEventData *> QmlEventHash;

src/plugins/qmlprofiler/qmlprofilereventview.cpp

@@ -165,6 +165,7 @@ void QmlProfilerEventsView::setViewType(ViewTypes type)
         setFieldViewable(TimePerCall, true);
         setFieldViewable(MaxTime, true);
         setFieldViewable(MinTime, true);
+        setFieldViewable(MedianTime, true);
         setFieldViewable(Details, false);
         setFieldViewable(Parents, false);
         setFieldViewable(Children, false);
@@ -181,6 +182,7 @@ void QmlProfilerEventsView::setViewType(ViewTypes type)
         setFieldViewable(TimePerCall, false);
         setFieldViewable(MaxTime, false);
         setFieldViewable(MinTime, false);
+        setFieldViewable(MedianTime, false);
         setFieldViewable(Details, true);
         setFieldViewable(Parents, true);
         setFieldViewable(Children, false);
@@ -197,6 +199,7 @@ void QmlProfilerEventsView::setViewType(ViewTypes type)
         setFieldViewable(TimePerCall, false);
         setFieldViewable(MaxTime, false);
         setFieldViewable(MinTime, false);
+        setFieldViewable(MedianTime, false);
         setFieldViewable(Details, true);
         setFieldViewable(Parents, false);
         setFieldViewable(Children, true);
@@ -234,7 +237,9 @@ void QmlProfilerEventsView::setHeaderLabels()
     if (d->m_fieldShown[CallCount])
         d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Calls")));
     if (d->m_fieldShown[TimePerCall])
-        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Time per Call")));
+        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Mean Time")));
+    if (d->m_fieldShown[MedianTime])
+        d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Median Time")));
     if (d->m_fieldShown[MaxTime])
         d->m_model->setHeaderData(fieldIndex++, Qt::Horizontal, QVariant(tr("Longest Time")));
     if (d->m_fieldShown[MinTime])
@@ -324,6 +329,11 @@ void QmlProfilerEventsView::QmlProfilerEventsViewPrivate::buildModelFromList( co
             newRow.last()->setData(QVariant(binding->timePerCall));
         }
 
+        if (m_fieldShown[MedianTime]) {
+            newRow << new EventsViewItem(displayTime(binding->medianTime));
+            newRow.last()->setData(QVariant(binding->medianTime));
+        }
+
         if (m_fieldShown[MaxTime]) {
             newRow << new EventsViewItem(displayTime(binding->maxTime));
             newRow.last()->setData(QVariant(binding->maxTime));
@@ -339,6 +349,8 @@ void QmlProfilerEventsView::QmlProfilerEventsViewPrivate::buildModelFromList( co
             newRow.last()->setData(QVariant(binding->details));
         }
 
+
+
         if (!newRow.isEmpty()) {
             // no edit
             foreach (QStandardItem *item, newRow)

src/plugins/qmlprofiler/qmlprofilereventview.h

@@ -62,6 +62,7 @@ public:
         TimePerCall,
         MaxTime,
         MinTime,
+        MedianTime,
         Details,
         Parents,
         Children,