Tracing: CtfVisualizer: Add percentage of total time to statistics

Adds a column for the percentage of the time of an event to the total
measurement time in percent.

Change-Id: Ic3298b4ef6f34cb893edd987e645c7cfb67458b5
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

3 files changed, 24 insertions, 0 deletions

diff --git a/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp b/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp
index fdfe54c066..8738d3d747 100644
--- a/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp
+++ b/src/plugins/ctfvisualizer/ctfstatisticsmodel.cpp
@@ -58,6 +58,11 @@ void CtfStatisticsModel::addEvent(const QString &title, qint64 durationInNs)
     }
 }
 
+void CtfStatisticsModel::setMeasurementDuration(qint64 timeInNs)
+{
+    m_measurementDurationInNs = timeInNs;
+}
+
 void CtfStatisticsModel::endLoading()
 {
     endResetModel();
@@ -87,6 +92,7 @@ QVariant CtfStatisticsModel::data(const QModelIndex &index, int role) const
             return Qt::AlignLeft;
         case Column::Count:
         case Column::TotalDuration:
+        case Column::RelativeDuration:
         case Column::MinDuration:
         case Column::AvgDuration:
         case Column::MaxDuration:
@@ -103,6 +109,8 @@ QVariant CtfStatisticsModel::data(const QModelIndex &index, int role) const
             return m_data.value(title).count;
         case Column::TotalDuration:
             return m_data.value(title).totalDuration;
+        case Column::RelativeDuration:
+            return m_data.value(title).totalDuration;
         case Column::MinDuration:
         {
             auto minDuration = m_data.value(title).minDuration;
@@ -134,6 +142,16 @@ QVariant CtfStatisticsModel::data(const QModelIndex &index, int role) const
             else
                 return "-";
         }
+        case Column::RelativeDuration:
+        {
+            auto totalDuration = m_data.value(title).totalDuration;
+            if (m_measurementDurationInNs > 0 && totalDuration > 0) {
+                const double percent = (totalDuration / double(m_measurementDurationInNs)) * 100;
+                return QString("%1 %").arg(percent, 0, 'f', 2);
+            } else {
+                return "-";
+            }
+        }
         case Column::MinDuration:
         {
             auto minDuration = m_data.value(title).minDuration;
@@ -175,6 +193,8 @@ QVariant CtfStatisticsModel::headerData(int section, Qt::Orientation orientation
         return tr("Count");
     case Column::TotalDuration:
         return tr("Total Time");
+    case Column::RelativeDuration:
+        return tr("Percentage");
     case Column::MinDuration:
         return tr("Minimum Time");
     case Column::AvgDuration:
diff --git a/src/plugins/ctfvisualizer/ctfstatisticsmodel.h b/src/plugins/ctfvisualizer/ctfstatisticsmodel.h
index 99ede0f638..434d7c9c96 100644
--- a/src/plugins/ctfvisualizer/ctfstatisticsmodel.h
+++ b/src/plugins/ctfvisualizer/ctfstatisticsmodel.h
@@ -49,6 +49,7 @@ public:
         Title = 0,
         Count,
         TotalDuration,
+        RelativeDuration,
         MinDuration,
         AvgDuration,
         MaxDuration,
@@ -67,6 +68,7 @@ public:
 
     void beginLoading();
     void addEvent(const QString &title, qint64 durationInNs);
+    void setMeasurementDuration(qint64 timeInNs);
     void endLoading();
 
 private:
@@ -77,6 +79,7 @@ private:
     QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
 
     QHash<QString, EventData> m_data;
+    qint64 m_measurementDurationInNs = 0;
 
 };
 
diff --git a/src/plugins/ctfvisualizer/ctftracemanager.cpp b/src/plugins/ctfvisualizer/ctftracemanager.cpp
index 382fe54438..52859e08b1 100644
--- a/src/plugins/ctfvisualizer/ctftracemanager.cpp
+++ b/src/plugins/ctfvisualizer/ctftracemanager.cpp
@@ -282,6 +282,7 @@ void CtfTraceManager::updateStatistics()
             }
         }
     }
+    m_statisticsModel->setMeasurementDuration(qint64((m_traceEnd - m_traceBegin) * 1000));
     m_statisticsModel->endLoading();
 }