diff --git a/src/models/data.cpp b/src/models/data.cpp
index d86094fc..62efaba9 100644
--- a/src/models/data.cpp
+++ b/src/models/data.cpp
@@ -12,6 +12,79 @@
 
 using namespace Data;
 
+ItemCost::ItemCost(std::size_t size)
+    : m_cost(size)
+{
+}
+
+ItemCost::ItemCost(qint64 value, std::size_t count)
+    : m_cost(value, count)
+{
+}
+
+ItemCost::ItemCost(std::valarray<qint64>&& cost)
+    : m_cost(cost)
+{
+}
+ItemCost::~ItemCost() = default;
+
+void ItemCost::resize(std::size_t newSize, qint64 value)
+{
+    m_cost.resize(newSize, value);
+}
+
+std::size_t ItemCost::size() const
+{
+    return m_cost.size();
+}
+
+ItemCost ItemCost::operator+(const ItemCost& rhs) const
+{
+    return static_cast<std::valarray<qint64>>(m_cost + rhs.m_cost);
+}
+
+ItemCost ItemCost::operator-(const ItemCost& rhs) const
+{
+    return static_cast<std::valarray<qint64>>(m_cost - rhs.m_cost);
+}
+
+ItemCost& ItemCost::operator+=(const ItemCost& rhs)
+{
+    m_cost += rhs.m_cost;
+    return *this;
+}
+
+qint64& ItemCost::operator[](int index)
+{
+    if (static_cast<std::size_t>(index) < m_cost.size()) {
+        resize(index + 1);
+    }
+    return m_cost[index];
+}
+
+qint64 ItemCost::operator[](int index) const
+{
+    if (static_cast<std::size_t>(index) < m_cost.size()) {
+        return m_cost[index];
+    }
+    return 0;
+}
+
+qint64 ItemCost::sum() const
+{
+    return m_cost.sum();
+}
+
+auto ItemCost::begin() const
+{
+    return std::begin(m_cost);
+}
+
+auto ItemCost::end() const
+{
+    return std::end(m_cost);
+}
+
 namespace {
 
 ItemCost buildTopDownResult(const BottomUp& bottomUpData, const Costs& bottomUpCosts, TopDown* topDownData,
@@ -338,28 +411,21 @@ void Data::callerCalleesFromBottomUpData(const BottomUpResults& bottomUpData, Ca
 
 QDebug Data::operator<<(QDebug stream, const Symbol& symbol)
 {
-    stream.noquote().nospace() << "Symbol{"
-                               << "symbol=" << symbol.symbol << ", "
-                               << "relAddr=" << symbol.relAddr << ", "
-                               << "size=" << symbol.size << ", "
-                               << "binary=" << symbol.binary << "}";
+    stream.noquote().nospace() << "Symbol{" << "symbol=" << symbol.symbol << ", " << "relAddr=" << symbol.relAddr
+                               << ", " << "size=" << symbol.size << ", " << "binary=" << symbol.binary << "}";
     return stream.resetFormat().space();
 }
 
 QDebug Data::operator<<(QDebug stream, const FileLine& fileLine)
 {
-    stream.noquote().nospace() << "FileLine{"
-                               << "file=" << fileLine.file << ", "
-                               << "line=" << fileLine.line << "}";
+    stream.noquote().nospace() << "FileLine{" << "file=" << fileLine.file << ", " << "line=" << fileLine.line << "}";
     return stream.resetFormat().space();
 }
 
 QDebug Data::operator<<(QDebug stream, const Location& location)
 {
-    stream.noquote().nospace() << "Location{"
-                               << "address=" << location.address << ", "
-                               << "relAddr=" << location.relAddr << ", "
-                               << "fileLine=" << location.fileLine << "}";
+    stream.noquote().nospace() << "Location{" << "address=" << location.address << ", "
+                               << "relAddr=" << location.relAddr << ", " << "fileLine=" << location.fileLine << "}";
     return stream.resetFormat().space();
 }
 
@@ -375,10 +441,9 @@ QDebug Data::operator<<(QDebug stream, const ItemCost& cost)
 
 QDebug Data::operator<<(QDebug stream, const CostSummary& cost)
 {
-    stream.noquote().nospace() << "CostSummary{"
-                               << "label = " << cost.label << ", "
-                               << "sampleCount = " << cost.sampleCount << ", "
-                               << "totalPeriod = " << cost.totalPeriod << "}";
+    stream.noquote().nospace() << "CostSummary{" << "label = " << cost.label << ", "
+                               << "sampleCount = " << cost.sampleCount << ", " << "totalPeriod = " << cost.totalPeriod
+                               << "}";
     return stream.resetFormat().space();
 }
 
diff --git a/src/models/data.h b/src/models/data.h
index 6a2c0cff..a71674d1 100644
--- a/src/models/data.h
+++ b/src/models/data.h
@@ -203,7 +203,32 @@ struct FrameLocation
     Data::Location location;
 };
 
-using ItemCost = std::valarray<qint64>;
+class ItemCost
+{
+public:
+    ItemCost(std::size_t size = 0);
+    ItemCost(qint64 value, std::size_t count);
+    ItemCost(std::valarray<qint64>&& cost);
+    ~ItemCost();
+
+    void resize(std::size_t newSize, qint64 value = 0);
+    std::size_t size() const;
+
+    ItemCost operator+(const ItemCost& rhs) const;
+    ItemCost operator-(const ItemCost& rhs) const;
+    ItemCost& operator+=(const ItemCost& rhs);
+
+    qint64& operator[](int index);
+    qint64 operator[](int index) const;
+
+    qint64 sum() const;
+
+    auto begin() const;
+    auto end() const;
+
+private:
+    std::valarray<qint64> m_cost;
+};
 
 QDebug operator<<(QDebug stream, const ItemCost& cost);
 
diff --git a/src/recordpage.cpp b/src/recordpage.cpp
index f29b12b0..d58325f1 100644
--- a/src/recordpage.cpp
+++ b/src/recordpage.cpp
@@ -40,6 +40,8 @@
 #include <Solid/Device>
 #include <Solid/Processor>
 
+#include <cmath>
+
 #include "multiconfigwidget.h"
 #include "perfoutputwidgetkonsole.h"
 #include "perfoutputwidgettext.h"
diff --git a/src/util.h b/src/util.h
index cd72922d..c1ba483b 100644
--- a/src/util.h
+++ b/src/util.h
@@ -7,7 +7,6 @@
 
 #pragma once
 
-#include <valarray>
 #include <QHashFunctions>
 #include <QtGlobal>
 
@@ -20,7 +19,7 @@ struct Symbol;
 struct FileLine;
 struct LocationCost;
 class Costs;
-using ItemCost = std::valarray<qint64>;
+class ItemCost;
 }
 
 namespace KParts {