Initial commit

VectorFiller/atlas/collection/decorator/MeasuredVectorFactory.h

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+#pragma once
+
+#include "../../time/time.h"
+#include "../VectorFactory.h"
+#include <chrono>
+#include <iostream>
+
+namespace atlas::collection::decorator {
+template <typename T>
+class MeasuredVectorFactory : public VectorFactory<T> {
+public:
+    using decorated_type = VectorFactory<T>;
+    using decorated_ptr = std::unique_ptr<decorated_type>;
+    using stopwatch_ptr = std::unique_ptr<time::Timer<std::chrono::milliseconds>>;
+
+    MeasuredVectorFactory(stopwatch_ptr stopwatch, decorated_ptr decorated)
+        : m_stopwatch { std::move(stopwatch) }
+        , m_decorated { std::move(decorated) }
+    {
+    }
+
+    auto createAndFillVector(size_t const size) -> typename decorated_type::product_type override final
+    {
+        return logTimerResult(m_stopwatch->measure(
+            [this, size] { return m_decorated->createAndFillVector(size); }));
+    }
+
+private:
+    template <typename Result>
+    auto logTimerResult(Result&& result) const
+    {
+        std::cout << "Duration: " << result.duration.count() << "ms\n";
+        return result.value;
+    }
+
+    stopwatch_ptr m_stopwatch;
+    decorated_ptr m_decorated;
+};
+}