Writing benchmark data at the end of the game

OpenRA.Game/Support/Benchmark.cs

@@ -0,0 +1,62 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2019 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+
+namespace OpenRA.Support
+{
+	class Benchmark
+	{
+		readonly string prefix;
+		readonly Dictionary<string, List<BenchmarkPoint>> samples = new Dictionary<string, List<BenchmarkPoint>>();
+
+		public Benchmark(string prefix)
+		{
+			this.prefix = prefix;
+		}
+
+		public void Tick(int localTick)
+		{
+			foreach (var item in PerfHistory.Items)
+				samples.GetOrAdd(item.Key).Add(new BenchmarkPoint(localTick, item.Value.LastValue));
+		}
+
+		class BenchmarkPoint
+		{
+			public int Tick { get; private set; }
+			public double Value { get; private set; }
+
+			public BenchmarkPoint(int tick, double value)
+			{
+				Tick = tick;
+				Value = value;
+			}
+		}
+
+		public void Write()
+		{
+			foreach (var sample in samples)
+			{
+				var name = sample.Key;
+				Log.AddChannel(name, "{0}{1}.csv".F(prefix, name));
+				Log.Write(name, "tick,time [ms]");
+
+				foreach (var point in sample.Value)
+					Log.Write(name, "{0},{1}".F(point.Tick,  point.Value));
+			}
+		}
+
+		public void Reset()
+		{
+			samples.Clear();
+		}
+	}
+}