First pass at benchmarking for C#
diff --git a/csharp/src/Google.Protobuf.Benchmarks/SerializationConfig.cs b/csharp/src/Google.Protobuf.Benchmarks/SerializationConfig.cs
new file mode 100644
index 0000000..679f16c
--- /dev/null
+++ b/csharp/src/Google.Protobuf.Benchmarks/SerializationConfig.cs
@@ -0,0 +1,89 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2019 Google Inc. All rights reserved.
+// https://github.com/protocolbuffers/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+
+using Benchmarks;
+using Google.Protobuf.Reflection;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+
+namespace Google.Protobuf.Benchmarks
+{
+ /// <summary>
+ /// The configuration for a single serialization test, loaded from a dataset.
+ /// </summary>
+ public class SerializationConfig
+ {
+ private static readonly Dictionary<string, MessageParser> parsersByMessageName =
+ typeof(SerializationBenchmark).Assembly.GetTypes()
+ .Where(t => typeof(IMessage).IsAssignableFrom(t))
+ .ToDictionary(
+ t => ((MessageDescriptor) t.GetProperty("Descriptor", BindingFlags.Static | BindingFlags.Public).GetValue(null)).FullName,
+ t => ((MessageParser) t.GetProperty("Parser", BindingFlags.Static | BindingFlags.Public).GetValue(null)));
+
+ public MessageParser Parser { get; }
+ public IEnumerable<ByteString> Payloads { get; }
+ public string Name { get; }
+
+ public SerializationConfig(string resource)
+ {
+ var data = LoadData(resource);
+ var dataset = BenchmarkDataset.Parser.ParseFrom(data);
+
+ if (!parsersByMessageName.TryGetValue(dataset.MessageName, out var parser))
+ {
+ throw new ArgumentException($"No parser for message {dataset.MessageName} in this assembly");
+ }
+ Parser = parser;
+ Payloads = dataset.Payload;
+ Name = dataset.Name;
+ }
+
+ private static byte[] LoadData(string resource)
+ {
+ using (var stream = typeof(SerializationBenchmark).Assembly.GetManifestResourceStream($"Google.Protobuf.Benchmarks.{resource}"))
+ {
+ if (stream == null)
+ {
+ throw new ArgumentException($"Unable to load embedded resource {resource}");
+ }
+ var copy = new MemoryStream();
+ stream.CopyTo(copy);
+ return copy.ToArray();
+ }
+ }
+
+ public override string ToString() => Name;
+ }
+}
