Stabilized performance tests against differences in hardware.

1 files changed, 56 insertions, 0 deletions

diff --git a/src/DotNetOpenAuth.Test/Performance/PerformanceTestUtilities.cs b/src/DotNetOpenAuth.Test/Performance/PerformanceTestUtilities.cs
new file mode 100644
index 0000000..5e28732
--- /dev/null
+++ b/src/DotNetOpenAuth.Test/Performance/PerformanceTestUtilities.cs
@@ -0,0 +1,56 @@
+//-----------------------------------------------------------------------
+// <copyright file="PerformanceTestUtilities.cs" company="Andrew Arnott">
+//     Copyright (c) Andrew Arnott. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.Test.Performance {
+	using System;
+	using System.Diagnostics;
+	using System.Reflection;
+	using System.Threading;
+	using DotNetOpenAuth.OpenId.RelyingParty;
+	using NUnit.Framework;
+
+	internal static class PerformanceTestUtilities {
+		internal static Stats Baseline;
+
+		static PerformanceTestUtilities() {
+			Baseline = CollectBaseline();
+			TestUtilities.TestLogger.InfoFormat(
+				"Scaled where EmptyStaticFunction = 1.0 ({0:f1} nsec = 1.0 units)",
+				Baseline.Median * 1000);
+		}
+
+		internal static bool IsOptimized(Assembly assembly) {
+			DebuggableAttribute debugAttribute = (DebuggableAttribute)System.Attribute.GetCustomAttribute(assembly, typeof(System.Diagnostics.DebuggableAttribute));
+			return debugAttribute == null || !debugAttribute.IsJITOptimizerDisabled;
+		}
+
+		private static Stats CollectBaseline() {
+			using (new HighPerformance()) {
+				return new MultiSampleCodeTimer(10, 1000).Measure(
+					"MethodCalls: EmptyStaticFunction()",
+					10,
+					delegate {
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+						Class.EmptyStaticFunction();
+					});
+			}
+		}
+
+		private class Class {
+			[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
+			public static void EmptyStaticFunction() {
+			}
+		}
+	}
+}