add GetPinnableReference benchmarks

dotnet · Aug 1, 2018 · 68587cd · 68587cd
1 parent 24ecd7f
commit 68587cd
Show file tree

Hide file tree

Showing 2 changed files with 33 additions and 0 deletions.
diff --git a/src/benchmarks/corefx/System.Memory/ReadOnlySpan.cs b/src/benchmarks/corefx/System.Memory/ReadOnlySpan.cs
@@ -5,17 +5,35 @@
 using System.Collections.Generic;
 using BenchmarkDotNet.Attributes;
 using Benchmarks;
+using Consumer = BenchmarkDotNet.Engines.Consumer;
 
 namespace System.Memory
 {
     [BenchmarkCategory(Categories.CoreCLR, Categories.CoreFX, Categories.Span)]
     public class ReadOnlySpan
     {
         private readonly string _sampeString = "this is a very nice sample string";
+        private readonly Consumer _consumer = new Consumer();
 
         [Benchmark]
         public ReadOnlySpan<char> StringAsSpan() => _sampeString.AsSpan();
 
+        [Benchmark(OperationsPerInvoke = 16)]
+        public void GetPinnableReference()
+        {
+            ReadOnlySpan<char> span = _sampeString.AsSpan();
+            var consumer = _consumer;
+
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+            consumer.Consume(span.GetPinnableReference()); consumer.Consume(span.GetPinnableReference());
+        }
+
         [Benchmark(OperationsPerInvoke = 16)]
         [ArgumentsSource(nameof(IndexOfStringArguments))]
         public int IndexOfString(string input, string value, StringComparison comparisonType)

diff --git a/src/benchmarks/corefx/System.Memory/Span.cs b/src/benchmarks/corefx/System.Memory/Span.cs
@@ -4,6 +4,7 @@
 
 using System.Collections;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using BenchmarkDotNet.Attributes;
 using Benchmarks;
 
@@ -80,5 +81,19 @@ public void SetupBinarySearch()
 
         [Benchmark]
         public int BinarySearch() => new System.Span<T>(_emptyWithSingleValue).BinarySearch(_notDefaultValue);
+
+        [Benchmark(OperationsPerInvoke = 16)]
+        public void GetPinnableReference()
+        {
+            var span = new System.Span<T>(_array);
+
+            Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference());
+            Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference());
+            Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference());
+            Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference()); Consume(span.GetPinnableReference());
+        }
+
+        [MethodImpl(MethodImplOptions.NoInlining)]
+        private void Consume(in T _) { }
     }
 }