1 files changed, 31 insertions, 0 deletions
diff --git a/src/Common/src/TypeSystem/IL/TypeSystemContext.DynamicInvoke.cs b/src/Common/src/TypeSystem/IL/TypeSystemContext.DynamicInvoke.cs
new file mode 100644
index 000000000..cdad3d9ef
--- /dev/null
+++ b/src/Common/src/TypeSystem/IL/TypeSystemContext.DynamicInvoke.cs
@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Internal.IL.Stubs;
+
+using Debug = System.Diagnostics.Debug;
+
+namespace Internal.TypeSystem
+{
+    partial class TypeSystemContext
+    {
+        private class DynamicInvokeThunkHashtable : LockFreeReaderHashtable<DynamicInvokeMethodSignature, DynamicInvokeMethodThunk>
+        {
+            protected override bool CompareKeyToValue(DynamicInvokeMethodSignature key, DynamicInvokeMethodThunk value) => key.Equals(value.TargetSignature);
+            protected override bool CompareValueToValue(DynamicInvokeMethodThunk value1, DynamicInvokeMethodThunk value2) => value1.TargetSignature.Equals(value2.TargetSignature) && value1.OwningType == value2.OwningType;
+            protected override int GetKeyHashCode(DynamicInvokeMethodSignature key) => key.GetHashCode();
+            protected override int GetValueHashCode(DynamicInvokeMethodThunk value) => value.TargetSignature.GetHashCode();
+            protected override DynamicInvokeMethodThunk CreateValueFromKey(DynamicInvokeMethodSignature key)
+            {
+                return new DynamicInvokeMethodThunk(key.Context.GeneratedAssembly.GetGlobalModuleType(), key);
+            }
+        }
+        DynamicInvokeThunkHashtable _dynamicInvokeThunks = new DynamicInvokeThunkHashtable();
+
+        public MethodDesc GetDynamicInvokeThunk(DynamicInvokeMethodSignature signature)
+        {
+            return _dynamicInvokeThunks.GetOrCreateValue(signature);
+        }
+    }
+}