Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

external/linker/tuner/Mono.Tuner/TunerAnnotations.cs

@@ -0,0 +1,55 @@
+//
+// TunerAnnotations.cs
+//
+// Author:
+//   Jb Evain (jbevain@novell.com)
+//
+// (C) 2007 Novell, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+using Mono.Cecil;
+using Mono.Linker;
+
+namespace Mono.Tuner {
+
+	public class TunerAnnotations {
+
+		static readonly object _internalizedKey = new object ();
+
+		public static void Internalized (LinkContext context, IMetadataTokenProvider provider)
+		{
+			var annotations = context.Annotations.GetCustomAnnotations (_internalizedKey);
+			annotations [provider] = _internalizedKey;
+		}
+
+		public static bool IsInternalized (LinkContext context, IMetadataTokenProvider provider)
+		{
+			var annotations = context.Annotations.GetCustomAnnotations (_internalizedKey);
+
+			return annotations.ContainsKey (provider);
+		}
+
+		private TunerAnnotations ()
+		{
+		}
+	}
+}