Imported Upstream version 6.4.0.137

Former-commit-id: 943baa9f16a098c33e129777827f3a9d20da00d6

mcs/class/System.Private.CoreLib/System.Runtime.Remoting.Contexts/Context.cs

@@ -0,0 +1,40 @@
+using System.Runtime.InteropServices;
+using System.Runtime.CompilerServices;
+
+namespace System.Runtime.Remoting.Contexts {
+
+	[StructLayout (LayoutKind.Sequential)]
+	/* FIXME: Mono: this was public in mscorlib */
+	internal class Context 
+	{
+#pragma warning disable 169, 414
+		#region Sync with domain-internals.h
+		int domain_id;
+		int context_id;
+		UIntPtr static_data; /* GC-tracked */
+		UIntPtr data;
+		#endregion
+#pragma warning restore 169, 414
+
+		[MethodImpl (MethodImplOptions.InternalCall)]
+		extern static void RegisterContext (Context ctx);
+
+		[MethodImpl (MethodImplOptions.InternalCall)]
+		extern static void ReleaseContext (Context ctx);
+		
+		public Context ()
+		{
+#if false
+			domain_id = Thread.GetDomainID();
+			context_id = Interlocked.Increment (ref global_count);
+
+			RegisterContext (this);
+#endif
+		}
+
+		~Context ()
+		{
+			ReleaseContext (this);
+		}
+	}
+}