1 files changed, 44 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Runtime/Reliability/CriticalFinalizerObject.cs b/src/mscorlib/src/System/Runtime/Reliability/CriticalFinalizerObject.cs
new file mode 100644
index 0000000000..2524aaaecb
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+++ b/src/mscorlib/src/System/Runtime/Reliability/CriticalFinalizerObject.cs
@@ -0,0 +1,44 @@
+// 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.
+
+//
+/*============================================================
+**
+**
+**
+** Deriving from this class will cause any finalizer you define to be critical
+** (i.e. the finalizer is guaranteed to run, won't be aborted by the host and is
+** run after the finalizers of other objects collected at the same time).
+**
+** You must possess UnmanagedCode permission in order to derive from this class.
+**
+** 
+===========================================================*/
+
+using System;
+using System.Security.Permissions;
+using System.Runtime.InteropServices;
+
+namespace System.Runtime.ConstrainedExecution
+{
+#if !FEATURE_CORECLR
+    [SecurityPermission(SecurityAction.InheritanceDemand, UnmanagedCode=true)]
+#endif
+    [System.Runtime.InteropServices.ComVisible(true)]
+    public abstract class CriticalFinalizerObject
+    {
+        #if FEATURE_CORECLR
+        [System.Security.SecuritySafeCritical] // auto-generated
+        #endif
+        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)]
+        protected CriticalFinalizerObject()
+        {
+        }
+
+        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
+        ~CriticalFinalizerObject()
+        {
+        }
+    }
+}