1 files changed, 44 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Threading/SynchronizationLockException.cs b/src/mscorlib/src/System/Threading/SynchronizationLockException.cs
new file mode 100644
index 0000000000..0610a6063d
--- /dev/null
+++ b/src/mscorlib/src/System/Threading/SynchronizationLockException.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.
+
+//
+/*=============================================================================
+**
+**
+**
+** Purpose: Wait(), Notify() or NotifyAll() was called from an unsynchronized
+**          block of code.
+**
+**
+=============================================================================*/
+
+namespace System.Threading {
+
+    using System;
+    using System.Runtime.Serialization;
+    [System.Runtime.InteropServices.ComVisible(true)]
+    [Serializable]
+    public class SynchronizationLockException : SystemException {
+        public SynchronizationLockException() 
+            : base(Environment.GetResourceString("Arg_SynchronizationLockException")) {
+            SetErrorCode(__HResults.COR_E_SYNCHRONIZATIONLOCK);
+        }
+    
+        public SynchronizationLockException(String message) 
+            : base(message) {
+            SetErrorCode(__HResults.COR_E_SYNCHRONIZATIONLOCK);
+        }
+    
+        public SynchronizationLockException(String message, Exception innerException) 
+            : base(message, innerException) {
+            SetErrorCode(__HResults.COR_E_SYNCHRONIZATIONLOCK);
+        }
+
+        protected SynchronizationLockException(SerializationInfo info, StreamingContext context) : base (info, context) {
+        }
+    }
+
+}
+
+