1 files changed, 50 insertions, 0 deletions
diff --git a/src/mscorlib/corefx/Microsoft/Win32/SafeHandles/SafeFileHandle.Windows.cs b/src/mscorlib/corefx/Microsoft/Win32/SafeHandles/SafeFileHandle.Windows.cs
new file mode 100644
index 0000000000..7d4dd444c7
--- /dev/null
+++ b/src/mscorlib/corefx/Microsoft/Win32/SafeHandles/SafeFileHandle.Windows.cs
@@ -0,0 +1,50 @@
+// 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 System;
+using System.Security;
+using System.Runtime.InteropServices;
+using System.Threading;
+using Microsoft.Win32;
+
+namespace Microsoft.Win32.SafeHandles
+{
+    public sealed class SafeFileHandle : SafeHandleZeroOrMinusOneIsInvalid
+    {
+        private bool? _isAsync;
+
+        private SafeFileHandle() : base(true)
+        {
+            _isAsync = null;
+        }
+
+        public SafeFileHandle(IntPtr preexistingHandle, bool ownsHandle) : base(ownsHandle)
+        {
+            SetHandle(preexistingHandle);
+
+            _isAsync = null;
+        }
+
+        internal bool? IsAsync
+        {
+            get
+            {
+                return _isAsync;
+            }
+
+            set
+            {
+                _isAsync = value;
+            }
+        }
+
+        internal ThreadPoolBoundHandle ThreadPoolBinding { get; set; }
+
+        override protected bool ReleaseHandle()
+        {
+            return Interop.mincore.CloseHandle(handle);
+        }
+    }
+}
+