1 files changed, 88 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/mda.cs b/src/mscorlib/src/System/mda.cs
new file mode 100644
index 0000000000..089039c73c
--- /dev/null
+++ b/src/mscorlib/src/System/mda.cs
@@ -0,0 +1,88 @@
+// 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.Runtime.CompilerServices;
+using System.Runtime.Versioning;
+
+namespace System
+{
+#if MDA_SUPPORTED
+    internal static class Mda
+    {
+        internal static class StreamWriterBufferedDataLost
+        {
+            // State: 0 (not queried); 1 (enabled); 2 (disabled)
+            private static volatile int _enabledState;
+            private static volatile int _captureAllocatedCallStackState;
+
+            internal static bool Enabled {
+                [System.Security.SecuritySafeCritical]  // auto-generated
+                get {
+                    if (_enabledState == 0) {
+                        if (Mda.IsStreamWriterBufferedDataLostEnabled())
+                            _enabledState = 1;
+                        else
+                            _enabledState = 2;
+                    }
+
+                    return (_enabledState == 1);
+                }
+            }
+
+            internal static bool CaptureAllocatedCallStack {
+                [System.Security.SecuritySafeCritical]  // auto-generated
+                get {
+                    if (_captureAllocatedCallStackState == 0) {
+                        if (Mda.IsStreamWriterBufferedDataLostCaptureAllocatedCallStack())
+                            _captureAllocatedCallStackState = 1;
+                        else
+                            _captureAllocatedCallStackState = 2;
+                    }
+
+                    return (_captureAllocatedCallStackState == 1);
+                }
+            }
+
+            [System.Security.SecuritySafeCritical]  // auto-generated
+            internal static void ReportError(String text) {
+                Mda.ReportStreamWriterBufferedDataLost(text);
+            }
+
+        }
+
+        [System.Security.SecurityCritical]  // auto-generated
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern void ReportStreamWriterBufferedDataLost(String text);
+
+        [System.Security.SecurityCritical]  // auto-generated
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern bool IsStreamWriterBufferedDataLostEnabled();
+
+        [System.Security.SecurityCritical]  // auto-generated
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern bool IsStreamWriterBufferedDataLostCaptureAllocatedCallStack();
+
+        [System.Security.SecurityCritical]  // auto-generated
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern void MemberInfoCacheCreation();
+
+        [System.Security.SecurityCritical]  // auto-generated
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern void DateTimeInvalidLocalFormat();
+
+        [System.Security.SecurityCritical]  // auto-generated
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern bool IsInvalidGCHandleCookieProbeEnabled();
+
+        [System.Security.SecurityCritical]  // auto-generated
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern void FireInvalidGCHandleCookieProbe(IntPtr cookie);
+
+        [System.Security.SecurityCritical]
+        [MethodImplAttribute(MethodImplOptions.InternalCall)]
+        internal static extern void ReportErrorSafeHandleRelease(Exception ex);
+    }
+#endif
+}