1 files changed, 40 insertions, 0 deletions
diff --git a/xpcom/base/nsTraceRefcnt.h b/xpcom/base/nsTraceRefcnt.h
new file mode 100644
index 000000000..73e123a3f
--- /dev/null
+++ b/xpcom/base/nsTraceRefcnt.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef nsTraceRefcnt_h___
+#define nsTraceRefcnt_h___
+
+#include <stdio.h> // for FILE
+#include "nscore.h"
+
+class nsTraceRefcnt
+{
+public:
+  static void Shutdown();
+
+  static nsresult DumpStatistics();
+
+  static void ResetStatistics();
+
+  static void WalkTheStack(FILE* aStream);
+
+  /**
+   * Tell nsTraceRefcnt whether refcounting, allocation, and destruction
+   * activity is legal.  This is used to trigger assertions for any such
+   * activity that occurs because of static constructors or destructors.
+   */
+  static void SetActivityIsLegal(bool aLegal);
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// And now for that utility that you've all been asking for...
+
+extern "C" void
+NS_MeanAndStdDev(double aNumberOfValues,
+                 double aSumOfValues, double aSumOfSquaredValues,
+                 double* aMeanResult, double* aStdDevResult);
+
+////////////////////////////////////////////////////////////////////////////////
+#endif