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/* -*- 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