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/usr/include/firefox/mozilla/Telemetry.h is in firefox-dev 11.0+build1-0ubuntu4.

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/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * The Mozilla Foundation <http://www.mozilla.org/>.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Taras Glek <tglek@mozilla.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef Telemetry_h__
#define Telemetry_h__

#include "mozilla/GuardObjects.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/StartupTimeline.h"

namespace base {
  class Histogram;
}

namespace mozilla {
namespace Telemetry {

enum ID {
#define HISTOGRAM(name, a, b, c, d, e) name,

#include "TelemetryHistograms.h"

#undef HISTOGRAM
HistogramCount
};

/**
 * Adds sample to a histogram defined in TelemetryHistograms.h
 *
 * @param id - histogram id
 * @param sample - value to record.
 */
void Accumulate(ID id, PRUint32 sample);

/**
 * Adds time delta in milliseconds to a histogram defined in TelemetryHistograms.h
 *
 * @param id - histogram id
 * @param start - start time
 * @param end - end time
 */
void AccumulateTimeDelta(ID id, TimeStamp start, TimeStamp end = TimeStamp::Now());

/**
 * Return a raw Histogram for direct manipulation for users who can not use Accumulate().
 */
base::Histogram* GetHistogramById(ID id);

template<ID id>
class AutoTimer {
public:
  AutoTimer(TimeStamp aStart = TimeStamp::Now() MOZILLA_GUARD_OBJECT_NOTIFIER_PARAM)
     : start(aStart)
  {
    MOZILLA_GUARD_OBJECT_NOTIFIER_INIT;
  }

  ~AutoTimer() {
    AccumulateTimeDelta(id, start);
  }

private:
  const TimeStamp start;
  MOZILLA_DECL_USE_GUARD_OBJECT_NOTIFIER
};
} // namespace Telemetry
} // namespace mozilla
#endif // Telemetry_h__