Timer.hh

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/*
 * Copyright (C) 2016 Open Source Robotics Foundation
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/
#ifndef IGNITION_COMMON_TIMER_HH_
#define IGNITION_COMMON_TIMER_HH_

#include <ignition/common/Time.hh>
#include <ignition/common/Export.hh>

namespace ignition
{
  namespace common
  {
    class IGNITION_COMMON_VISIBLE Timer
    {
      public: Timer();

      public: virtual ~Timer();

      public: virtual void Start();

      public: virtual void Stop();

      public: bool Running() const;

      public: Time Elapsed() const;

      public: friend std::ostream &operator<<(std::ostream &out,
                                              const ignition::common::Timer &t)
              {
                out << t.Elapsed();
                return out;
              }

      private: Time start;

      private: Time stop;

      private: bool running;
    };
  }
}
#endif