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/*
* Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* 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 otbStopwatch_h
#define otbStopwatch_h
#include <cstdint>
#include <string>
#include <iosfwd>
#include "OTBCommonExport.h"
namespace otb
{
/** \class Stopwatch
* \brief Stopwatch timer.
*
* A simple class for measuring elapsed time.
*
*
* \ingroup OTBCommon
*/
class OTBCommon_EXPORT Stopwatch final
{
public:
/** Standard class typedefs. */
typedef Stopwatch Self;
/** Represents a duration measured in milliseconds */
typedef uint64_t DurationType;
/** Constructs a timer instance */
Stopwatch();
/** Start the timer if not already running */
void Start();
/** Stop the timer if running */
void Stop();
/** Reset the timer */
void Reset();
/** Reset and restart the timer */
void Restart();
/** Get the total duration, excluding the current iteration */
DurationType GetElapsedMilliseconds() const;
/** Get the total duration in human readable format (ostream
* version) */
void GetElapsedHumanReadableTime(std::ostream& oss) const;
/** Get the total duration in human readable format */
std::string GetElapsedHumanReadableTime() const;
/** Returns whether the stopwatch is running */
bool IsRunning() const;
/** Creates and starts a new stopwatch instance */
static Stopwatch StartNew();
private:
typedef uint64_t TimepointType;
TimepointType GetTimestamp() const;
DurationType GetRunningElapsedTime() const;
TimepointType m_StartTime;
DurationType m_ElapsedMilliseconds;
bool m_IsRunning;
};
} // namespace otb
#endif
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