ImportPerformanceLogger.h

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/*
    This file is part of cpp-ethereum.
 
    cpp-ethereum is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    cpp-ethereum is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
 
#include <libdevcore/Common.h>
#include <libdevcore/Log.h>
 
#include <unordered_map>
#include <string>
 
namespace dev
{
 
namespace eth
{
 
class ImportPerformanceLogger
{
public:
    void onStageFinished(std::string const& _name)
    {
        m_stages[_name] = m_stageTimer.elapsed();
        m_stageTimer.restart();
    }
 
    double stageDuration(std::string const& _name) const
    {
        auto const it = m_stages.find(_name);
        return it != m_stages.end() ? it->second : 0;
    }
 
    void onFinished(std::unordered_map<std::string, std::string> const& _additionalValues)
    {
        double const totalElapsed = m_totalTimer.elapsed();
        if (totalElapsed > 0.5)
        {
            cdebug << "SLOW IMPORT: { " << constructReport(totalElapsed, _additionalValues) << " }";
        }
    }
 
private:
    std::string constructReport(double _totalElapsed, std::unordered_map<std::string, std::string> const& _additionalValues);
 
    Timer m_totalTimer;
    Timer m_stageTimer;
    std::unordered_map<std::string, double> m_stages;
};
 
}
}