62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2018 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef SCOPED_TIMER_H
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#define SCOPED_TIMER_H
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#include <chrono>
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/**
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* A simple RAII class to measure the time of an operation.
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*
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* ON construction, a timer is started, and on destruction, the timer is
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* ended, and the time difference is written into the given duration
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*/
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template<typename DURATION>
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class SCOPED_TIMER
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{
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using CLOCK = std::chrono::steady_clock;
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using TIME_PT = std::chrono::time_point<CLOCK>;
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public:
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SCOPED_TIMER( DURATION& aDuration ):
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m_duration( aDuration )
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{
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m_start = CLOCK::now();
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}
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~SCOPED_TIMER()
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{
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const auto end = CLOCK::now();
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// update the output
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m_duration = std::chrono::duration_cast<DURATION>( end - m_start );
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}
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private:
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DURATION& m_duration;
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TIME_PT m_start;
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};
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#endif // SCOPED_TIMER_h
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