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55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2013 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_UTIL_TIMER_HPP
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#define MAPNIK_UTIL_TIMER_HPP
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#include <string>
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#include <chrono>
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namespace mapnik {
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class auto_cpu_timer
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{
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public:
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auto_cpu_timer(std::ostream & os, std::string const& message)
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: start_(std::chrono::system_clock::now()),
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os_(os),
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message_(message) {}
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~auto_cpu_timer()
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{
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std::chrono::duration<double,std::milli> elapsed = std::chrono::system_clock::now() - start_;
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os_ << message_ << std::chrono::duration_cast<std::chrono::milliseconds>(elapsed).count() << " ms" << std::endl;
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}
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private:
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std::chrono::time_point<std::chrono::system_clock> start_;
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std::ostream & os_;
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std::string message_;
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};
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// NOTE : add more timers here
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}
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#endif // MAPNIK_UTIL_TIMER_HPP
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