e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
151 lines
3.6 KiB
C++
151 lines
3.6 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) 2021 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_TIMER_HPP
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#define MAPNIK_TIMER_HPP
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// stl
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#include <cstdlib>
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#include <string>
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#include <sstream>
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#include <iomanip>
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#include <ctime>
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#ifdef _WIN32
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#define NOMINMAX
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#include <windows.h>
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#else
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#include <sys/time.h> // for gettimeofday() on unix
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#include <sys/resource.h>
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#endif
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namespace mapnik {
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// Try to return the time now
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inline double time_now()
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{
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#ifdef _WIN32
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LARGE_INTEGER t, f;
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QueryPerformanceCounter(&t);
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QueryPerformanceFrequency(&f);
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return double(t.QuadPart) / double(f.QuadPart);
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#else
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struct timeval t;
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struct timezone tzp;
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gettimeofday(&t, &tzp);
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return t.tv_sec + t.tv_usec * 1e-6;
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#endif
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}
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// Measure times in both wall clock time and CPU times. Results are returned in milliseconds.
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class timer
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{
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public:
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timer() { restart(); }
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virtual ~timer() {}
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void restart()
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{
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stopped_ = false;
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wall_clock_start_ = time_now();
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cpu_start_ = clock();
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}
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virtual void stop() const
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{
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stopped_ = true;
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cpu_end_ = clock();
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wall_clock_end_ = time_now();
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}
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double cpu_elapsed() const
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{
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// return elapsed CPU time in ms
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if (!stopped_)
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{
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stop();
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}
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return ((double)(cpu_end_ - cpu_start_)) / CLOCKS_PER_SEC * 1000.0;
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}
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double wall_clock_elapsed() const
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{
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// return elapsed wall clock time in ms
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if (!stopped_)
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{
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stop();
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}
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return (wall_clock_end_ - wall_clock_start_) * 1000.0;
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}
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protected:
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mutable double wall_clock_start_, wall_clock_end_;
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mutable clock_t cpu_start_, cpu_end_;
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mutable bool stopped_;
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};
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// A progress_timer behaves like a timer except that the destructor displays
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// an elapsed time message at an appropriate place in an appropriate form.
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class progress_timer : public timer
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{
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public:
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progress_timer(std::ostream& os, std::string const& base_message)
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: os_(os)
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, base_message_(base_message)
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{}
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~progress_timer()
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{
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if (!stopped_)
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{
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stop();
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}
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}
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void stop() const
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{
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timer::stop();
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try
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{
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std::ostringstream s;
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s.precision(2);
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s << std::fixed;
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s << wall_clock_elapsed() << "ms (cpu " << cpu_elapsed() << "ms)";
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s << std::setw(30 - (int)s.tellp()) << std::right << "| " << base_message_ << "\n";
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os_ << s.str();
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} catch (...)
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{} // eat any exceptions
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}
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void discard() { stopped_ = true; }
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private:
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std::ostream& os_;
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std::string base_message_;
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};
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} // namespace mapnik
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#endif // MAPNIK_TIMER_HPP
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