108 lines
3.0 KiB
C
108 lines
3.0 KiB
C
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2019,
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Faculty of Mathematics and Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO 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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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//[<] [\ensuremath{<}]
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//[>] [\ensuremath{>}]
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\setcounter{tocdepth}{3}
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\tableofcontents
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1 The Timer class
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*/
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#pragma once
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#include <string>
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#include <sstream>
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#include <ctime> /* clock_t, clock, CLOCKS_PER_SEC */
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namespace pointcloud2 {
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class Timer {
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public:
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enum UNIT { nanos, millis, secs };
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private:
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/* the number of chars reserved for numbers */
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size_t NUM_WIDTH = 10;
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/* the time unit in which to report tasks */
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UNIT _unit;
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/* the start time of the current task */
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clock_t _startTime;
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/* the total time sum of all completed tasks */
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clock_t _totalTime;
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/* the number of completed tasks */
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size_t _completedTaskCount;
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/* the name of the current task */
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std::string _currentTaskName;
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/* the report for the last task */
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std::string _lastTaskReport;
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/* the length of the longest line in the report */
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size_t _maxLineLength;
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/* the report of all tasks performed since the last reset */
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std::stringstream _report;
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public:
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Timer(const UNIT unit);
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~Timer() = default;
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/* resets the timer and clears the report */
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void reset();
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/* starts the next task. If a task was started, it is automatically
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* stopped and its time added to the report */
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void startTask(const std::string task);
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/* stops the current task. This is called automatically if another
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* task is started or a report for the last task is retrieved */
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void stopTask();
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/* returns the report for the last task (with no line breaks at the end).
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* If the last task is still running, it will be stopped */
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std::string getReportForLastTask();
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/* returns a report for all tasks started since instantiation or last
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* reset of the Timer */
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std::string getReportForAllTasks();
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/* returns the report stream to allow for additional information
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* to be inserted into the stream. Note that the current task is
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* stopped. */
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std::stringstream& getReportStream();
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/* returns a string to add adequate inset to the report stream */
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std::string getInset();
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private:
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Timer(const Timer& timer); // cannot copy stringstream
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std::string getLine(const double duration, const std::string text);
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static std::string format(const double num);
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};
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} /* namespace pointcloud2 */
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