cppcheck/lib/timer.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2016 Cppcheck team.
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*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "timer.h"
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#include <algorithm>
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#include <iostream>
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#include <utility>
#include <vector>
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/*
TODO:
- rename "file" to "single"
- synchronise map access in multithreaded mode or disable timing
- add unit tests
- for --showtime (needs input file)
- for Timer* classes
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*/
namespace {
typedef std::pair<std::string, struct TimerResultsData> dataElementType;
bool more_second_sec(const dataElementType& lhs, const dataElementType& rhs)
{
return lhs.second.seconds() > rhs.second.seconds();
}
}
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void TimerResults::ShowResults(SHOWTIME_MODES mode) const
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{
if (mode == SHOWTIME_NONE)
return;
std::cout << std::endl;
TimerResultsData overallData;
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std::vector<dataElementType> data(_results.begin(), _results.end());
std::sort(data.begin(), data.end(), more_second_sec);
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size_t ordinal = 1; // maybe it would be nice to have an ordinal in output later!
for (std::vector<dataElementType>::const_iterator iter=data.begin() ; iter!=data.end(); ++iter) {
const double sec = iter->second.seconds();
const double secAverage = sec / (double)(iter->second._numberOfResults);
overallData._clocks += iter->second._clocks;
if ((mode != SHOWTIME_TOP5) || (ordinal<=5)) {
std::cout << iter->first << ": " << sec << "s (avg. " << secAverage << "s - " << iter->second._numberOfResults << " result(s))" << std::endl;
}
++ordinal;
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}
const double secOverall = overallData.seconds();
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std::cout << "Overall time: " << secOverall << "s" << std::endl;
}
void TimerResults::AddResults(const std::string& str, std::clock_t clocks)
{
_results[str]._clocks += clocks;
_results[str]._numberOfResults++;
}
Timer::Timer(const std::string& str, unsigned int showtimeMode, TimerResultsIntf* timerResults)
: _str(str)
, _timerResults(timerResults)
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, _start(0)
, _showtimeMode(showtimeMode)
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, _stopped(false)
{
if (showtimeMode != SHOWTIME_NONE)
_start = std::clock();
}
Timer::Timer(const Timer& other)
: _str(other._str)
, _timerResults(other._timerResults)
, _start(other._start)
, _showtimeMode(other._showtimeMode)
, _stopped(other._stopped)
{
}
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Timer::~Timer()
{
Stop();
}
void Timer::Stop()
{
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if ((_showtimeMode != SHOWTIME_NONE) && !_stopped) {
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const std::clock_t end = std::clock();
const std::clock_t diff = end - _start;
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if (_showtimeMode == SHOWTIME_FILE) {
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double sec = (double)diff / CLOCKS_PER_SEC;
std::cout << _str << ": " << sec << "s" << std::endl;
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} else {
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if (_timerResults)
_timerResults->AddResults(_str, diff);
}
}
_stopped = true;
}