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/*
Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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 2 of the License, or
(at your option) any later version.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file src/timer.cc
* @brief Some timing classes for debugging and profiling.
*/
#include "timer.h"
#include "util.h"
#include <fmt/format.h>
#include <sys/time.h>
#include <iostream>
#include "i18n.h"
using std::cout;
using std::list;
using std::max;
using std::pair;
using std::string;
using boost::optional;
/** @param n Name to use when giving output */
PeriodTimer::PeriodTimer (string n)
: _name (n)
{
gettimeofday (&_start, 0);
}
/** Destroy PeriodTimer and output the time elapsed since its construction */
PeriodTimer::~PeriodTimer ()
{
struct timeval stop;
gettimeofday (&stop, 0);
cout << N_("T: ") << _name << N_(": ") << (seconds (stop) - seconds (_start)) << N_("\n");
}
StateTimer::StateTimer (string n, string s)
: _name (n)
{
struct timeval t;
gettimeofday (&t, 0);
_time = seconds (t);
_state = s;
}
StateTimer::StateTimer (string n)
: _name (n)
{
}
void
StateTimer::set (string s)
{
set_internal (s);
}
void
StateTimer::set_internal (optional<string> s)
{
double const last = _time;
struct timeval t;
gettimeofday (&t, 0);
_time = seconds (t);
if (s && _counts.find(*s) == _counts.end()) {
_counts[*s] = Counts();
}
if (_state) {
_counts[*_state].total_time += _time - last;
_counts[*_state].number++;
}
_state = s;
}
void
StateTimer::unset ()
{
set_internal (optional<string>());
}
/** Destroy StateTimer and generate a summary of the state timings on cout */
StateTimer::~StateTimer ()
{
if (!_state) {
return;
}
unset ();
int longest = 0;
for (auto const& i: _counts) {
longest = max (longest, int(i.first.length()));
}
list<pair<double, string>> sorted;
for (auto const& i: _counts) {
string name = i.first + string(longest + 1 - i.first.size(), ' ');
char buffer[64];
snprintf (buffer, 64, "%.4f", i.second.total_time);
string total_time (buffer);
sorted.push_back(make_pair(i.second.total_time, fmt::format("\t{}{} {} {}", name, total_time, i.second.number, (i.second.total_time / i.second.number))));
}
sorted.sort ([](pair<double, string> const& a, pair<double, string> const& b) {
return a.first > b.first;
});
cout << _name << N_(":\n");
for (auto const& i: sorted) {
cout << N_("\t") << i.second << "\n";
}
}
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