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/*
Cadabra: a field-theory motivated computer algebra system.
Copyright (C) 2001-2018 Kasper Peeters <kasper.peeters@aei.mpg.de>
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 <ratio>
#include "Stopwatch.hh"
Stopwatch::Stopwatch()
: elapsed_(0), stopped_(true)
{
}
void Stopwatch::reset()
{
elapsed_=0;
start_=clock::now();
}
void Stopwatch::start()
{
stopped_=false;
start_=clock::now();
}
void Stopwatch::stop()
{
stopped_=true;
checkpoint_();
}
bool Stopwatch::stopped() const
{
return stopped_;
}
void Stopwatch::checkpoint_() const
{
using namespace std::chrono;
clock::time_point stop_ = clock::now();
elapsed_ += duration_cast<duration<long, std::micro>>(stop_ - start_).count();
start_ = stop_;
}
long Stopwatch::seconds() const
{
if(!stopped_) checkpoint_();
return elapsed_ / s_to_us;
}
long Stopwatch::useconds() const
{
if(!stopped_) checkpoint_();
return elapsed_ % s_to_us;
}
std::ostream& operator<<(std::ostream& lhs, const Stopwatch& rhs)
{
return lhs << rhs.seconds() << "s and " << rhs.useconds() << "us";
}
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