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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): David Salinas
*
* Copyright (C) 2014 INRIA Sophia Antipolis-Mediterranee (France)
*
* 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/>.
*/
#ifndef CLOCK_H_
#define CLOCK_H_
#include <boost/date_time/posix_time/posix_time.hpp>
#include <string>
class Clock {
public:
Clock() : end_called(false) {
startTime = boost::posix_time::microsec_clock::local_time();
}
Clock(const std::string& msg_) {
end_called = false;
begin();
msg = msg_;
}
void begin() const {
end_called = false;
startTime = boost::posix_time::microsec_clock::local_time();
}
void end() const {
end_called = true;
endTime = boost::posix_time::microsec_clock::local_time();
}
void print() const {
std::cout << *this << std::endl;
}
friend std::ostream& operator<<(std::ostream& stream, const Clock& clock) {
if (!clock.end_called)
clock.end();
if (!clock.end_called) {
stream << "end not called";
} else {
stream << clock.msg << ":" << clock.num_seconds() << "s";
}
return stream;
}
double num_seconds() const {
if (!end_called) return -1;
return (endTime - startTime).total_milliseconds() / 1000.;
}
private:
mutable boost::posix_time::ptime startTime, endTime;
mutable bool end_called;
std::string msg;
};
#endif // CLOCK_H_
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