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/*
* Clock.h
*
* Created on: Jun 17, 2014
* Author: dsalinas
*/
#ifndef GUDHI_CLOCK_H_
#define GUDHI_CLOCK_H_
#include <boost/date_time/posix_time/posix_time.hpp>
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 /* GUDHI_CLOCK_H_ */
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