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#ifndef TIMER_H_
#define TIMER_H_
#include <ctime>
#include <iostream>
#include <iomanip>
using namespace std;
/**
* Use time() call to keep track of elapsed time between creation and
* destruction. If verbose is true, Timer will print a message showing
* elapsed time to the given output stream upon destruction.
*/
class Timer {
public:
Timer(ostream& out = cout, const char *msg = "", bool verbose = true) :
_t(time(0)), _out(out), _msg(msg), _verbose(verbose) { }
/// Optionally print message
~Timer() {
if(_verbose) write(_out);
}
/// Return elapsed time since Timer object was created
time_t elapsed() const {
return time(0) - _t;
}
void write(ostream& out) {
time_t passed = elapsed();
// Print the message supplied at construction time followed
// by time elapsed formatted HH:MM:SS
unsigned int hours = (unsigned int)((passed / 60) / 60);
unsigned int minutes = (unsigned int)((passed / 60) % 60);
unsigned int seconds = (unsigned int)((passed % 60));
out << _msg << setfill ('0') << setw (2) << hours << ":"
<< setfill ('0') << setw (2) << minutes << ":"
<< setfill ('0') << setw (2) << seconds << endl;
}
private:
time_t _t;
ostream& _out;
const char *_msg;
bool _verbose;
};
static inline void logTime(std::ostream& os, bool nl = true) {
struct tm *current;
time_t now;
time(&now);
current = localtime(&now);
os << setfill('0') << setw(2)
<< current->tm_hour << ":"
<< setfill('0') << setw(2)
<< current->tm_min << ":"
<< setfill('0') << setw(2)
<< current->tm_sec;
if(nl) os << std::endl;
}
#endif /*TIMER_H_*/
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