#ifndef TIMER_HEADER
#define TIMER_HEADER
/* Simple timer class by Roman Dementiev
*/
#include "../common/utils.h"
#include <time.h>
#include <sys/time.h>
__STXXL_BEGIN_NAMESPACE
class timer
{
bool running;
double accumulated;
double last_clock;
double timestamp();
public:
timer();
void start();
void stop();
void reset();
double seconds();
double mseconds();
double useconds();
};
timer::timer():running(false),accumulated(0.)
{
}
double timer::timestamp()
{
struct timeval tp;
gettimeofday(&tp, NULL);
return double(tp.tv_sec) + tp.tv_usec / 1000000.;
}
void timer::start()
{
running = true;
last_clock = timestamp();
}
void timer::stop()
{
running = false;
accumulated += timestamp() - last_clock;
}
void timer::reset()
{
accumulated = 0.;
last_clock = timestamp();
}
double timer::mseconds()
{
if(running)
return (accumulated + timestamp() - last_clock)*1000.;
return (accumulated*1000.);
}
double timer::useconds()
{
if(running)
return (accumulated + timestamp() - last_clock)*1000000.;
return (accumulated*1000000.);
}
double timer::seconds()
{
if(running)
return (accumulated + timestamp() - last_clock);
return (accumulated);
}
__STXXL_END_NAMESPACE
#endif