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#include "timer.h"
#include <time.h>
#include <iomanip>
u64bit Timer::get_clock()
{
struct timespec tv;
clock_gettime(CLOCK_REALTIME, &tv);
return (tv.tv_sec * 1000000000ULL + tv.tv_nsec);
}
Timer::Timer(const std::string& n) : name(n)
{
time_used = 0;
timer_start = 0;
event_count = 0;
}
void Timer::start()
{
stop();
timer_start = get_clock();
}
void Timer::stop()
{
if(timer_start)
{
u64bit now = get_clock();
if(now > timer_start)
time_used += (now - timer_start);
timer_start = 0;
++event_count;
}
}
std::ostream& operator<<(std::ostream& out, Timer& timer)
{
//out << timer.value() << " ";
int events_per_second = timer.events() / timer.seconds();
out << events_per_second << " " << timer.get_name() << " per second; ";
if(timer.seconds_per_event() < 10)
out << std::setprecision(2) << std::fixed
<< timer.ms_per_event() << " ms/" << timer.get_name();
else
out << std::setprecision(4) << std::fixed
<< timer.seconds_per_event() << " s/" << timer.get_name();
if(timer.seconds() < 10)
out << " (" << timer.events() << " ops in "
<< timer.milliseconds() << " ms)";
else
out << " (" << timer.events() << " ops in "
<< timer.seconds() << " s)";
return out;
}
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