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#pragma once
#include "appdata.h"
#include <util/system/datetime.h>
#include <library/cpp/actors/core/actor.h>
namespace NKikimr {
namespace NCpuTime {
class TCpuTimer {
ui64 GetCpuTime() const {
if (UseClockGettime) {
return ThreadCPUTime();
} else {
return GetCycleCountFast();
}
}
public:
TCpuTimer()
: UseClockGettime(AppData()->FeatureFlags.GetEnableClockGettimeForUserCpuAccounting())
, StartTime(GetCpuTime())
, Counter(nullptr)
{}
TCpuTimer(TDuration& counter)
: UseClockGettime(AppData()->FeatureFlags.GetEnableClockGettimeForUserCpuAccounting())
, StartTime(GetCpuTime())
, Counter(&counter)
{}
~TCpuTimer() {
if (Counter)
*Counter += GetTime();
}
TDuration GetTime() const {
if (UseClockGettime) {
return TDuration::MicroSeconds(GetCpuTime() - StartTime);
} else {
double time = NHPTimer::GetSeconds(GetCpuTime() - StartTime);
return TDuration::MicroSeconds(time * 1000000.0);
}
}
private:
const bool UseClockGettime;
const ui64 StartTime;
TDuration* Counter;
};
} // namespace NCpuTime
} // namespace NKikimr
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