lseb/common/frequency_meter.h at master · giacomini/lseb

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#ifndef COMMON_FREQUENCY_METER_H

#define COMMON_FREQUENCY_METER_H

#include <chrono>

#include <cassert>

namespace lseb {

class FrequencyMeter {

double m_counter;

double const m_timeout;

std::chrono::high_resolution_clock::time_point m_start_time;

public:

FrequencyMeter(double seconds)

: m_counter(0.0),

m_timeout(seconds),

m_start_time(std::chrono::high_resolution_clock::now()) {

assert(m_timeout > 0.0);

}

void add(double value) {

assert(value >= 0.0 && "Trying to add a negative value");

m_counter += value;

}

bool check() {

auto end_time = std::chrono::high_resolution_clock::now();

double const elapsed_seconds = std::chrono::duration<double>(

end_time - m_start_time).count();

return elapsed_seconds >= m_timeout ? true : false;

}

double frequency() {

auto end_time = std::chrono::high_resolution_clock::now();

double const elapsed_seconds = std::chrono::duration<double>(

end_time - m_start_time).count();

double const frequency = m_counter / elapsed_seconds;

m_start_time = std::chrono::high_resolution_clock::now();

m_counter = 0.0;

return frequency;

}

FrequencyMeter(const FrequencyMeter&) = delete; // disable copying

FrequencyMeter& operator=(const FrequencyMeter&) = delete; // disable assignment

};

}

#endif