RuntimeStats.hpp

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/*
 * Copyright (c) 2015 - 2024 Intel Corporation
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef RUNTIMESTATS_HPP_INCLUDE
#define RUNTIMESTATS_HPP_INCLUDE
 
#include <vector>
#include <string>
#include <cstdint>
 
namespace geopm
{
    class RuntimeStats
    {
        public:
            RuntimeStats() = delete;
            RuntimeStats(const std::vector<std::string> &metric_names);
            virtual ~RuntimeStats() = default;
            int num_metric(void) const;
            std::string metric_name(int metric_idx) const;
            uint64_t count(int metric_idx) const;
            double first(int metric_idx) const;
            double last(int metric_idx) const;
            double min(int metric_idx) const;
            double max(int metric_idx) const;
            double mean(int metric_idx) const;
            double std(int metric_idx) const;
            void reset(void);
            void update(const std::vector<double> &sample);
        private:
            void check_index(int metric_idx, const std::string &func, int line) const;
            struct stats_s {
                stats_s &operator=(const stats_s &other);
                uint64_t count;
                double first;
                double last;
                double min;
                double max;
                double m_1; // sum of all sampled values
                double m_2; // sum of the square of all sampled values
            };
            const std::vector<std::string> m_metric_names;
            std::vector<stats_s> m_metric_stats;
    };
}
 
#endif