triangle/TimeRecord.h

//
// Created by zx on 22-11-3.
//

#ifndef SRC_LIO_LIVOX_SRC_UTILS_TIMERECORD_H_
#define SRC_LIO_LIVOX_SRC_UTILS_TIMERECORD_H_

#include <chrono>
#include <fstream>
#include <map>
#include <numeric>
#include <string>
#include <vector>

class TimeRecord
{
 public:
    struct Record {
        Record() = default;
        Record(const std::string& name, double time_usage) {
            func_name_ = name;
            time_usage_in_ms_.emplace_back(time_usage);
        }
        std::string func_name_;
        std::vector<double> time_usage_in_ms_;
    };

    template <class F>
    inline static void Evaluate(F&& func, const std::string& func_name)
    {
      auto t1 = std::chrono::high_resolution_clock::now();
      std::forward<F>(func)();
      auto t2 = std::chrono::high_resolution_clock::now();
      auto time_used = std::chrono::duration_cast<std::chrono::duration<double>>(t2 - t1).count() * 1000;

      if (records_.find(func_name) != records_.end()) {
        records_[func_name].time_usage_in_ms_.emplace_back(time_used);
      } else {
        records_.insert({func_name, Record(func_name, time_used)});
      }
    }
    static void PrintAll();
    static void DumpIntoFile(const std::string& file_name);
    static double GetMeanTime(const std::string& func_name);
 private:
    static std::map<std::string, Record> records_;


};


#endif //SRC_LIO_LIVOX_SRC_UTILS_TIMERECORD_H_