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// Copyright (C) 2015-2017 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#pragma once
#include <cstdint>
class cpu_load_measurer {
public:
cpu_load_measurer(std::uint32_t _pid);
virtual ~cpu_load_measurer();
void start();
void stop();
void print_cpu_load() const;
double get_cpu_load() const;
private:
std::uint64_t read_proc_stat(std::uint64_t* _idle);
std::uint64_t read_proc_pid_stat();
bool read_clock_ticks();
private:
std::uint32_t pid_;
std::uint64_t jiffies_complete_start_;
std::uint64_t jiffies_idle_start_;
std::uint64_t jiffies_complete_stop_;
std::uint64_t jiffies_idle_stop_;
std::uint64_t clock_ticks_;
std::uint64_t jiffies_passed_pid_start_;
std::uint64_t jiffies_passed_pid_stop_;
double cpu_load_pid_;
double cpu_load_overall_;
double cpu_load_pid_wo_idle_;
};
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