/* Copyright LAAS, CNRS

 * Author: O. Stasse, 2019

 * See LICENSE file in the root directory of this repository.

 */

#ifndef DYNAMIC_GRAPH_PROCESS_LIST_H_

#define DYNAMIC_GRAPH_PROCESS_LIST_H_

#include <dynamic-graph/dynamic-graph-api.h>

#include <boost/archive/text_iarchive.hpp>

#include <boost/archive/text_oarchive.hpp>

#include <boost/serialization/vector.hpp>

#include <dynamic-graph/fwd.hh>

namespace dynamicgraph {

namespace CPU {

class DYNAMIC_GRAPH_DLLAPI ProcessData {};

class DYNAMIC_GRAPH_DLLAPI ProcessList {

 public:

  ProcessList();

};

/// This class gather information on a specific CPU.

///

class DYNAMIC_GRAPH_DLLAPI CPUData {

 public:

  CPUData();

  int cpu_id_;

                                              unsigned long long int &b) {

  }

  /// \brief Various classes of time spend by the CPU

  /// @{

  /// Total time

  unsigned long long int total_time_;

  /// Time spend in user mode

  unsigned long long int user_mode_time_;

  /// Time spend in user mode with low priority (nice mode)

  unsigned long long int nice_time_;

  /// Time spend in system mode

  unsigned long long int system_time_;

  /// Time spend in system mode

  unsigned long long int system_all_time_;

  /// Time spend in doing nothing.

  unsigned long long int idle_time_;

  /// Time spend in doing nothing.

  unsigned long long int idle_all_time_;

  /// Time spend in waiting an input/output to complete.

  unsigned long long int iowait_time_;

  /// Time spend in servicing hardware interrupts.

  unsigned long long int irq_time_;

  /// Time spend in servicing software interrupts.

  unsigned long long int softirq_time_;

  /// Time spend in other operating systems in a virtualized environments

  /// Never doing this for control !

  unsigned long long int steal_time_;

  /// Time spend running a virtual CPU for guest operating systems

  /// under the control of the Linux kernel

  unsigned long long int guest_time_;

  /// Time spent running a niced guest

  /// (virtual CPU for guest operating systems under the

  /// control of the Linux kernel)

  unsigned long long int guest_nice_time_;

  /// @}

  /// \brief Various classes of time spend by the CPU by period

  /// @{

  /// Total time

  unsigned long long int total_period_;

  /// Time spend in user mode

  unsigned long long int user_mode_period_;

  /// Time spend in user mode with low priority (nice mode)

  unsigned long long int nice_period_;

  /// Time spend in system mode

  unsigned long long int system_period_;

  /// Time spend in all system mode

  unsigned long long int system_all_period_;

  /// Time spend in doing nothing.

  unsigned long long int idle_period_;

  /// Time spend in doing nothing.

  unsigned long long int idle_all_period_;

  /// Time spend in waiting an input/output to complete.

  unsigned long long int iowait_period_;

  /// Time spend in servicing hardware interrupts.

  unsigned long long int irq_period_;

  /// Time spend in servicing software interrupts.

  unsigned long long int softirq_period_;

  /// Time spend in other operating systems in a virtualized environments

  /// Never doing this for control !

  unsigned long long int steal_period_;

  /// Time spend running a virtual CPU for guest operating systems

  /// under the control of the Linux kernel

  unsigned long long int guest_period_;

  /// @}

  double percent_;

  void ProcessLine(std::istringstream &aCPULine);

  friend class boost::serialization::access;

  template <class Archive>

};

/// This class gathers information on a computer.

/// This includes a list of CPU

class DYNAMIC_GRAPH_DLLAPI System {

 private:

  bool init_;

 public:

  System();

  /// Read /proc/state file to extract CPU count.

  void init();

  /// Update CPU data information from /proc/stat

  void readProcStat();

  /// Friend class for serialization.

  friend class boost::serialization::access;

  /// Number of CPU.

  unsigned int cpuNb_;

  void ProcessCPULine(unsigned int cpunb, std::istringstream &aCPULine);

  /// \brief Vector of CPU informations.

  std::vector<CPUData> vCPUData_;

  /// \brief Global CPU information.

  CPUData gCPUData_;

  template <class Archive>

};

}  // namespace CPU

}  // namespace dynamicgraph

#endif /* DYNAMIC_GRAPH_PROCESS_LIST_H_ */