/*

 * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_RUNTIME_OS_PERF_HPP

#define SHARE_VM_RUNTIME_OS_PERF_HPP

#include "utilities/macros.hpp"

#include "memory/allocation.inline.hpp"

#include "utilities/globalDefinitions.hpp"

#define FUNCTIONALITY_NOT_IMPLEMENTED -8

class EnvironmentVariable : public CHeapObj<mtInternal> {

 public:

  char* _key;

  char* _value;

  EnvironmentVariable() {

    _key = NULL;

    _value = NULL;

  }

  ~EnvironmentVariable() {

    if (_key != NULL) {

      FREE_C_HEAP_ARRAY(char, _key);

    }

    if (_value != NULL) {

      FREE_C_HEAP_ARRAY(char, _value);

    }

  }

  EnvironmentVariable(char* key, char* value) {

    _key = key;

    _value = value;

  }

};

class CPUInformation : public CHeapObj<mtInternal> {

 private:

  int   _no_of_sockets;

  int   _no_of_cores;

  int   _no_of_hw_threads;

  const char* _description;

  const char* _name;

 public:

  CPUInformation() {

    _no_of_sockets = 0;

    _no_of_cores = 0;

    _no_of_hw_threads = 0;

    _description = NULL;

    _name = NULL;

  }

  int number_of_sockets(void) const {

    return _no_of_sockets;

  }

  void set_number_of_sockets(int no_of_sockets) {

    _no_of_sockets = no_of_sockets;

  }

  int number_of_cores(void) const {

    return _no_of_cores;

  }

  void set_number_of_cores(int no_of_cores) {

    _no_of_cores = no_of_cores;

  }

  int number_of_hardware_threads(void) const {

    return _no_of_hw_threads;

  }

  void set_number_of_hardware_threads(int no_of_hw_threads) {

    _no_of_hw_threads = no_of_hw_threads;

  }

  const char* cpu_name(void)  const {

    return _name;

  }

  void set_cpu_name(const char* cpu_name) {

    _name = cpu_name;

  }

  const char* cpu_description(void) const {

    return _description;

  }

  void set_cpu_description(const char* cpu_description) {

    _description = cpu_description;

  }

};

class SystemProcess : public CHeapObj<mtInternal> {

 private:

  int   _pid;

  char* _name;

  char* _path;

  char* _command_line;

  SystemProcess* _next;

 public:

  SystemProcess() {

    _pid  = 0;

    _name = NULL;

    _path = NULL;

    _command_line = NULL;

    _next = NULL;

  }

  SystemProcess(int pid, char* name, char* path, char* command_line, SystemProcess* next) {

    _pid = pid;

    _name = name;

    _path = path;

    _command_line = command_line;

    _next = next;

  }

  void set_next(SystemProcess* sys_process) {

    _next = sys_process;

  }

  SystemProcess* next(void) const {

    return _next;

  }

  int pid(void) const {

    return _pid;

  }

  void set_pid(int pid) {

    _pid = pid;

  }

  const char* name(void) const {

    return _name;

  }

  void set_name(char* name) {

    _name = name;

  }

  const char* path(void) const {

    return _path;

  }

  void set_path(char* path) {

    _path = path;

  }

  const char* command_line(void) const {

    return _command_line;

  }

  void set_command_line(char* command_line) {

    _command_line = command_line;

  }

  virtual ~SystemProcess(void) {

    if (_name != NULL) {

      FREE_C_HEAP_ARRAY(char, _name);

    }

    if (_path != NULL) {

      FREE_C_HEAP_ARRAY(char, _path);

    }

    if (_command_line != NULL) {

      FREE_C_HEAP_ARRAY(char, _command_line);

    }

  }

};

class CPUInformationInterface : public CHeapObj<mtInternal> {

 private:

  CPUInformation* _cpu_info;

 public:

  CPUInformationInterface();

  bool initialize();

  ~CPUInformationInterface();

  int cpu_information(CPUInformation& cpu_info);

};

class CPUPerformanceInterface : public CHeapObj<mtInternal> {

 private:

  class CPUPerformance;

  CPUPerformance* _impl;

 public:

  CPUPerformanceInterface();

  ~CPUPerformanceInterface();

  bool initialize();

  int cpu_load(int which_logical_cpu, double* const cpu_load) const;

  int context_switch_rate(double* const rate) const;

  int cpu_load_total_process(double* const cpu_load) const;

  int cpu_loads_process(double* const pjvmUserLoad,

                        double* const pjvmKernelLoad,

                        double* const psystemTotalLoad) const;

};

class SystemProcessInterface : public CHeapObj<mtInternal> {

 private:

   class SystemProcesses;

   SystemProcesses* _impl;

 public:

   SystemProcessInterface();

   ~SystemProcessInterface();

   bool initialize();

  // information about system processes

  int system_processes(SystemProcess** system_procs, int* const no_of_sys_processes) const;

};

#endif // SHARE_VM_RUNTIME_OS_PERF_HPP