///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2002-2025, Open Design Alliance (the "Alliance").
// All rights reserved.
//
// This software and its documentation and related materials are owned by
// the Alliance. The software may only be incorporated into application
// programs owned by members of the Alliance, subject to a signed
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable
// trade secrets of the Alliance and its suppliers. The software is also
// protected by copyright law and international treaty provisions. Application
// programs incorporating this software must include the following statement
// with their copyright notices:
//
//   This application incorporates Open Design Alliance software pursuant to a license
//   agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2025 by Open Design Alliance.
//   All rights reserved.
//
// By use of this software, its documentation or related materials, you
// acknowledge and accept the above terms.
///////////////////////////////////////////////////////////////////////////////

#include "TvAndMemoryStatus.h"
#include <unistd.h>
#include <ios>
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

TvAndMemoryStatus::TvAndMemoryStatus()
{
   double vm_usage = 0.0;
   double resident_set = 0.0;
   ifstream stat_stream("/proc/self/stat", ios_base::in); //get info from proc directory
   //create some variables to get info
   string pid, comm, state, ppid, pgrp, session, tty_nr;
   string tpgid, flags, minflt, cminflt, majflt, cmajflt;
   string utime, stime, cutime, cstime, priority, nice;
   string O, itrealvalue, starttime;
   unsigned long vsize;
   long rss;
   stat_stream >> pid >> comm >> state >> ppid >> pgrp >> session >> tty_nr
   >> tpgid >> flags >> minflt >> cminflt >> majflt >> cmajflt
   >> utime >> stime >> cutime >> cstime >> priority >> nice
   >> O >> itrealvalue >> starttime >> vsize >> rss;
   stat_stream.close();
   long page_size_kb = sysconf(_SC_PAGE_SIZE) / 1024; // for x86-64 is configured to use 2MB pages
   vm_usage = vsize / 1024.0;
   resident_set = rss * page_size_kb;
   m_iUsedMemory = (uint64)resident_set;
}