UProcessInfo.cpp

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/*
*  utilite is a cross-platform library with
*  useful utilities for fast and small developing.
*  Copyright (C) 2010  Mathieu Labbe
*
*  utilite is free library: you can redistribute it and/or modify
*  it under the terms of the GNU Lesser General Public License as published by
*  the Free Software Foundation, either version 3 of the License, or
*  (at your option) any later version.
*
*  utilite 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 Lesser General Public License for more details.
*
*  You should have received a copy of the GNU Lesser General Public License
*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#include "rtabmap/utilite/UProcessInfo.h"
 
#ifdef _WIN32
#include "Windows.h"
#include "Psapi.h"
#elif __APPLE__
#include <sys/resource.h>
#else
#include <fstream>
#include <stdlib.h>
#include "rtabmap/utilite/UStl.h"
#endif
 
UProcessInfo::UProcessInfo() {}
 
UProcessInfo::~UProcessInfo() {}
 
// return in bytes
long int UProcessInfo::getMemoryUsage()
{
        long int memoryUsage = -1;
 
#ifdef _WIN32
                HANDLE hProc = GetCurrentProcess();
                PROCESS_MEMORY_COUNTERS info;
                BOOL okay = GetProcessMemoryInfo(hProc, &info, sizeof(info));
                if(okay)
                {
                        memoryUsage = info.WorkingSetSize;
                }
#elif __APPLE__
                rusage u;
                if(getrusage(RUSAGE_SELF, &u) == 0)
                {
                        memoryUsage = u.ru_maxrss;
                }
#else
                std::fstream file("/proc/self/status", std::fstream::in);
                if(file.is_open())
                {
                        std::string bytes;
                        while(std::getline(file, bytes))
                        {
                                if(bytes.find("VmRSS") != bytes.npos)
                                {
                                        std::list<std::string> strs = uSplit(bytes, ' ');
                                        if(strs.size()>1)
                                        {
                                                memoryUsage = atol(uValueAt(strs,1).c_str()) * 1024;
                                        }
                                        break;
                                }
                        }
                        file.close();
                }
#endif
 
        return memoryUsage;
}