Revision 3aa616282b380f949257a2f086017170e352aa99 authored by renchao_lu on 24 June 2021, 18:50:34 UTC, committed by renchao_lu on 27 June 2021, 11:18:32 UTC
1 parent 9baf475
MemWatch.cpp
/**
* \file
* \author Thomas Fischer
* \date 2012-05-07
* \brief Implementation of the MemWatch class.
*
* \copyright
* Copyright (c) 2012-2021, OpenGeoSys Community (http://www.opengeosys.org)
* Distributed under a Modified BSD License.
* See accompanying file LICENSE.txt or
* http://www.opengeosys.org/project/license
*
*/
#include "MemWatch.h"
#if !defined(_WIN32) && !defined(__APPLE__) && !defined(__MINGW32__)
#include <sys/types.h>
#include <unistd.h>
#include <fstream>
#include <sstream>
#include <string>
#endif
namespace BaseLib
{
MemWatch::MemWatch()
{
updateMemUsage();
}
unsigned MemWatch::updateMemUsage()
{
#if !defined(_WIN32) && !defined(__APPLE__) && !defined(__MINGW32__)
std::string fname("/proc/");
std::stringstream str_pid;
str_pid << static_cast<unsigned>(getpid());
fname += str_pid.str();
fname += "/statm";
unsigned pages;
std::ifstream in(fname.c_str(), std::ios::in);
if (!in.is_open())
{
perror("open");
return 1;
}
in >> pages;
vmem_size_ = static_cast<unsigned long>(pages) *
static_cast<unsigned long>(getpagesize());
in.close();
#endif
return 0;
}
unsigned long MemWatch::getVirtMemUsage()
{
updateMemUsage();
return vmem_size_;
}
} // end namespace BaseLib
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