Revision 01158b1ce1b225f46caad4bc9d321e4e6a14d8fa authored by Thomas Fischer on 07 December 2020, 10:50:49 UTC, committed by Thomas Fischer on 07 December 2020, 10:50:49 UTC
1 parent e087193
MemWatch.cpp
/**
* \file
* \author Thomas Fischer
* \date 2012-05-07
* \brief Implementation of the MemWatch class.
*
* \copyright
* Copyright (c) 2012-2020, 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 <fstream>
#include <string>
#include <sstream>
#include <sys/types.h>
#include <unistd.h>
#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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