mirror of https://github.com/CGAL/cgal
134 lines
3.7 KiB
C++
134 lines
3.7 KiB
C++
// Copyright (c) 2004 INRIA Sophia-Antipolis (France).
|
|
// All rights reserved.
|
|
//
|
|
// This file is part of CGAL (www.cgal.org); 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; version 2.1 of the License.
|
|
// See the file LICENSE.LGPL distributed with CGAL.
|
|
//
|
|
// Licensees holding a valid commercial license may use this file in
|
|
// accordance with the commercial license agreement provided with the software.
|
|
//
|
|
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
|
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
//
|
|
// Author(s) : Sylvain Pion, Andreas Fabri
|
|
|
|
#ifndef CGAL_MEMORY_SIZER_H
|
|
#define CGAL_MEMORY_SIZER_H
|
|
|
|
#include <CGAL/basic.h>
|
|
|
|
// This has only been implemented for Linux and VC++ for now.
|
|
#if !defined _MSC_VER && !defined __linux__
|
|
|
|
#include <iostream>
|
|
|
|
CGAL_BEGIN_NAMESPACE
|
|
|
|
struct Memory_sizer
|
|
{
|
|
typedef std::size_t size_type;
|
|
size_type virtual_size() const { return 0; }
|
|
size_type resident_size() const { return 0; }
|
|
};
|
|
|
|
CGAL_END_NAMESPACE
|
|
|
|
#else // defined _MSC_VER || defined __linux__
|
|
|
|
#if defined _MSC_VER
|
|
# include <windows.h>
|
|
# include "psapi.h"
|
|
#elif defined __linux__
|
|
# include <cstddef>
|
|
# include <cstdio>
|
|
# include <sys/types.h>
|
|
# include <sys/stat.h>
|
|
# include <fcntl.h>
|
|
# include <unistd.h>
|
|
#endif
|
|
|
|
CGAL_BEGIN_NAMESPACE
|
|
|
|
// A class giving access to the memory currently used by the process.
|
|
// Both the virtual memory size and the resident size.
|
|
// I put it in a class instead of free functions for similarity with Timer,
|
|
// and in case we want to store some state.
|
|
|
|
struct Memory_sizer
|
|
{
|
|
typedef std::size_t size_type;
|
|
|
|
size_type virtual_size() const { return get(true); }
|
|
size_type resident_size() const { return get(false); }
|
|
|
|
private:
|
|
|
|
size_type get (bool virtual_size) const
|
|
{
|
|
#ifdef _MSC_VER
|
|
DWORD pid = GetCurrentProcessId();
|
|
size_type result;
|
|
HANDLE hProcess;
|
|
PROCESS_MEMORY_COUNTERS pmc;
|
|
hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
|
|
PROCESS_VM_READ,
|
|
FALSE, pid );
|
|
if ( GetProcessMemoryInfo( hProcess, &pmc, sizeof(pmc)) )
|
|
{
|
|
result = (virtual_size)? pmc.PagefileUsage : pmc.WorkingSetSize;
|
|
}
|
|
|
|
CloseHandle( hProcess );
|
|
return result;
|
|
|
|
#else
|
|
// Extract of "man proc" under Linux :
|
|
//
|
|
// vsize %u Virtual memory size
|
|
//
|
|
// rss %u Resident Set Size: number of pages
|
|
// the process has in real memory,
|
|
// minus 3 for administrative purposes.
|
|
// This is just the pages which count
|
|
// towards text, data, or stack space.
|
|
// This does not include pages which
|
|
// have not been demand-loaded in, or
|
|
// which are swapped out.
|
|
|
|
int pid;
|
|
char name[1024];
|
|
char state;
|
|
int ppid, pgrp, session, tty, tpgid;
|
|
unsigned flags, minflt, cminflt, majflt, cmajflt;
|
|
int utime, stime, cutime, cstime, counter, priority, timeout;
|
|
unsigned itrealvalue, starttime, vsize = 0, rss = 0;
|
|
|
|
FILE *f = fopen("/proc/self/stat", "r");
|
|
CGAL_assertion(f);
|
|
fscanf(f, "%d %s %c %d %d %d %d %d %u "
|
|
"%u %u %u %u %d %d %d "
|
|
"%d %d %d %u %u %d "
|
|
"%u %u",
|
|
&pid, name, &state, &ppid, &pgrp, &session, &tty, &tpgid, &flags,
|
|
&minflt, &cminflt, &majflt, &cmajflt, &utime, &stime, &cutime,
|
|
&cstime, &counter, &priority, &timeout, &itrealvalue, &starttime,
|
|
&vsize, &rss);
|
|
|
|
fclose(f);
|
|
|
|
return virtual_size ? vsize : rss * getpagesize();
|
|
#endif
|
|
}
|
|
};
|
|
|
|
CGAL_END_NAMESPACE
|
|
|
|
#endif
|
|
|
|
#endif
|