Test-memInfo.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM 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 General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Application
 
Description
 
\*---------------------------------------------------------------------------*/
 
#include "memInfo.H"
#include "IOstreams.H"
#include "List.H"
#include "vector.H"
 
using namespace Foam;
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
//  Main program:
 
int main(int argc, char *argv[])
{
    const int n = 10000000;
    const char* const memTags = "peak/size/rss mem: ";
 
    memInfo mem;
 
    Info<< memTags << mem << endl;
    List<vector> lst(n, vector::one);
 
    Info<< "allocate " << n << " vectors" << nl
        << memTags << mem.update() << endl;
 
    lst.clear();
    Info<< "clear" << nl
        << memTags << mem.update() << endl;
 
    return 0;
}
 
 
// ************************************************************************* //