G4MemStat.hh

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// Author: Mathieu Karamitros

// The code is developed in the framework of the ESA AO7146
//
// We would be very happy hearing from you, send us your feedback! :)
//
// In order for Geant4-DNA to be maintained and still open-source,
// article citations are crucial. 
// If you use Geant4-DNA chemistry and you publish papers about your software, 
// in addition to the general paper on Geant4-DNA:
//
// Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
//
// we would be very happy if you could please also cite the following
// reference papers on chemistry:
//
// J. Comput. Phys. 274 (2014) 841-882
// Prog. Nucl. Sci. Tec. 2 (2011) 503-508 

#ifndef G4MEMSTAT_HH_
#define G4MEMSTAT_HH_

#include "globals.hh"

namespace G4MemStat
{

    struct MemStat;

    std::ostream & operator<<(std::ostream &os, const MemStat& p);

    struct MemStat
    {

        friend std::ostream & operator<<(std::ostream &os, const MemStat& p);
        double vmz;
        double mem;

        MemStat() : vmz(0), mem(0)
        {;}
        MemStat(const MemStat& right)
        {
            vmz = right.vmz;
            mem = right.mem;
        }

        MemStat operator-(const MemStat& right)
        {
            MemStat output;
            output.vmz = this->vmz-right.vmz;
            output.mem = this->mem-right.mem;
            return output;
        }
    };

    MemStat MemoryUsage();

    std::ostream & operator<<(std::ostream &os, const MemStat& p);
}
#endif /* MEMSTAT_HH_ */