wocra/include/wocra/Performances.h

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#ifndef __PERFORMANCES_H__
#define __PERFORMANCES_H__

#include <sys/time.h>

#include <list>

#include <iostream>

namespace wocra
{

class PerformanceRecorder
{
public:

    PerformanceRecorder()           { initializeTime(); };

    virtual ~PerformanceRecorder()  {};

    double getCurrentTime() {
        gettimeofday(&tim, NULL);
        return tim.tv_sec+(tim.tv_usec/1000000.0);
    };

    void initializeTime() {
        _initTime = getCurrentTime();
    };

    void saveRelativeTime() {
        double t = getCurrentTime();
        _record.push_back( t - _initTime );
    };

    double getRelativeTime() {
        return getCurrentTime() - _initTime;
    };

    void saveTime(double t)
    {
        _record.push_back( t );
    }

    const std::list< double >& getSavedTime() const {
        return _record;
    }

    void writeInStream(const std::string& headerName, std::ostream& outstream, bool addCommaAtEnd) {
        outstream << "\"" <<headerName << "\": [";

        std::list< double >::const_iterator it_1 = --_record.end();
        for (std::list< double >::const_iterator it = _record.begin(); it != _record.end(); ++it)
        {
            outstream << *it;
            if ( it != it_1)
                outstream << ", ";
        }
        if (addCommaAtEnd == true)
            outstream << "],\n";
        else
            outstream << "]\n";
    }

protected:
    timeval tim;

    double _initTime;

    std::list< double > _record;
};

 // end group core


}

#endif