Timestamp.hpp

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 /*
 * Timestamp.h
 *
 *  Created on: 14.01.2011
 *      Author: Thomas Wiemann
 */

#ifndef TIMESTAMP_H_
#define TIMESTAMP_H_

#include <iostream>
#include <string>

using std::ostream;
using std::string;

namespace lvr2 {

class Timestamp
{
public:

        Timestamp();

        unsigned long  getCurrentTimeInMs() const;

        unsigned long  getElapsedTimeInMs() const;

        double             getCurrentTimeinS() const;

        double             getElapsedTimeInS() const;

        void               resetTimer();
        
        void               setQuiet(bool quiet) { m_quiet = quiet;};

        string             getElapsedTime() const;
        
        bool               isQuiet() {return m_quiet;};
        
        ostream&       getNullStream() { return m_nullStream; };
        

private:
        
        class NullBuffer : public std::streambuf
        {
                public:
                        int overflow(int c) { return c; }
        };

        unsigned long   m_startTime;
        bool                    m_quiet;
        NullBuffer              m_nullBuffer;
        std::ostream    m_nullStream;
};

static Timestamp timestamp;

inline ostream& operator<<(ostream& os, Timestamp &ts)
{
        if(ts.isQuiet())
        {
                return ts.getNullStream();
        }
        else
        {
                os << ts.getElapsedTime();
                return os;
        }
}

} // namespace lvr

#endif /* TIMESTAMP_H_ */