S>void somewhere()
S>{
S> for(...)
S> {
S>   Someclass *sc = new Someclass();
S>   ...
S>   delete sc;
S> }
S>}
S>

S>class CLogger
S>{
S>public:
S>    CLogger() {m_filename = ".application.log"; start() << "Opening log."; stop();};
S>    ~CLogger(){ start() << "Closing log."; stop(); };

S>    CLogger &start() { m_mutex.lock(); m_logstream.open(m_filename, std::ofstream::out | std::ofstream::ate | std::ofstream::app); return *this; }
S>    void      stop() { m_logstream << std::endl; m_logstream.close(); m_mutex.unlock();}
S>    template <class T> CLogger &operator<<(const T &value) { m_logstream << value; return *this; }
S>private:
S>    std::string   m_filename;
S>    std::ofstream m_logstream;
S>    std::mutex    m_mutex;
S>};

S>class CSingleTone
S>{
S>public:
S>  CLogger *logger() { if(!m_logger) {m_logger = new CLogger(); } return m_logger; };
S>  static CSingleTone *instance();
S>private:
S>  CLogger *m_logger;
S>}

S>Someclass
S>{
S>  Someclass() { CSingleTone::instance()->logger()->start() << "construct"; CSingleTone::instance()->logger()->stop(); }
S>  ~Someclass() { CSingleTone::instance()->logger()->start() << "destruct"; CSingleTone::instance()->logger()->stop(); }
S>}

S>void somewhere()
S>{
S> for(...)
S> {
S>   Someclass *sc = new Someclass();
S>   ...
S>   delete sc;
S> }
S>}
S>

S>class CSingleTone
S>{
S>public:
S>  CLogger *logger() { if(!m_logger) {m_logger = new CLogger(); } return m_logger; };
S>  static CSingleTone *instance();
S>private:
S>  CLogger *m_logger;
S>}
S>