Tracing.hh

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//=============================================================================
//
//  CLASS Tracing
//
//=============================================================================


#ifndef ACG_TRACING_HH
#define ACG_TRACING_HH


//== INCLUDES =================================================================

#include "StopWatch.hh"
#include <iostream>
#include <string>
#include "../Config/ACGDefines.hh"


//== NAMESPACES ===============================================================

namespace ACG {


//== HELPER MACROS ============================================================


#define ACG_TRACE(_text) ACG::Tracing acg_tracer__(_text)
#define ACG_TRACE_CMD(_text, _cmd) { ACG_TRACE(_text); cmd; }

#define ACG_TIMED_TRACE(_text) ACG::TimedTracing acg_tracer__(_text)
#define ACG_TIMED_TRACE_CMD(_text, _cmd) { ACG_TIMED_TRACE(_text); _cmd; }

#define ACG_TRACE_PROGRESS acg_tracer__.progress()


//== CLASS DEFINITION =========================================================


class ACGDLLEXPORT Tracing
{
public:

  Tracing(const std::string& _text,
          std::ostream&      _os = std::cerr)
    : os_(_os)
  { os_ << _text << "  " << std::flush; }


  ~Tracing() { os_ << "finished.\n" << std::flush; }


  void progress() {
    os_ << progress_[((++idx_)&=0x3)] << "\b" << std::flush;
  }


protected:

  std::ostream&  os_;
  static char    progress_[4];
  static unsigned char idx_;
};


//== CLASS DEFINITION =========================================================



class ACGDLLEXPORT TimedTracing : public Tracing
{
public:

  TimedTracing( const std::string& _text,
                std::ostream&      _os = std::cerr )
    : Tracing(_text, _os)
  { timer_.start(); }


  ~TimedTracing()
  {
    os_ << timer_.stop()*0.001 << " secs, ";
  }

private:

  StopWatch timer_;
};



//=============================================================================
} // namespace ACG
//=============================================================================
#endif // ACG_TRACING_HH defined
//=============================================================================