stopwatch.h

Go to the documentation of this file.

#ifndef STOPWATCH_CLASS
#define STOPWATCH_CLASS
 
/*
 *  Name   : stopwatch
 *  Author : Chris Koeritz
 *
 * Copyright (c) 1991-$now By Author.  This program is free software; you can
 * redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of
 * the License or (at your option) any later version.  This is online at:
 *     http://www.fsf.org/copyleft/gpl.html
 * Please send any updates to: fred@gruntose.com
 */
 
#include "time_stamp.h"
 
namespace timely {
 
 
class stopwatch : public virtual basis::root_object
{
public:
  stopwatch();
  stopwatch(const stopwatch &to_copy);
 
  virtual ~stopwatch();
 
  stopwatch &operator =(const stopwatch &to_copy);
 
  void start();
 
  void halt();
 
  void stop() { halt(); }
 
  void reset();
 
  int milliseconds();
  int elapsed() { return milliseconds(); }
 
private:
  enum stopwatch_kinds { UNSTARTED, RUNNING, STOPPED };  
  stopwatch_kinds _status;  
  time_stamp *_start_time;  
  time_stamp *_stop_time;  
  int _total_so_far;  
 
  int common_measure();
 
  int compute_diff(const time_stamp &t1, const time_stamp &t2);
};
 
 
 
#define TIME_CHECK_BEGIN \
  stopwatch t; \
  t.start();
#define TIME_CHECK_END(logger, who, msec_limit, what, filter) { \
  t.halt(); \
  if (t.milliseconds() > msec_limit) { \
    (logger).log( a_sprintf("TIME_CHECK: %s: %d ms wait for %s.", \
        (who), t.milliseconds(), (what)), filter); \
  } \
}
 
} //namespace.
 
#endif