timer.hpp

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/* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.11 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
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    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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          disclaimer in the documentation and/or other materials provided with the distribution.
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          from this software without specific prior written permission.

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// Timers for simple measurements

class timer {
 private:
  double userTime;
  double systemTime;
 public:
  void start();
  void stop();
  void print();
  double seconds();
};


class elapsedTimer {
 private:
  long_int counter;
 public:
  elapsedTimer() : counter(0,0) {}
  void start();
  void stop();
  void print();
  double seconds();
};

// TimeStamp is used based on elapsed time and 
class TimeStamp {
 private:
  long_int counter;

 public:
  // Constructor
  TimeStamp();

  // update to current elapsed time
  void update();

  // returns seconds since updated
  double seconds();
};

// TraceTime is used for tracing the execution time of a block
// Usage:
//  { TraceTime t("block time")
//    some_code();
//  }
//

class TraceTime {
 private:
  bool   active;
  elapsedTimer t;
 public:
  TraceTime(char* title, bool doit = true);
  ~TraceTime();
};

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