Util/Stopwatch.cs

   1 //
   2 // Stopwatch.cs
   3 //
   4 // Copyright (C) 2004 Novell, Inc.
   5 //
   6
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining a
   9 // copy of this software and associated documentation files (the "Software"),
  10 // to deal in the Software without restriction, including without limitation
  11 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12 // and/or sell copies of the Software, and to permit persons to whom the
  13 // Software is furnished to do so, subject to the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be included in
  16 // all copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24 // DEALINGS IN THE SOFTWARE.
  25 //
  26
  27 using System;
  28
  29 namespace Beagle.Util {
  30
  31         public class Stopwatch {
  32
  33                 private double elapsed = 0;
  34                 private bool running = false;
  35                 private DateTime startTime;
  36
  37                 public void Start ()
  38                 {
  39                         if (! running) {
  40                                 running = true;
  41                                 startTime = DateTime.Now;
  42                         }
  43                 }
  44
  45                 private double SinceStart {
  46                         get { return running ? (DateTime.Now - startTime).TotalSeconds : 0; }
  47                 }
  48
  49                 public void Stop ()
  50                 {
  51                         if (running) {
  52                                 elapsed += SinceStart;
  53                                 running = false;
  54                         }
  55                 }
  56
  57                 public void Reset ()
  58                 {
  59                         Stop ();
  60                         elapsed = 0;
  61                 }
  62
  63                 public void Restart ()
  64                 {
  65                         Reset ();
  66                         Start ();
  67                 }
  68
  69                 public bool IsRunning {
  70                         get { return running; }
  71                 }
  72
  73                 public double ElapsedTime {
  74                         get { return elapsed + SinceStart; }
  75                 }
  76
  77                 public override string ToString ()
  78                 {
  79                         return String.Format ("{0:.00}s", ElapsedTime);
  80                 }
  81         }
  82 }