mcs/class/System/System.Diagnostics/Stopwatch.cs

   1 //
   2 // System.Diagnostics.Stopwatch.cs
   3 //
   4 // Authors:
   5 //   Zoltan Varga (vargaz@gmail.com)
   6 //   Atsushi Enomoto  <atsushi@ximian.com>
   7 //
   8 // (C) 2006 Novell, Inc.
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 #if NET_2_0
  33
  34 using System;
  35 using System.ComponentModel;
  36
  37 namespace System.Diagnostics
  38 {
  39         public class Stopwatch
  40         {
  41                 [MonoTODO ("high resolution mode support")]
  42                 public static readonly long Frequency;
  43
  44                 [MonoTODO ("high resolution mode support")]
  45                 public static readonly bool IsHighResolution;
  46
  47                 [MonoTODO ("high resolution mode support")]
  48                 public static long GetTimestamp ()
  49                 {
  50                         return DateTime.Now.Ticks;
  51                 }
  52
  53                 public static Stopwatch StartNew ()
  54                 {
  55                         Stopwatch s = new Stopwatch ();
  56                         s.Start ();
  57                         return s;
  58                 }
  59
  60                 static Stopwatch ()
  61                 {
  62                         Frequency = TimeSpan.TicksPerSecond;
  63                         IsHighResolution = false;
  64                 }
  65
  66                 public Stopwatch ()
  67                 {
  68                 }
  69
  70                 long elapsed;
  71                 long started;
  72                 bool is_running;
  73
  74                 [MonoTODO ("high resolution mode support")]
  75                 public TimeSpan Elapsed {
  76                         get { return TimeSpan.FromTicks (ElapsedTicks); }
  77                 }
  78
  79                 [MonoTODO ("high resolution mode support")]
  80                 public long ElapsedMilliseconds {
  81                         get { checked { return (long) Elapsed.TotalMilliseconds; } }
  82                 }
  83
  84                 public long ElapsedTicks {
  85                         get { return is_running ? GetTimestamp () - started + elapsed : elapsed; }
  86                 }
  87
  88                 public bool IsRunning {
  89                         get { return is_running; }
  90                 }
  91
  92                 public void Reset ()
  93                 {
  94                         elapsed = 0;
  95                         is_running = false;
  96                 }
  97
  98                 public void Start ()
  99                 {
 100                         if (is_running)
 101                                 return;
 102                         started = GetTimestamp ();
 103                         is_running = true;
 104                 }
 105
 106                 public void Stop ()
 107                 {
 108                         if (!is_running)
 109                                 return;
 110                         elapsed += GetTimestamp () - started;
 111                         is_running = false;
 112                 }
 113         }
 114 }
 115
 116 #endif