1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
//
// System.Diagnostics.Stopwatch.cs
//
// Authors:
// Zoltan Varga (vargaz@gmail.com)
// Atsushi Enomoto <atsushi@ximian.com>
//
// (C) 2006 Novell, Inc.
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
namespace System.Diagnostics
{
public class Stopwatch
{
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public static extern long GetTimestamp ();
public static readonly long Frequency = 10000000;
public static readonly bool IsHighResolution = true;
public static Stopwatch StartNew ()
{
Stopwatch s = new Stopwatch ();
s.Start ();
return s;
}
public Stopwatch ()
{
}
long elapsed;
long started;
bool is_running;
public TimeSpan Elapsed {
get {
if (IsHighResolution) {
// convert our ticks to TimeSpace ticks, 100 nano second units
// using two divisions helps avoid overflow
return TimeSpan.FromTicks ((long)(ElapsedTicks / (Frequency / TimeSpan.TicksPerSecond)));
}
else {
return TimeSpan.FromTicks (ElapsedTicks);
}
}
}
public long ElapsedMilliseconds {
get {
checked {
if (IsHighResolution) {
return (long)(ElapsedTicks / (Frequency / 1000));
}
else {
return (long) Elapsed.TotalMilliseconds;
}
}
}
}
public long ElapsedTicks {
get { return is_running ? GetTimestamp () - started + elapsed : elapsed; }
}
public bool IsRunning {
get { return is_running; }
}
public void Reset ()
{
elapsed = 0;
is_running = false;
}
public void Start ()
{
if (is_running)
return;
started = GetTimestamp ();
is_running = true;
}
public void Stop ()
{
if (!is_running)
return;
elapsed += GetTimestamp () - started;
is_running = false;
}
}
}
#endif
|
