https://notnul.com/ScriptResource.axd?d=g9hYDpYlApHMzaJCMmG-mQYeYo…X6M4OaMNH5-dZ9es78gVkUeLRrS8KYg2&t=51e37521

1// Name:        Seadragon.Seadragon.Profiler.debug.js
2// Assembly:    AjaxControlToolkit
3// Version:     4.1.7.1213
4// FileVersion: 4.1.7.1213
5// (c) 2010 CodePlex Foundation
6Type.registerNamespace('Sys.Extended.UI.Seadragon');
7
8Sys.Extended.UI.Seadragon.Profiler = function() {
9
10    this._midUpdate = false;
11    this._numUpdates = 0;
12
13    this._lastBeginTime = null;
14    this._lastEndTime = null;
15
16    this._minUpdateTime = Infinity;
17    this._avgUpdateTime = 0;
18    this._maxUpdateTime = 0;
19
20    this._minIdleTime = Infinity;
21    this._avgIdleTime = 0;
22    this._maxIdleTime = 0;
23};
24Sys.Extended.UI.Seadragon.Profiler.prototype = {
25
26    getAvgUpdateTime: function() {
27        return this._avgUpdateTime;
28    },
29
30    getMinUpdateTime: function() {
31        return this._minUpdateTime;
32    },
33
34    getMaxUpdateTime: function() {
35        return this._maxUpdateTime;
36    },
37
38
39    getAvgIdleTime: function() {
40        return this._avgIdleTime;
41    },
42
43    getMinIdleTime: function() {
44        return this._minIdleTime;
45    },
46
47    getMaxIdleTime: function() {
48        return this._maxIdleTime;
49    },
50
51
52    isMidUpdate: function() {
53        return this._midUpdate;
54    },
55
56    getNumUpdates: function() {
57        return this._numUpdates;
58    },
59
60
61    beginUpdate: function() {
62        if (this._midUpdate) {
63            this.endUpdate();
64        }
65
66        this._midUpdate = true;
67        this._lastBeginTime = new Date().getTime();
68
69        if (this._numUpdates < 1) {
70            return;     // this is the first update
71        }
72
73        var time = this._lastBeginTime - this._lastEndTime;
74
75        this._avgIdleTime = (this._avgIdleTime * (this._numUpdates - 1) + time) / this._numUpdates;
76
77        if (time < this._minIdleTime) {
78            this._minIdleTime = time;
79        }
80        if (time > this._maxIdleTime) {
81            this._maxIdleTime = time;
82        }
83    },
84
85    endUpdate: function() {
86        if (!this._midUpdate) {
87            return;
88        }
89
90        this._lastEndTime = new Date().getTime();
91        this._midUpdate = false;
92
93        var time = this._lastEndTime - this._lastBeginTime;
94
95        this._numUpdates++;
96        this._avgUpdateTime = (this._avgUpdateTime * (this._numUpdates - 1) + time) / this._numUpdates;
97
98        if (time < this._minUpdateTime) {
99            this._minUpdateTime = time;
100        }
101        if (time > this._maxUpdateTime) {
102            this._maxUpdateTime = time;
103        }
104    },
105
106    clearProfile: function() {
107        this._midUpdate = false;
108        this._numUpdates = 0;
109
110        this._lastBeginTime = null;
111        this._lastEndTime = null;
112
113        this._minUpdateTime = Infinity;
114        this._avgUpdateTime = 0;
115        this._maxUpdateTime = 0;
116
117        this._minIdleTime = Infinity;
118        this._avgIdleTime = 0;
119        this._maxIdleTime = 0;
120    }
121};
122Sys.Extended.UI.Seadragon.Profiler.registerClass('Sys.Extended.UI.Seadragon.Profiler', null, Sys.IDisposable);