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//
// PerformanceMeasure.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2013-2017 Jean-Philippe Bruyère
//
// 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.
using System;
using System.Diagnostics;
namespace Crow
{
public class PerformanceMeasure : IValueChange {
#region IValueChange implementation
public event EventHandler<ValueChangeEventArgs> ValueChanged;
public virtual void NotifyValueChanged(string MemberName, object _value)
{
if (ValueChanged != null)
ValueChanged.Invoke(this, new ValueChangeEventArgs(MemberName, _value));
}
#endregion
public Stopwatch timer = new Stopwatch ();
public string Name;
public long current, minimum, maximum, total, cptMeasures;
public long cancelLimit;
public PerformanceMeasure(string name = "unamed", long _cancelLimit = 0){
Name = name;
cancelLimit = _cancelLimit;
ResetStats ();
}
public void StartCycle(){
timer.Restart();
}
public void StopCycle(){
timer.Stop();
computeStats ();
}
public void NotifyChanges(){
lock(this){
if (cptMeasures == 0)
return;
NotifyValueChanged("minimum", minimum);
NotifyValueChanged("maximum", maximum);
NotifyValueChanged("current", current);
// NotifyValueChanged("total", total);
// NotifyValueChanged("cptMeasures", cptMeasures);
NotifyValueChanged("mean", total / cptMeasures);
}
}
void computeStats(){
current = timer.ElapsedTicks;
if (current < cancelLimit)
return;
cptMeasures++;
total += timer.ElapsedTicks;
if (timer.ElapsedTicks < minimum)
minimum = timer.ElapsedTicks;
if (timer.ElapsedTicks > maximum)
maximum = timer.ElapsedTicks;
}
void ResetStats(){
Debug.WriteLine("reset measure cpt:{0}",cptMeasures);
cptMeasures = total = current = maximum = 0;
minimum = long.MaxValue;
}
void onResetClick(object sender, MouseButtonEventArgs e){
lock(this)
ResetStats();
}
}
}
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