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//
// PerformanceMeasure.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2017 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
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(){
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){
ResetStats();
}
}
}
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