Merge branch 'master' into CrowIDE

1 files changed, 86 insertions, 0 deletions

diff --git a/src/PerformanceMeasure.cs b/src/PerformanceMeasure.cs
new file mode 100644
index 00000000..8fc0e531
--- /dev/null
+++ b/src/PerformanceMeasure.cs
@@ -0,0 +1,86 @@
+//
+//  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();
+		}
+	}
+}
+