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//
// System.Diagnostics.CounterSampleCalculator.cs
//
// Authors:
// Jonathan Pryor (jonpryor@vt.edu)
// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
//
// (C) 2002
// (C) 2003 Andreas Nahr
//
//
// 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;
namespace System.Diagnostics {
public static class CounterSampleCalculator {
public static float ComputeCounterValue (CounterSample newSample)
{
switch (newSample.CounterType) {
case PerformanceCounterType.RawFraction:
case PerformanceCounterType.NumberOfItems32:
case PerformanceCounterType.NumberOfItemsHEX32:
case PerformanceCounterType.NumberOfItems64:
case PerformanceCounterType.NumberOfItemsHEX64:
return (float)newSample.RawValue;
default:
return 0;
}
}
[MonoTODO("What's the algorithm?")]
public static float ComputeCounterValue (CounterSample oldSample,
CounterSample newSample)
{
if (newSample.CounterType != oldSample.CounterType)
throw new Exception ("The counter samples must be of the same type");
switch (newSample.CounterType) {
case PerformanceCounterType.RawFraction:
case PerformanceCounterType.NumberOfItems32:
case PerformanceCounterType.NumberOfItemsHEX32:
case PerformanceCounterType.NumberOfItems64:
case PerformanceCounterType.NumberOfItemsHEX64:
return (float)newSample.RawValue;
case PerformanceCounterType.AverageCount64:
return (float)(newSample.RawValue - oldSample.RawValue)/(float)(newSample.BaseValue - oldSample.BaseValue);
case PerformanceCounterType.AverageTimer32:
return (((float)(newSample.RawValue - oldSample.RawValue))/newSample.SystemFrequency)/(float)(newSample.BaseValue - oldSample.BaseValue);
case PerformanceCounterType.CounterDelta32:
case PerformanceCounterType.CounterDelta64:
return (float)(newSample.RawValue - oldSample.RawValue);
case PerformanceCounterType.CounterMultiTimer:
return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp) * 100.0f/newSample.BaseValue;
case PerformanceCounterType.CounterMultiTimer100Ns:
return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp100nSec - oldSample.TimeStamp100nSec) * 100.0f/newSample.BaseValue;
case PerformanceCounterType.CounterMultiTimerInverse:
return (newSample.BaseValue - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp)) * 100.0f;
case PerformanceCounterType.CounterMultiTimer100NsInverse:
return (newSample.BaseValue - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp100nSec - oldSample.TimeStamp100nSec)) * 100.0f;
case PerformanceCounterType.CounterTimer:
case PerformanceCounterType.CountPerTimeInterval32:
case PerformanceCounterType.CountPerTimeInterval64:
return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp);
case PerformanceCounterType.CounterTimerInverse:
return (1.0f - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp100nSec - oldSample.TimeStamp100nSec)) * 100.0f;
case PerformanceCounterType.ElapsedTime:
// FIXME
return 0;
case PerformanceCounterType.Timer100Ns:
return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp) * 100.0f;
case PerformanceCounterType.Timer100NsInverse:
return (1f - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp)) * 100.0f;
case PerformanceCounterType.RateOfCountsPerSecond32:
case PerformanceCounterType.RateOfCountsPerSecond64:
return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp) * 10000000;
default:
Console.WriteLine ("Counter type {0} not handled", newSample.CounterType);
return 0;
}
}
}
}
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