105 lines
4.8 KiB
C#
105 lines
4.8 KiB
C#
//
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// System.Diagnostics.CounterSampleCalculator.cs
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//
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// Authors:
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// Jonathan Pryor (jonpryor@vt.edu)
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// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
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//
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// (C) 2002
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// (C) 2003 Andreas Nahr
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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namespace System.Diagnostics {
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public static class CounterSampleCalculator {
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public static float ComputeCounterValue (CounterSample newSample)
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{
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switch (newSample.CounterType) {
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case PerformanceCounterType.RawFraction:
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case PerformanceCounterType.NumberOfItems32:
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case PerformanceCounterType.NumberOfItemsHEX32:
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case PerformanceCounterType.NumberOfItems64:
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case PerformanceCounterType.NumberOfItemsHEX64:
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return (float)newSample.RawValue;
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default:
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return 0;
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}
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}
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[MonoTODO("What's the algorithm?")]
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public static float ComputeCounterValue (CounterSample oldSample,
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CounterSample newSample)
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{
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if (newSample.CounterType != oldSample.CounterType)
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throw new Exception ("The counter samples must be of the same type");
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switch (newSample.CounterType) {
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case PerformanceCounterType.RawFraction:
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case PerformanceCounterType.NumberOfItems32:
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case PerformanceCounterType.NumberOfItemsHEX32:
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case PerformanceCounterType.NumberOfItems64:
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case PerformanceCounterType.NumberOfItemsHEX64:
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return (float)newSample.RawValue;
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case PerformanceCounterType.AverageCount64:
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return (float)(newSample.RawValue - oldSample.RawValue)/(float)(newSample.BaseValue - oldSample.BaseValue);
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case PerformanceCounterType.AverageTimer32:
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return (((float)(newSample.RawValue - oldSample.RawValue))/newSample.SystemFrequency)/(float)(newSample.BaseValue - oldSample.BaseValue);
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case PerformanceCounterType.CounterDelta32:
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case PerformanceCounterType.CounterDelta64:
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return (float)(newSample.RawValue - oldSample.RawValue);
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case PerformanceCounterType.CounterMultiTimer:
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return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp) * 100.0f/newSample.BaseValue;
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case PerformanceCounterType.CounterMultiTimer100Ns:
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return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp100nSec - oldSample.TimeStamp100nSec) * 100.0f/newSample.BaseValue;
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case PerformanceCounterType.CounterMultiTimerInverse:
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return (newSample.BaseValue - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp)) * 100.0f;
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case PerformanceCounterType.CounterMultiTimer100NsInverse:
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return (newSample.BaseValue - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp100nSec - oldSample.TimeStamp100nSec)) * 100.0f;
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case PerformanceCounterType.CounterTimer:
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case PerformanceCounterType.CountPerTimeInterval32:
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case PerformanceCounterType.CountPerTimeInterval64:
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return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp);
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case PerformanceCounterType.CounterTimerInverse:
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return (1.0f - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp100nSec - oldSample.TimeStamp100nSec)) * 100.0f;
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case PerformanceCounterType.ElapsedTime:
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// FIXME
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return 0;
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case PerformanceCounterType.Timer100Ns:
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return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp) * 100.0f;
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case PerformanceCounterType.Timer100NsInverse:
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return (1f - ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp)) * 100.0f;
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case PerformanceCounterType.RateOfCountsPerSecond32:
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case PerformanceCounterType.RateOfCountsPerSecond64:
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return ((float)(newSample.RawValue - oldSample.RawValue))/(float)(newSample.TimeStamp - oldSample.TimeStamp) * 10000000;
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default:
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Console.WriteLine ("Counter type {0} not handled", newSample.CounterType);
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return 0;
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}
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}
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}
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}
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