Performance measure

.Net Framework 1.1 doesn’t have cool System.Diagnostic.Stopwatch class to measure performance.

So, i write my own performance measure util for .Net Framework 1.1

 

PerformanceTimer:

 

using System;
using System.ComponentModel;

using System.Runtime.InteropServices;

 

namespace Utils

{

public class PerformanceTimer : IDisposable

{

[DllImport("KERNEL32")]

private static extern bool QueryPerformanceCounter(out long lpPerformanceCount);

 

[DllImport("Kernel32.dll")]

private static extern bool QueryPerformanceFrequency(out long lpFrequency);

 

private string _description;

private long _start;

private long _stop;

private long _frequency;

 

public PerformanceTimer(string descripton)

{

_description = descripton;

Prepare();

if (QueryPerformanceFrequency(out _frequency) == false)

{

// Frequency not supported

throw new Win32Exception();

}

QueryPerformanceCounter(out _start);

}

 

public void Dispose()

{

QueryPerformanceCounter(out _stop);

Console.WriteLine("{0} elapsed {1, 6:###.00} milliseconds", _description, (double)((_stop – _start)* 1000) / (double) _frequency);

}

private static void Prepare()

{

GC.Collect();

GC.WaitForPendingFinalizers();

GC.Collect();

}

}

}

 

Example:

 

public static void Main()

{

using (PerformanceTimer a = new PerformanceTimer("test"))

{

System.Threading.Thread.Sleep(1000);

}

}

Results:

test: elapsed 1000,72 milliseconds

see also