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Concurrency Hazards: False Sharing

, 10 Jan 2010 CPOL
False sharing and how to detect and avoid it.
FalseSharing_bin.zip
FalseSharingDemo.exe
ZedGraph.dll
FalseSharing_src.zip
FalseSharing
FalseSharingDemo
Properties
Settings.settings
ZedGraph.dll
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace FalseSharingDemo
{
	static class EnumerableEx
	{
		public static U Median<T, U>( this IEnumerable<T> e, Func<T, U> fn )
		{
			var list = e.Select( fn ).OrderBy( u => u ).ToList();

			if ( list.Count == 0 ) return default( U );

			return list[ list.Count / 2 ];
		}
	}
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Nicholas Butler
United Kingdom United Kingdom

I built my first computer, a Sinclair ZX80, on my 11th birthday in 1980.
In 1992, I completed my Computer Science degree and built my first PC.
I discovered C# and .NET 1.0 Beta 1 in late 2000 and loved them immediately.
I have been writing concurrent software professionally, using multi-processor machines, since 1995.

In real life, I have spent 3 years travelling abroad,
I have held a UK Private Pilots Licence for 20 years,
and I am a PADI Divemaster.

I now live near idyllic Bournemouth in England.

If you would like help with multithreading, please contact me via my website:


I can work 'virtually' anywhere!

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