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Concurrency Hazards: False Sharing

, 10 Jan 2010
False sharing and how to detect and avoid it.
FalseSharing_bin.zip
FalseSharing_src.zip
FalseSharing
FalseSharingDemo
Properties
Settings.settings
ZedGraph.dll
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

// General Information about an assembly is controlled through the following 
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyTitle( "FalseSharingDemo" )]
[assembly: AssemblyDescription( "" )]
[assembly: AssemblyConfiguration( "" )]
[assembly: AssemblyCompany( "Microsoft" )]
[assembly: AssemblyProduct( "FalseSharingDemo" )]
[assembly: AssemblyCopyright( "Copyright © Microsoft 2009" )]
[assembly: AssemblyTrademark( "" )]
[assembly: AssemblyCulture( "" )]

// Setting ComVisible to false makes the types in this assembly not visible 
// to COM components.  If you need to access a type in this assembly from 
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible( false )]

// The following GUID is for the ID of the typelib if this project is exposed to COM
[assembly: Guid( "ed3d4b5c-3795-4c8c-abfe-edae95f06cc6" )]

// Version information for an assembly consists of the following four values:
//
//      Major Version
//      Minor Version 
//      Build Number
//      Revision
//
// You can specify all the values or you can default the Build and Revision Numbers 
// by using the '*' as shown below:
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion( "1.0.0.0" )]
[assembly: AssemblyFileVersion( "1.0.0.0" )]

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License

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

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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