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Static Constructor and Performance

, 22 May 2010 CPOL
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.Net Performance Tip - 1
.Net Performance Tip - 1

There are 2 modes by which the CLR emits the JIT code while executing static type constructor

1) Precise mode
2) Before - field - Init Mode

In Precise mode - the code will be Jitted just beofe the first initialization/access call to a static variable

In Before - field - Init Mode - it will be Jitted during the first instance creation of the type

Hence, Before field init mode is much more performant intent than the precise mode,as shown below

 
public class BeforInitMode
{
 static int i = 20;
}
 

In before init Mode - type constructor is jittted much before the static member variable initialization/access

 
public class PreciseMode
{
  static int i;
  static PreciseMode()
  {
   i = 20;
  }
}
 

In this mode - type constructor is jitted just beofre the first type variable initilization/access

Ref: CLR via C# by Jeffrey

I hope this helps!.

Regards,
-Vinayak

License

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

Vinayaka Krishna Shenoy
Architect MindTree Ltd
India India
Motivated achiever who guides organizations in applying technology to business settings, provides added value, and creates project deliverables in a timely manner. An experienced Technical Consultant, have successfully led large project teams of more than 20 people from requirements gathering to implementation and support using C#, .NET ,ADO.NET, ADO.NET Entity Framework,ASP.NET,ASP.NET MVC, WCF and SQL Server.

Comments and Discussions

 
GeneralReason for my vote of 1 useless without numbers Pin
SledgeHammer0122-May-10 9:08
memberSledgeHammer0122-May-10 9:08 

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