Passing references of ThreadStatic variables

[Hemanth]

Hi,

I am using .NET 2.0.

Suppose I mark a static variable with the ThreadStatic attribute in a class.
From some method in the class, if I pass that variable to an object of
another class as an argument in a method, would it be maintained as a
reference in the other object ? Subsequently, if the second object spawns a
thread which also accesses this variable, would the two threads be working on
the same instance of the variable ? Or does the second thread get a copy of
the thread static variable ?

[Hemanth]

Thank you. That answers my question.

"Vadym Stetsyak" wrote:

Hello, Hemanth!

If you pass that veriable as method parameter then second object will use the value of static var initialized in the first object.

Also if second object will spawn new thread and access the variable directly SomeType.var then it will have another instance. OTOH if you store the reference passed as method parameter, then both thread will share the same variable.

Here is the sample

public class SomeType
{
[ThreadStatic]
public static SomeAnotherType var;

}

public class SomeType2
{
SomeAnotherType ineternalVar;;
void Method(SomeAnotherType var)
{
internalVar = var;

Thread thread = new Thread(new ParametrizedThreadStart(ThreadMethod));
}

void ThreadMethod(object obj)
{
//this.internalVar here will be the same for both threads
//however
bool isEqual = this.internalVar == SomeType.var; //will return false as we access static variable directly...

}
}

--
Regards, Vadym Stetsyak
www: http://vadmyst.blogspot