Threading question - ensure execution of a block of code

6 May 2010 5:45 AM

kpg

Is there a way to protect a section of code so that all the statements in
the protected block are executed without being interrupted by another
thread?

I have a worker thread that adds a value to an array (a circular buffer)
then increments the array index. If the user clicks on a button of a form
in the main thread, sometimes the main thread code will then access the
array after the value has been added, but before the array index has been
updated.

I know I've seen ways to protect code in other languages (Pascal or Ada I
think) but how can this be done in vb.net?

thanks,
kpg

6 May 2010 5:55 AM

Cor Ligthert[MVP]

Take a look at Synclock

http://msdn.microsoft.com/en-us/library/3a86s51t(VS.71).aspx

Success

Cor

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"kpg" <n*@way.com> wrote in message
news:OFdye9N7KHA.3184@TK2MSFTNGP05.phx.gbl...
> Is there a way to protect a section of code so that all the statements in
> the protected block are executed without being interrupted by another
> thread?
>
> I have a worker thread that adds a value to an array (a circular buffer)
> then increments the array index. If the user clicks on a button of a form
> in the main thread, sometimes the main thread code will then access the
> array after the value has been added, but before the array index has been
> updated.
>
> I know I've seen ways to protect code in other languages (Pascal or Ada I
> think) but how can this be done in vb.net?
>
> thanks,
> kpg
>
>