Static Data over multiple threads

[RichardF]

Hi,

my app has 2 threads both which access the same static data (in a struct). I am aware that either thread could change one of these variables which obviously is a problem.

does anyone have an opinion on this method - or can see furthur problems ?

thanks in advance
Rich

 

[Cagliostro]

Yes, is nor problem. Only problem is in synchronization.

Ion Filipski

ICQ: 95034075
AIM: IonFilipski
filipski@excite.com

 

[palbano]

Ion is correct of course

Wrap all writing to variables in a CRITICAL_SECTION. See the MSDN SDK for details of how to do that, start at the InitializeCriticalSection() API.

-pete

 

[RichardF]

Thanks,

Just out of interest - is there a difference between using mutex objects and using critial sections ?

Rich.

 

[Cagliostro]

Yes,
mutex will sinchronize any instances of programs(processes) but critical section only threads inside a single instance a program(process)

Ion Filipski

ICQ: 95034075
AIM: IonFilipski
filipski@excite.com