🚀 go-pugleaf

I am confused by the two critical sections.  What am I missing?

I understand the idea is to block reading of a value that has been only
partially altered.  Would it not work if a critical section were only
established for that code which modifies the variable?

.  Ed

> Vladimir Afanasyev wrote in message
> news:41ee3727$1@newsgroups.borland.com...
>
> >There's a integer variable visible to 2 threads. One of the
> >threads reads/modifies this var, but other thread only
> >reads it. But an exact value of the var is not important
> >for the 2nd thread.
> >The thread checks it for zero or not, i.e. "if (my_var)...".
> >Is it not matter that I'm not using any synchronization
> >methods?
>
> If both threads from a single process you can use
> critical section objects for accessing to your variable.
> But in this case all access to variable must be in single
> critical section.
>
> EnterCriticalSection
> switch(threadNum)
>    {
>      case 1: {.... read variable.... } break;
>      case 2: {.... read/modify variable ...} break;
>    }
> LeaveCriticalSection