Subj : Re: What does Memory Barriers mean ??
To   : comp.programming.threads
From : Marcin 'Qrczak' Kowalczyk
Date : Tue Jan 11 2005 10:11 am

"SenderX" <xxx@xxx.com> writes:

> static int global = 0;
>
> 1. int *local = &global;
> 2. pthread_mutex_lock( ... );
> 3. *local = 5;
> 4. pthread_mutex_unlock( ... );
>
> Since local has never had its address taken, could step 3 possibly
> be moved out of the critical section?

No, because it's not local which is written but *local.

-- 
   __("<         Marcin Kowalczyk
   \__/       qrczak@knm.org.pl
    ^^     http://qrnik.knm.org.pl/~qrczak/

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