Subj : Re: Memory Barriers, Compiler Optimizations, etc.
To   : comp.programming.threads
From : SenderX
Date : Mon Feb 07 2005 11:41 am

> > Here are some questions that need clarification in your documentation:
> >
> > 1. Can external data depend on the return value from a failed CAS?
>
> I don't undestand what your asking.

static CMyData my_data;
static volatile LONG flag = 0;


my_data.setup();
InterlockedCompareExchange( &flag, 1, 0 );


AnotherConcurrentThread
------------------

while ( ! InterlockedCompareExchange( &flag, 0, 0 ) ) { Sleep( 0 ); _asm
pause; }
// flag is set
my_data.use();



Is this safe?

.