Re: [boost] [thread] Use of _ReadWriteBarrier

From: Timmo Stange (ts_at_[hidden])
Date: 2007-10-07 14:19:38

John Maddock wrote:

> Secondly, I'm a bit confused why the barrier is *after* the read, shouldn't 
> it be before?  I'm not saying it should be, I just wondered :-)

The acquire semantics enforce that no load or store may be moved from 
behind to in front of the read, or the read be deferred until after a 
subsequent load or store accordingly. That's why the barrier has to be 
placed directly after the read.

Timmo Stange