On Wed, Aug 27, 2008 at 02:45:25PM +0100, Dave Korn wrote: > Jay wrote on 27 August 2008 09:55: > > > Yeah that's probably ok. > > Volatile is enough to force the ordering? > > Absolutely; it's a defined part of the standard that all volatile > side-effects must complete in-order. GCC will not move code past a volatile > operation.
It's still not sufficient without a memory barrier. -- Daniel Jacobowitz CodeSourcery
