On 09/01/2011 09:37 AM, Sasha Levin wrote:
> -#define wmb() __asm__ __volatile__("": : :"memory") > + /* TODO: we may also need rmb()s. It hasn't bitten us yet, but.. */ > + #define wmb() __sync_synchronize()That asm directive also implicitly provided a compiler barrier, I could
^^^^
only
find whether __sync_synchronize() provides one as well. Any idea if it does?
Of course, __sync_synchronize() is a stronger barrier. The asm is simply not a synchronization primitive.
Paolo
