Re: C++11 atomic library notes

[Andrew MacLeod <amacleod at redhat dot com>]

On 10/03/2011 01:31 PM, Richard Henderson wrote:
> On 09/30/2011 01:36 PM, Andrew MacLeod wrote:
> > http://gcc.gnu.org/wiki/Atomic/GCCMM/LIbrary
>
> >    __atomic_store (size_t obj_size, T *mem, T val, enum memory_model model)
> I don't like this.  I really cannot imagine any situation for which the
> compiler can't resolve SIZE to a compile-time constant.  I think it's
> pointless to have a dispatch routine that just calls all of
its a library call for arbitrary sized objects...  C++ can have any 
class declared atomic, so it doesn't have to map to one of those 
optimized lock-free routines.


Andrew