Hi Guys, What would be the best way to get the size required by the allocation of a shared_ptr used when using allocate_shared ? So far, it looks like to be something related to the sizeof sp_counted_impl_pda< P, D, A >, but I would like to know the cleaner way of getting this info. The goal is to preallocate my pool with the right number of planned shared_ptr in order to avoid allocation.(real time thread) Thanks ! -- Olivier Tristan uvi.net