Hi Ion (and everyone else), I'm a newbye and I have only one simple (stupid?) question: how can I construct a shared_ptr in a non-throwing mode? This example throw if there is enough space for MyType but isn't enough for my_shared_ptr: typedef managed_shared_ptr<MyType,managed_shared_memory>::type my_shared_ptr; my_shared_ptr sh_ptr = make_managed_shared_ptr(     segment.construct<MyType>("object to share", std::nothrow)(), segment); Thanks Pietro Versari