Re: [Boost-users] [Interprocess] shared_ptr in a non-throwing mode

El 06/04/2011 13:19, Pietro Versari escribió:

Hi Ion (and everyone else),

I'm a newbye and I have only one simple 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::type my_shared_ptr; my_shared_ptr sh_ptr = make_managed_shared_ptr( segment.construct<MyType>("object to share", std::nothrow)(), segment);

Reviewing again the code, it is not a bug. make_managed_shared_ptr creates a shared ptr from the object but it must allocate new memory for the reference count. So it can throw. What is missing is a new make_managed_shared_ptr() that also is nothrow. I will add it for Boost 1.47: my_shared_ptr sh_ptr = make_managed_shared_ptr ( segment.construct<MyType>("object to share", std::nothrow)() , segment , std::nothrow); Best, Ion