E. Gladyshev wrote: > --- Gregory Colvin <[EMAIL PROTECTED]> wrote: >> For shared_ptr the count is allocated by the following line in the >> shared_count >> constructor: >> >> new sp_counted_base_impl<P, D>(p, d); >> >> So it might be possible to make the allocation customizable by >> specializing >> sp_counted_base_impl. > > I think it would be great. > > However there is another problem. > You have to new your object. > shared_ptr<MyClass> s( new MyClass );
You can allocate your object however you want: shared_ptr<MyClass> s(MyClass::allocate(), MyClass::deallocate); and of course there is also the textbook way of defining a suitable MyClass::operator new. > You cannot use allocator like you would expect: > shared_ptr< MyClass, std::allocator<MyClass> > s; Leaving aside the issue of whether specializing std::allocator<MyClass> is a good idea: shared_ptr< MyClass, MyAllocator > s; note that you now wouldn't be able to pass s to a function that expects shared_ptr<MyClass> since the type is not the same. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
