std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::allocate (3) - Linux Manuals

std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::allocate: std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::allocate


std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::allocate - std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::allocate


Defined in header <scoped_allocator>
pointer allocate( size_type n ); (since C++11)
                                                                                (until C++20)
[[nodiscard]] pointer allocate( size_type n ); (1) (since C++20)
pointer allocate( size_type n, const_void_pointer hint ); (since C++11)
                                                                            (2) (until C++20)
[[nodiscard]] pointer allocate( size_type n, const_void_pointer hint ); (since C++20)

Uses the outer allocator to allocate uninitialized storage.
1) Calls std::allocator_traits<OuterAlloc>::allocate(outer_allocator(), n)
2) Additionally provides memory locality hint, by calling std::allocator_traits<OuterAlloc>::allocate(outer_allocator(), n, hint)


n - the number of objects to allocate storage for
hint - pointer to a nearby memory location

Return value

The pointer to the allocated storage

See also

         allocates uninitialized storage
allocate (public member function of std::allocator<T>)

allocate allocates uninitialized storage using the allocator
         (public static member function of std::allocator_traits<Alloc>)