BloombergLP::bslma::AllocatorUtil_Traits<t_MEMORY_RSRC*, t_TYPE>

Synopsis

Declared in <bslma_allocatorutil.h>

template<
    class t_MEMORY_RSRC,
    class t_TYPE>
struct AllocatorUtil_Traits<t_MEMORY_RSRC*, t_TYPE>
    : bsl::allocator_traits<bsl::conditional<bsl::is_convertible<t_MEMORY_RSRC *, bslma::Allocator *>::value, bsl::allocator<t_TYPE>, bsl::polymorphic_allocator<t_TYPE>>::type>

Description

This specialization is for allocators expressed as a pointer to class derived from bsl::memory_resource. The base class will be bsl::allocator_traits<bsl::allocator<t_TYPE>> if t_MEMORY_RSRC is derived from bsl::Allocator; otherwise the base class will be bsl::allocator_traits<bsl::polymorphic_allocator<t_TYPE>>.

Base Classes

Name	Description
`bsl::allocator_traits<bsl::conditional<bsl::is_convertible<t_MEMORY_RSRC , bslma::Allocator >::value, bsl::allocator<t_TYPE>, bsl::polymorphic_allocator<t_TYPE>>::type>`	Uniform interface to nested types and operations of any allocator.

Type Aliases

Name	Description
`allocator_type`	This `typedef` is an alias to the (template parameter) `ALLOCATOR_TYPE`.
`const_pointer`	This `typedef` is an alias to `AllocatorTraits_ConstPointerType<ALLOCATOR_TYPE>::type`.
`const_void_pointer`	Const void pointer type for the allocator.
`difference_type`	This `typedef` is an alias to `AllocatorTraits_DifferenceType<ALLOCATOR_TYPE>::type`.
`is_always_equal`	`true_type` if two allocators always compare equal; else `false_type`.
`pointer`	This `typedef` is an alias to `AllocatorTraits_PointerType<ALLOCATOR_TYPE>::type`.
`propagate_on_container_copy_assignment`	`true_type` if the allocator propagates on copy assignment.
`propagate_on_container_move_assignment`	`true_type` if the allocator propagates on move assignment.
`propagate_on_container_swap`	`true_type` if the allocator propagates on container swap.
`rebind_alloc`	Rebind this allocator to the specified `ELEMENT_TYPE`.
`rebind_traits`	Rebind this allocator traits type to the specified `ELEMENT_TYPE`.
`size_type`	This `typedef` is an alias to `AllocatorTraits_SizeType<ALLOCATOR_TYPE>::type`.
`value_type`	This `typedef` is an alias to `ALLOCATOR_TYPE::value_type`.
`void_pointer`	This `typedef` is an alias to `AllocatorTraits_VoidPointerType<ALLOCATOR_TYPE>::type`.

Static Member Functions

Name	Description
`allocate`	`allocate` overloads
`construct`	Construct an `ELEMENT_TYPE` object at `elementAddr`.
`deallocate`	Deallocate the storage at `elementAddr` for `n` objects.
`destroy`	Destroy the `ELEMENT_TYPE` object at `elementAddr`.
`max_size`	Return the maximum number of objects `allocate` can return.
`select_on_container_copy_construction`	Return the allocator to use when copy-constructing a container.