std::experimental::pmr::resource_adaptor(3)

NAME
std::experimental::pmr::resource_adaptor - std::experimental::pmr::resource_adaptor

Synopsis
   Defined in header <experimental/memory_resource>
   template< class Alloc >
   using resource_adaptor = /*resource-adaptor-imp*/< (library fundamentals
   typename std::allocator_traits<Allocator>:: TS)
   template rebind_alloc<char>>;
   template< class Alloc > (library fundamentals
   class /*resource-adaptor-imp*/ : public memory_resource; // TS)
   for exposition only
   The alias template resource_adaptor adapts the allocator type Alloc with a
   memory_resource interface. The allocator is rebound to a char value type before it
   is actually adapted (using the resource-adaptor-imp class template), so that
   adapting specializations of the same allocator template always yields the same type,
   regardless of the value type the allocator template is originally instantiated with.
   resource-adaptor-imp is a class template whose members are described below. The name
   resource-adaptor-imp is for exposition purposes only and not normative.
   In addition to meeting the Allocator requirements, Allocator must additionally
   satisfy the following requirements:
     * std::allocator_traits<Alloc>::pointer shall be identical to Alloc::value_type*.
     * std::allocator_traits<Alloc>::const_pointer shall be identical to
       Alloc::value_type const*.
     * std::allocator_traits<Alloc>::void_pointer shall be identical to void*.
     * std::allocator_traits<Alloc>::const_const_pointer shall be identical to void
       const*.
   The type memory_resorce in this page denotes std::experimental::pmr::memory_resource
   in LFTS v1 and v2, but denotes std::pmr::memory_resource since LFTS v3.
  Member types of resource-adaptor-imp
   Member type Definition
   allocator_type Alloc
  Member functions of resource-adaptor-imp resource-adaptor-imp::resource-adaptor-imp
   /*resource-adaptor-imp*/() = default; (1) (library
                        fundamentals TS)
   /*resource-adaptor-imp*/(const /*resource-adaptor-imp*/& (library
   other) (2) fundamentals TS)
   = default;
   /*resource-adaptor-imp*/(/*resource-adaptor-imp*/&& other) (3) (library
   = default; fundamentals TS)
   explicit /*resource-adaptor-imp*/(const Alloc& a2); (4) (library
                        fundamentals TS)
   explicit /*resource-adaptor-imp*/(Alloc&& a2); (5) (library
                        fundamentals TS)
   1) Default constructor. Default constructs the wrapped allocator.
   2) Copy constructor. Copy constructs the wrapped allocator from the allocator
   wrapped by other.
   3) Move constructor. Move constructs the wrapped allocator from the allocator
   wrapped by other.
   4) Initializes the wrapped allocator with a2.
   5) Initializes the wrapped allocator with std::move(a2).

Parameters
   other - another resource-adaptor-imp object to copy or move from
   a2 - another Alloc object to copy or move from resource-adaptor-imp::get_allocator
   allocator_type get_allocator() const; (library fundamentals TS)
   Returns a copy of the wrapped allocator. resource-adaptor-imp::operator=
   /*resource-adaptor-imp*/& operator=(const
   /*resource-adaptor-imp*/& other) (library fundamentals TS)
   = default;
   Defaulted copy assignment operator. Copy assigns the wrapped allocator from that of
   other. resource-adaptor-imp::do_allocate
   protected:
   virtual void* do_allocate(std::size_t bytes, std::size_t (library fundamentals TS)
   alignment);
   Allocates memory using the allocate member function of the wrapped allocator. resource-adaptor-imp::do_deallocate
   protected:
   virtual void do_deallocate(void *p, std::size_t bytes, (library fundamentals TS)
   std::size_t alignment);
   Deallocates the storage pointed to by p using the deallocate member function of the
   wrapped allocator.
   p must have been allocated using the allocate member function of an allocator that
   compares equal to the wrapped allocator, and must not have been subsequently
   deallocated. resource-adaptor-imp::do_is_equal
   protected:
   virtual bool do_is_equal(const memory_resource& other) (library fundamentals TS)
   const noexcept;
   Let p be dynamic_cast<const /*resource-adaptor-imp*/*>(&other). If p is a null
   pointer value, returns false. Otherwise, return the result of comparing the
   allocators wrapped by *p and *this using operator==.