__gnu_cxx::__alloc_traits

__gnu_cxx::__alloc_traits< Library>FunctiognuMcxx::__alloc_traits< _Alloc >(3)



NAME
       __gnu_cxx::__alloc_traits< _Alloc > -

SYNOPSIS
       Inherits std::allocator_traits< _Alloc >.

   Public Types
       typedef std::allocator_traits
           < _Alloc > _Base_type"
       typedef _Alloc allocator_type
       typedef _Base_type::const_pointer const_pointer
       typedef const value_type & const_reference
       typedef __const_void_pointer const_void_pointer
       typedef _Base_type::difference_type difference_type
       typedef _Base_type::pointer pointer
       typedef
           __propagate_on_container_copy_assignment
           propagate_on_container_copy_assignment"
       typedef
           __propagate_on_container_move_assignment
           propagate_on_container_move_assignment"
       typedef
           __propagate_on_container_swap propagate_on_container_swap"
       template<typename _Tp > using rebind_alloc = typename __alloctr_rebind<
           _Alloc, _Tp >::__type
       template<typename _Tp > using rebind_traits = allocator_traits<
           rebind_alloc< _Tp >>
       typedef value_type & reference
       typedef _Base_type::size_type size_type
       typedef _Base_type::value_type value_type
       typedef __void_pointer void_pointer

   Static Public Member Functions
       static constexpr bool _S_always_equal ()
       static constexpr bool _S_nothrow_move ()
       static constexpr bool _S_nothrow_swap ()
       static void _S_on_swap (_Alloc &__a, _Alloc &__b)
       static constexpr bool _S_propagate_on_copy_assign ()
       static constexpr bool _S_propagate_on_move_assign ()
       static constexpr bool _S_propagate_on_swap ()
       static _Alloc _S_select_on_copy (const _Alloc &__a)
       static pointer allocate (_Alloc &__a, size_type __n)
       static pointer allocate (_Alloc &__a, size_type __n, const_void_pointer
           __hint)
       template<typename _Ptr , typename... _Args> static std::enable_if
           < __is_custom_pointer< _Ptr >
           ::value >::type construct (_Alloc &__a, _Ptr __p, _Args
           &&...__args)"
       template<typename _Tp , typename... _Args> static auto construct
           (_Alloc &__a, _Tp *__p, _Args &&...__args) ->
           decltype(_S_construct(__a, __p, std::forward< _Args >(__args)...))
       static void deallocate (_Alloc &__a, pointer __p, size_type __n)
       template<typename _Ptr > static std::enable_if
           < __is_custom_pointer< _Ptr >
           ::value >::type destroy (_Alloc &__a, _Ptr __p)"
       template<class _Tp > static void destroy (_Alloc &__a, _Tp *__p)
       static size_type max_size (const _Alloc &__a)
       static _Alloc select_on_container_copy_construction (const _Alloc
           &__rhs)

Detailed Description
   template<typename _Alloc>struct __gnu_cxx::__alloc_traits< _Alloc >
       Uniform interface to C++98 and C++0x allocators.

       Definition at line 121 of file ext/alloc_traits.h.

Member Typedef Documentation
   template<typename _Alloc> typedef __const_void_pointer
       std::allocator_traits< _Alloc >::const_void_pointer [inherited]
       The allocator's const void pointer type. Alloc::const_void_pointer if
       that type exists, otherwise  pointer_traits<pointer>::rebind<const
       void>

       Definition at line 140 of file bits/alloc_traits.h.

   template<typename _Alloc> typedef __propagate_on_container_copy_assignment
       std::allocator_traits< _Alloc >::propagate_on_container_copy_assignment
       [inherited]
       How the allocator is propagated on copy assignment.
       Alloc::propagate_on_container_copy_assignment if that type exists,
       otherwise false_type

       Definition at line 174 of file bits/alloc_traits.h.

   template<typename _Alloc> typedef __propagate_on_container_move_assignment
       std::allocator_traits< _Alloc >::propagate_on_container_move_assignment
       [inherited]
       How the allocator is propagated on move assignment.
       Alloc::propagate_on_container_move_assignment if that type exists,
       otherwise false_type

       Definition at line 186 of file bits/alloc_traits.h.

   template<typename _Alloc> typedef __propagate_on_container_swap
       std::allocator_traits< _Alloc >::propagate_on_container_swap
       [inherited]
       How the allocator is propagated on swap.
       Alloc::propagate_on_container_swap if that type exists, otherwise
       false_type

       Definition at line 197 of file bits/alloc_traits.h.

   template<typename _Alloc> typedef __void_pointer std::allocator_traits<
       _Alloc >::void_pointer [inherited]
       The allocator's void pointer type. Alloc::void_pointer if that type
       exists, otherwise  pointer_traits<pointer>::rebind<void>

       Definition at line 129 of file bits/alloc_traits.h.

Member Function Documentation
   template<typename _Alloc> static pointer std::allocator_traits< _Alloc
       >::allocate (_Alloc &__a, size_type__n) [inline],  [static],
       [inherited]
       Allocate memory.

       Parameters:
           __a An allocator.
           __n The number of objects to allocate space for.

       Calls a.allocate(n)

       Definition at line 350 of file bits/alloc_traits.h.

   template<typename _Alloc> static pointer std::allocator_traits< _Alloc
       >::allocate (_Alloc &__a, size_type__n, const_void_pointer__hint)
       [inline],  [static],  [inherited]
       Allocate memory.

       Parameters:
           __a An allocator.
           __n The number of objects to allocate space for.
           __hint Aid to locality.

       Returns:
           Memory of suitable size and alignment for n objects of type
           value_type

       Returns  a.allocate(n, hint)  if that expression is well-formed,
       otherwise returns a.allocate(n)

       Definition at line 365 of file bits/alloc_traits.h.

   template<typename _Alloc> template<typename _Tp , typename... _Args> static
       auto std::allocator_traits< _Alloc >::construct (_Alloc &__a, _Tp *__p,
       _Args &&...__args) -> decltype(_S_construct(__a, __p,
       std::forward<_Args>(__args)...))
             [inline],  [static],  [inherited]"


       Construct an object of type _Tp.

       Parameters:
           __a An allocator.
           __p Pointer to memory of suitable size and alignment for Tp
           __args Constructor arguments.

       Calls  __a.construct(__p, std::forward<Args>(__args)...)  if that
       expression is well-formed, otherwise uses placement-new to construct an
       object of type _Tp at location __p from the arguments __args...

       Definition at line 391 of file bits/alloc_traits.h.

   template<typename _Alloc> static void std::allocator_traits< _Alloc
       >::deallocate (_Alloc &__a, pointer__p, size_type__n) [inline],
       [static],  [inherited]
       Deallocate memory.

       Parameters:
           __a An allocator.
           __p Pointer to the memory to deallocate.
           __n The number of objects space was allocated for.

       Calls  a.deallocate(p, n)

       Definition at line 376 of file bits/alloc_traits.h.

   template<typename _Alloc> template<class _Tp > static void
       std::allocator_traits< _Alloc >::destroy (_Alloc &__a, _Tp *__p)
       [inline],  [static],  [inherited]
       Destroy an object of type _Tp.

       Parameters:
           __a An allocator.
           __p Pointer to the object to destroy

       Calls __a.destroy(__p) if that expression is well-formed, otherwise
       calls __p->~_Tp()

       Definition at line 404 of file bits/alloc_traits.h.

   template<typename _Alloc> static size_type std::allocator_traits< _Alloc
       >::max_size (const _Alloc &__a) [inline],  [static],  [inherited]
       The maximum supported allocation size.

       Parameters:
           __a An allocator.

       Returns:
           __a.max_size() or numeric_limits<size_type>::max()

       Returns __a.max_size() if that expression is well-formed, otherwise
       returns numeric_limits<size_type>::max()

       Definition at line 415 of file bits/alloc_traits.h.

       Referenced by std::forward_list< _Tp, _Alloc >::max_size().

   template<typename _Alloc> static _Alloc std::allocator_traits< _Alloc
       >::select_on_container_copy_construction (const _Alloc &__rhs)
       [inline],  [static],  [inherited]
       Obtain an allocator to use when copying a container.

       Parameters:
           __rhs An allocator.

       Returns:
           __rhs.select_on_container_copy_construction() or __rhs

       Returns __rhs.select_on_container_copy_construction() if that
       expression is well-formed, otherwise returns __rhs

       Definition at line 427 of file bits/alloc_traits.h.


Author
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libstdc++                       Wed Apr 24gnu1cxx::__alloc_traits< _Alloc >(3)