// Define the base class to std::allocator.
#include <bits/c++allocator.h>
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-#include <bits/ptr_traits.h>
-#include <bits/uses_allocator.h>
-#include <ext/numeric_traits.h>
-#endif
-
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
* @ingroup memory
*
* Classes encapsulating memory operations.
+ *
+ * @{
*/
template<typename _Tp>
/**
* @brief The @a standard allocator, as per [20.4].
- * @ingroup allocators
*
* See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt04ch11.html
* for further details.
operator!=(const allocator<_Tp>&, const allocator<_Tp>&)
{ return false; }
+ /**
+ * @}
+ */
+
// Inhibit implicit instantiations for required instantiations,
// which are defined via explicit instantiations elsewhere.
#if _GLIBCXX_EXTERN_TEMPLATE
}
};
- template<typename _Alloc, typename _Tp>
- class __alloctr_rebind_helper
- {
- template<typename _Alloc2, typename _Tp2>
- static constexpr bool
- _S_chk(typename _Alloc2::template rebind<_Tp2>::other*)
- { return true; }
-
- template<typename, typename>
- static constexpr bool
- _S_chk(...)
- { return false; }
-
- public:
- static const bool __value = _S_chk<_Alloc, _Tp>(nullptr);
- };
-
- template<typename _Alloc, typename _Tp,
- bool = __alloctr_rebind_helper<_Alloc, _Tp>::__value>
- struct __alloctr_rebind;
-
- template<typename _Alloc, typename _Tp>
- struct __alloctr_rebind<_Alloc, _Tp, true>
- {
- typedef typename _Alloc::template rebind<_Tp>::other __type;
- };
-
- template<template<typename, typename...> class _Alloc, typename _Tp,
- typename _Up, typename... _Args>
- struct __alloctr_rebind<_Alloc<_Up, _Args...>, _Tp, false>
- {
- typedef _Alloc<_Tp, _Args...> __type;
- };
-
- /**
- * @brief Uniform interface to all allocator types.
- * @ingroup allocators
- */
- template<typename _Alloc>
- struct allocator_traits
- {
- /// The allocator type
- typedef _Alloc allocator_type;
- /// The allocated type
- typedef typename _Alloc::value_type value_type;
-
-#define _GLIBCXX_ALLOC_TR_NESTED_TYPE(_NTYPE, _ALT) \
- private: \
- template<typename _Tp> \
- static typename _Tp::_NTYPE _S_##_NTYPE##_helper(_Tp*); \
- static _ALT _S_##_NTYPE##_helper(...); \
- typedef decltype(_S_##_NTYPE##_helper((_Alloc*)0)) __##_NTYPE; \
- public:
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(pointer, value_type*)
-
- /**
- * @brief The allocator's pointer type.
- *
- * @c Alloc::pointer if that type exists, otherwise @c value_type*
- */
- typedef __pointer pointer;
-
-// TODO: Use pointer_traits::rebind alias template.
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(const_pointer,
- typename pointer_traits<pointer>::template __rebind<const value_type>::__type)
-
- /**
- * @brief The allocator's const pointer type.
- *
- * @c Alloc::const_pointer if that type exists, otherwise
- * <tt> pointer_traits<pointer>::rebind<const value_type> </tt>
- */
- typedef __const_pointer const_pointer;
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(void_pointer,
- typename pointer_traits<pointer>::template __rebind<void>::__type)
-
- /**
- * @brief The allocator's void pointer type.
- *
- * @c Alloc::void_pointer if that type exists, otherwise
- * <tt> pointer_traits<pointer>::rebind<void> </tt>
- */
- typedef __void_pointer void_pointer;
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(const_void_pointer,
- typename pointer_traits<pointer>::template __rebind<const void>::__type)
-
- /**
- * @brief The allocator's const void pointer type.
- *
- * @c Alloc::const_void_pointer if that type exists, otherwise
- * <tt> pointer_traits<pointer>::rebind<const void> </tt>
- */
- typedef __const_void_pointer const_void_pointer;
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(difference_type,
- typename pointer_traits<pointer>::difference_type)
-
- /**
- * @brief The allocator's difference type
- *
- * @c Alloc::difference_type if that type exists, otherwise
- * <tt> pointer_traits<pointer>::difference_type </tt>
- */
- typedef __difference_type difference_type;
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(size_type,
- typename make_unsigned<difference_type>::type)
-
- /**
- * @brief The allocator's size type
- *
- * @c Alloc::size_type if that type exists, otherwise
- * <tt> make_unsigned<difference_type>::type </tt>
- */
- typedef __size_type size_type;
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(propagate_on_container_copy_assignment,
- false_type)
-
- /**
- * @brief How the allocator is propagated on copy assignment
- *
- * @c Alloc::propagate_on_container_copy_assignment if that type exists,
- * otherwise @c false_type
- */
- typedef __propagate_on_container_copy_assignment
- propagate_on_container_copy_assignment;
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(propagate_on_container_move_assignment,
- false_type)
-
- /**
- * @brief How the allocator is propagated on move assignment
- *
- * @c Alloc::propagate_on_container_move_assignment if that type exists,
- * otherwise @c false_type
- */
- typedef __propagate_on_container_move_assignment
- propagate_on_container_move_assignment;
-
-_GLIBCXX_ALLOC_TR_NESTED_TYPE(propagate_on_container_swap,
- false_type)
-
- /**
- * @brief How the allocator is propagated on swap
- *
- * @c Alloc::propagate_on_container_swap if that type exists,
- * otherwise @c false_type
- */
- typedef __propagate_on_container_swap propagate_on_container_swap;
-
-#undef _GLIBCXX_ALLOC_TR_NESTED_TYPE
-
- /* TODO: use template alias
- template<typename _Tp>
- using rebind_alloc = __alloctr_rebind<_Alloc, _Tp>::__type;
- template<typename _Tp>
- using rebind_traits = allocator_traits<rebind_alloc<_Tp>>;
- */
- template<typename _Tp>
- struct __rebind_alloc
- {
- typedef typename __alloctr_rebind<_Alloc, _Tp>::__type __type;
- };
-
- template<typename _Tp>
- struct __rebind_traits
- {
- typedef allocator_traits<typename __rebind_alloc<_Tp>::__type> __type;
- };
-
- private:
- template<typename _Alloc2>
- struct __allocate_helper
- {
- template<typename _Alloc3,
- typename = decltype(std::declval<_Alloc3*>()->allocate(
- std::declval<size_type>(),
- std::declval<const_void_pointer>()))>
- static true_type __test(int);
-
- template<typename>
- static false_type __test(...);
-
- typedef decltype(__test<_Alloc>(0)) type;
- static const bool value = type::value;
- };
-
- template<typename _Alloc2>
- static typename
- enable_if<__allocate_helper<_Alloc2>::value, pointer>::type
- _S_allocate(_Alloc2& __a, size_type __n, const_void_pointer __hint)
- { return __a.allocate(__n, __hint); }
-
- template<typename _Alloc2>
- static typename
- enable_if<!__allocate_helper<_Alloc2>::value, pointer>::type
- _S_allocate(_Alloc2& __a, size_type __n, ...)
- { return __a.allocate(__n); }
-
- template<typename _Tp, typename... _Args>
- struct __construct_helper
- {
- template<typename _Alloc2,
- typename = decltype(std::declval<_Alloc2*>()->construct(
- std::declval<_Tp*>(), std::declval<_Args>()...))>
- static true_type __test(int);
-
- template<typename>
- static false_type __test(...);
-
- typedef decltype(__test<_Alloc>(0)) type;
- static const bool value = type::value;
- };
-
- template<typename _Tp, typename... _Args>
- static typename
- enable_if<__construct_helper<_Tp, _Args...>::value, void>::type
- _S_construct(_Alloc& __a, _Tp* __p, _Args&&... __args)
- { __a.construct(__p, std::forward<_Args>(__args)...); }
-
- template<typename _Tp, typename... _Args>
- static typename
- enable_if<!__construct_helper<_Tp, _Args...>::value, void>::type
- _S_construct(_Alloc&, _Tp* __p, _Args&&... __args)
- { ::new((void*)__p) _Tp(std::forward<_Args>(__args)...); }
-
- template<typename _Tp>
- struct __destroy_helper
- {
- template<typename _Alloc2,
- typename = decltype(std::declval<_Alloc2*>()->destroy(
- std::declval<_Tp*>()))>
- static true_type __test(int);
-
- template<typename>
- static false_type __test(...);
-
- typedef decltype(__test<_Alloc>(0)) type;
- static const bool value = type::value;
- };
-
- template<typename _Tp>
- static typename enable_if<__destroy_helper<_Tp>::value, void>::type
- _S_destroy(_Alloc& __a, _Tp* __p)
- { __a.destroy(__p); }
-
- template<typename _Tp>
- static typename enable_if<!__destroy_helper<_Tp>::value, void>::type
- _S_destroy(_Alloc&, _Tp* __p)
- { __p->~_Tp(); }
-
- template<typename _Alloc2>
- struct __maxsize_helper
- {
- template<typename _Alloc3,
- typename = decltype(std::declval<_Alloc3*>()->max_size())>
- static true_type __test(int);
-
- template<typename>
- static false_type __test(...);
-
- typedef decltype(__test<_Alloc2>(0)) type;
- static const bool value = type::value;
- };
-
- template<typename _Alloc2>
- static typename
- enable_if<__maxsize_helper<_Alloc2>::value, size_type>::type
- _S_max_size(_Alloc2& __a)
- { return __a.max_size(); }
-
- template<typename _Alloc2>
- static typename
- enable_if<!__maxsize_helper<_Alloc2>::value, size_type>::type
- _S_max_size(_Alloc2&)
- { return __gnu_cxx::__numeric_traits<size_type>::__max; }
-
- template<typename _Alloc2>
- struct __select_helper
- {
- template<typename _Alloc3, typename
- = decltype(std::declval<_Alloc3*>()
- ->select_on_container_copy_construction())>
- static true_type __test(int);
-
- template<typename>
- static false_type __test(...);
-
- typedef decltype(__test<_Alloc2>(0)) type;
- static const bool value = type::value;
- };
- template<typename _Alloc2>
- static typename
- enable_if<__select_helper<_Alloc2>::value, _Alloc2>::type
- _S_select(_Alloc2& __a)
- { return __a.select_on_container_copy_construction(); }
-
- template<typename _Alloc2>
- static typename
- enable_if<!__select_helper<_Alloc2>::value, _Alloc2>::type
- _S_select(_Alloc2& __a)
- { return __a; }
-
- public:
-
- /**
- * @brief Allocate memory.
- * @param a An allocator.
- * @param n The number of objects to allocate space for.
- *
- * Calls @c a.allocate(n)
- */
- static pointer
- allocate(_Alloc& __a, size_type __n)
- { return __a.allocate(__n); }
-
- /**
- * @brief Allocate memory.
- * @param a An allocator.
- * @param n The number of objects to allocate space for.
- * @param hint Aid to locality.
- * @return Memory of suitable size and alignment for @a n objects
- * of type @c value_type
- *
- * Returns <tt> a.allocate(n, hint) </tt> if that expression is
- * well-formed, otherwise returns @c a.allocate(n)
- */
- static pointer
- allocate(_Alloc& __a, size_type __n, const_void_pointer __hint)
- { return _S_allocate(__a, __n, __hint); }
-
- /**
- * @brief Deallocate memory.
- * @param a An allocator.
- * @param p Pointer to the memory to deallocate.
- * @param n The number of objects space was allocated for.
- *
- * Calls <tt> a.deallocate(p, n) </tt>
- */
- static void deallocate(_Alloc& __a, pointer __p, size_type __n)
- { __a.deallocate(__p, __n); }
-
- /**
- * @brief Construct an object of type @a Tp
- * @param a An allocator.
- * @param p Pointer to memory of suitable size and alignment for Tp
- * @param args Constructor arguments.
- *
- * Calls <tt> a.construct(p, std::forward<Args>(args)...) </tt>
- * if that expression is well-formed, otherwise uses placement-new
- * to construct an object of type @a Tp at location @a p from the
- * arguments @a args...
- */
- template<typename _Tp, typename... _Args>
- static void construct(_Alloc& __a, _Tp* __p, _Args&&... __args)
- { _S_construct(__a, __p, std::forward<_Args>(__args)...); }
-
- /**
- * @brief Destroy an object of type @a Tp
- * @param a An allocator.
- * @param p Pointer to the object to destroy
- *
- * Calls @c a.destroy(p) if that expression is well-formed,
- * otherwise calls @c p->~Tp()
- */
- template <class _Tp>
- static void destroy(_Alloc& __a, _Tp* __p)
- { _S_destroy(__a, __p); }
-
- /**
- * @brief The maximum supported allocation size
- * @param a An allocator.
- * @return @c a.max_size() or @c %numeric_limits<size_type>::max()
- *
- * Returns @c a.max_size() if that expression is well-formed,
- * otherwise returns @c %numeric_limits<size_type>::max()
- */
- static size_type max_size(const _Alloc& __a)
- { return _S_max_size(__a); }
-
- /**
- * @brief Obtain an allocator to use when copying a container.
- * @param rhs An allocator.
- * @return @c rhs.select_on_container_copy_construction() or @a rhs
- *
- * Returns @c rhs.select_on_container_copy_construction() if that
- * expression is well-formed, otherwise returns @a rhs
- */
- static _Alloc
- select_on_container_copy_construction(const _Alloc& __rhs)
- { return _S_select(__rhs); }
- };
-
+ // Declare uses_allocator so it can be specialized in <queue> etc.
+ template<typename, typename>
+ struct uses_allocator;
#endif
_GLIBCXX_END_NAMESPACE_VERSION
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