| // -*- C++ -*- |
| //===-------------------------- scoped_allocator --------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP_SCOPED_ALLOCATOR |
| #define _LIBCPP_SCOPED_ALLOCATOR |
| |
| /* |
| scoped_allocator synopsis |
| |
| namespace std |
| { |
| |
| template <class OuterAlloc, class... InnerAllocs> |
| class scoped_allocator_adaptor : public OuterAlloc |
| { |
| typedef allocator_traits<OuterAlloc> OuterTraits; // exposition only |
| scoped_allocator_adaptor<InnerAllocs...> inner; // exposition only |
| public: |
| |
| typedef OuterAlloc outer_allocator_type; |
| typedef see below inner_allocator_type; |
| |
| typedef typename OuterTraits::value_type value_type; |
| typedef typename OuterTraits::size_type size_type; |
| typedef typename OuterTraits::difference_type difference_type; |
| typedef typename OuterTraits::pointer pointer; |
| typedef typename OuterTraits::const_pointer const_pointer; |
| typedef typename OuterTraits::void_pointer void_pointer; |
| typedef typename OuterTraits::const_void_pointer const_void_pointer; |
| |
| typedef see below propagate_on_container_copy_assignment; |
| typedef see below propagate_on_container_move_assignment; |
| typedef see below propagate_on_container_swap; |
| |
| template <class Tp> |
| struct rebind |
| { |
| typedef scoped_allocator_adaptor< |
| OuterTraits::template rebind_alloc<Tp>, InnerAllocs...> other; |
| }; |
| |
| scoped_allocator_adaptor(); |
| template <class OuterA2> |
| scoped_allocator_adaptor(OuterA2&& outerAlloc, |
| const InnerAllocs&... innerAllocs) noexcept; |
| scoped_allocator_adaptor(const scoped_allocator_adaptor& other) noexcept; |
| scoped_allocator_adaptor(scoped_allocator_adaptor&& other) noexcept; |
| template <class OuterA2> |
| scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& other) noexcept; |
| template <class OuterA2> |
| scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2, InnerAllocs...>&& other) noexcept; |
| |
| ~scoped_allocator_adaptor(); |
| |
| inner_allocator_type& inner_allocator() noexcept; |
| const inner_allocator_type& inner_allocator() const noexcept; |
| |
| outer_allocator_type& outer_allocator() noexcept; |
| const outer_allocator_type& outer_allocator() const noexcept; |
| |
| pointer allocate(size_type n); |
| pointer allocate(size_type n, const_void_pointer hint); |
| void deallocate(pointer p, size_type n) noexcept; |
| |
| size_type max_size() const; |
| template <class T, class... Args> void construct(T* p, Args&& args); |
| template <class T1, class T2, class... Args1, class... Args2> |
| void construct(pair<T1, T2>* p, piecewise_construct t, tuple<Args1...> x, |
| tuple<Args2...> y); |
| template <class T1, class T2> |
| void construct(pair<T1, T2>* p); |
| template <class T1, class T2, class U, class V> |
| void construct(pair<T1, T2>* p, U&& x, V&& y); |
| template <class T1, class T2, class U, class V> |
| void construct(pair<T1, T2>* p, const pair<U, V>& x); |
| template <class T1, class T2, class U, class V> |
| void construct(pair<T1, T2>* p, pair<U, V>&& x); |
| template <class T> void destroy(T* p); |
| |
| template <class T> void destroy(T* p) noexcept; |
| |
| scoped_allocator_adaptor select_on_container_copy_construction() const noexcept; |
| }; |
| |
| template <class OuterA1, class OuterA2, class... InnerAllocs> |
| bool |
| operator==(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a, |
| const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b) noexcept; |
| |
| template <class OuterA1, class OuterA2, class... InnerAllocs> |
| bool |
| operator!=(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a, |
| const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b) noexcept; |
| |
| } // std |
| |
| */ |
| |
| #include <__config> |
| #include <memory> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| #pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_ADVANCED_SFINAE) |
| |
| // scoped_allocator_adaptor |
| |
| template <class ..._Allocs> |
| class scoped_allocator_adaptor; |
| |
| template <class ..._Allocs> struct __get_poc_copy_assignment; |
| |
| template <class _A0> |
| struct __get_poc_copy_assignment<_A0> |
| { |
| static const bool value = allocator_traits<_A0>:: |
| propagate_on_container_copy_assignment::value; |
| }; |
| |
| template <class _A0, class ..._Allocs> |
| struct __get_poc_copy_assignment<_A0, _Allocs...> |
| { |
| static const bool value = |
| allocator_traits<_A0>::propagate_on_container_copy_assignment::value || |
| __get_poc_copy_assignment<_Allocs...>::value; |
| }; |
| |
| template <class ..._Allocs> struct __get_poc_move_assignment; |
| |
| template <class _A0> |
| struct __get_poc_move_assignment<_A0> |
| { |
| static const bool value = allocator_traits<_A0>:: |
| propagate_on_container_move_assignment::value; |
| }; |
| |
| template <class _A0, class ..._Allocs> |
| struct __get_poc_move_assignment<_A0, _Allocs...> |
| { |
| static const bool value = |
| allocator_traits<_A0>::propagate_on_container_move_assignment::value || |
| __get_poc_move_assignment<_Allocs...>::value; |
| }; |
| |
| template <class ..._Allocs> struct __get_poc_swap; |
| |
| template <class _A0> |
| struct __get_poc_swap<_A0> |
| { |
| static const bool value = allocator_traits<_A0>:: |
| propagate_on_container_swap::value; |
| }; |
| |
| template <class _A0, class ..._Allocs> |
| struct __get_poc_swap<_A0, _Allocs...> |
| { |
| static const bool value = |
| allocator_traits<_A0>::propagate_on_container_swap::value || |
| __get_poc_swap<_Allocs...>::value; |
| }; |
| |
| template <class ..._Allocs> |
| class __scoped_allocator_storage; |
| |
| template <class _OuterAlloc, class... _InnerAllocs> |
| class __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...> |
| : public _OuterAlloc |
| { |
| typedef _OuterAlloc outer_allocator_type; |
| protected: |
| typedef scoped_allocator_adaptor<_InnerAllocs...> inner_allocator_type; |
| |
| private: |
| inner_allocator_type __inner_; |
| |
| protected: |
| |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage() _NOEXCEPT {} |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage(_OuterA2&& __outerAlloc, |
| const _InnerAllocs& ...__innerAllocs) _NOEXCEPT |
| : outer_allocator_type(_VSTD::forward<_OuterA2>(__outerAlloc)), |
| __inner_(__innerAllocs...) {} |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, const _OuterA2&>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage( |
| const __scoped_allocator_storage<_OuterA2, _InnerAllocs...>& __other) _NOEXCEPT |
| : outer_allocator_type(__other.outer_allocator()), |
| __inner_(__other.inner_allocator()) {} |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage( |
| __scoped_allocator_storage<_OuterA2, _InnerAllocs...>&& __other) _NOEXCEPT |
| : outer_allocator_type(_VSTD::move(__other.outer_allocator())), |
| __inner_(_VSTD::move(__other.inner_allocator())) {} |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage(_OuterA2&& __o, |
| const inner_allocator_type& __i) _NOEXCEPT |
| : outer_allocator_type(_VSTD::forward<_OuterA2>(__o)), |
| __inner_(__i) |
| { |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| inner_allocator_type& inner_allocator() _NOEXCEPT {return __inner_;} |
| _LIBCPP_INLINE_VISIBILITY |
| const inner_allocator_type& inner_allocator() const _NOEXCEPT {return __inner_;} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| outer_allocator_type& outer_allocator() _NOEXCEPT |
| {return static_cast<outer_allocator_type&>(*this);} |
| _LIBCPP_INLINE_VISIBILITY |
| const outer_allocator_type& outer_allocator() const _NOEXCEPT |
| {return static_cast<const outer_allocator_type&>(*this);} |
| |
| scoped_allocator_adaptor<outer_allocator_type, _InnerAllocs...> |
| _LIBCPP_INLINE_VISIBILITY |
| select_on_container_copy_construction() const _NOEXCEPT |
| { |
| return scoped_allocator_adaptor<outer_allocator_type, _InnerAllocs...> |
| ( |
| allocator_traits<outer_allocator_type>:: |
| select_on_container_copy_construction(outer_allocator()), |
| allocator_traits<inner_allocator_type>:: |
| select_on_container_copy_construction(inner_allocator()) |
| ); |
| } |
| |
| template <class...> friend class __scoped_allocator_storage; |
| }; |
| |
| template <class _OuterAlloc> |
| class __scoped_allocator_storage<_OuterAlloc> |
| : public _OuterAlloc |
| { |
| typedef _OuterAlloc outer_allocator_type; |
| protected: |
| typedef scoped_allocator_adaptor<_OuterAlloc> inner_allocator_type; |
| |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage() _NOEXCEPT {} |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage(_OuterA2&& __outerAlloc) _NOEXCEPT |
| : outer_allocator_type(_VSTD::forward<_OuterA2>(__outerAlloc)) {} |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, const _OuterA2&>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage( |
| const __scoped_allocator_storage<_OuterA2>& __other) _NOEXCEPT |
| : outer_allocator_type(__other.outer_allocator()) {} |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| __scoped_allocator_storage( |
| __scoped_allocator_storage<_OuterA2>&& __other) _NOEXCEPT |
| : outer_allocator_type(_VSTD::move(__other.outer_allocator())) {} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| inner_allocator_type& inner_allocator() _NOEXCEPT |
| {return static_cast<inner_allocator_type&>(*this);} |
| _LIBCPP_INLINE_VISIBILITY |
| const inner_allocator_type& inner_allocator() const _NOEXCEPT |
| {return static_cast<const inner_allocator_type&>(*this);} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| outer_allocator_type& outer_allocator() _NOEXCEPT |
| {return static_cast<outer_allocator_type&>(*this);} |
| _LIBCPP_INLINE_VISIBILITY |
| const outer_allocator_type& outer_allocator() const _NOEXCEPT |
| {return static_cast<const outer_allocator_type&>(*this);} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| scoped_allocator_adaptor<outer_allocator_type> |
| select_on_container_copy_construction() const _NOEXCEPT |
| {return scoped_allocator_adaptor<outer_allocator_type>( |
| allocator_traits<outer_allocator_type>:: |
| select_on_container_copy_construction(outer_allocator()) |
| );} |
| |
| __scoped_allocator_storage(const outer_allocator_type& __o, |
| const inner_allocator_type& __i) _NOEXCEPT; |
| |
| template <class...> friend class __scoped_allocator_storage; |
| }; |
| |
| // __outermost |
| |
| template <class _Alloc> |
| decltype(declval<_Alloc>().outer_allocator(), true_type()) |
| __has_outer_allocator_test(_Alloc&& __a); |
| |
| template <class _Alloc> |
| false_type |
| __has_outer_allocator_test(const volatile _Alloc& __a); |
| |
| template <class _Alloc> |
| struct __has_outer_allocator |
| : public common_type |
| < |
| decltype(__has_outer_allocator_test(declval<_Alloc&>())) |
| >::type |
| { |
| }; |
| |
| template <class _Alloc, bool = __has_outer_allocator<_Alloc>::value> |
| struct __outermost |
| { |
| typedef _Alloc type; |
| _LIBCPP_INLINE_VISIBILITY |
| type& operator()(type& __a) const _NOEXCEPT {return __a;} |
| }; |
| |
| template <class _Alloc> |
| struct __outermost<_Alloc, true> |
| { |
| typedef typename remove_reference |
| < |
| decltype(_VSTD::declval<_Alloc>().outer_allocator()) |
| >::type _OuterAlloc; |
| typedef typename __outermost<_OuterAlloc>::type type; |
| _LIBCPP_INLINE_VISIBILITY |
| type& operator()(_Alloc& __a) const _NOEXCEPT |
| {return __outermost<_OuterAlloc>()(__a.outer_allocator());} |
| }; |
| |
| template <class _OuterAlloc, class... _InnerAllocs> |
| class _LIBCPP_TYPE_VIS_ONLY scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs...> |
| : public __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...> |
| { |
| typedef __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...> base; |
| typedef allocator_traits<_OuterAlloc> _OuterTraits; |
| public: |
| typedef _OuterAlloc outer_allocator_type; |
| typedef typename base::inner_allocator_type inner_allocator_type; |
| typedef typename _OuterTraits::size_type size_type; |
| typedef typename _OuterTraits::difference_type difference_type; |
| typedef typename _OuterTraits::pointer pointer; |
| typedef typename _OuterTraits::const_pointer const_pointer; |
| typedef typename _OuterTraits::void_pointer void_pointer; |
| typedef typename _OuterTraits::const_void_pointer const_void_pointer; |
| |
| typedef integral_constant |
| < |
| bool, |
| __get_poc_copy_assignment<outer_allocator_type, |
| _InnerAllocs...>::value |
| > propagate_on_container_copy_assignment; |
| typedef integral_constant |
| < |
| bool, |
| __get_poc_move_assignment<outer_allocator_type, |
| _InnerAllocs...>::value |
| > propagate_on_container_move_assignment; |
| typedef integral_constant |
| < |
| bool, |
| __get_poc_swap<outer_allocator_type, _InnerAllocs...>::value |
| > propagate_on_container_swap; |
| |
| template <class _Tp> |
| struct rebind |
| { |
| typedef scoped_allocator_adaptor |
| < |
| typename _OuterTraits::template rebind_alloc<_Tp>, _InnerAllocs... |
| > other; |
| }; |
| |
| _LIBCPP_INLINE_VISIBILITY |
| scoped_allocator_adaptor() _NOEXCEPT {} |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| scoped_allocator_adaptor(_OuterA2&& __outerAlloc, |
| const _InnerAllocs& ...__innerAllocs) _NOEXCEPT |
| : base(_VSTD::forward<_OuterA2>(__outerAlloc), __innerAllocs...) {} |
| // scoped_allocator_adaptor(const scoped_allocator_adaptor& __other) = default; |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, const _OuterA2&>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| scoped_allocator_adaptor( |
| const scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>& __other) _NOEXCEPT |
| : base(__other) {} |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| scoped_allocator_adaptor( |
| scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>&& __other) _NOEXCEPT |
| : base(_VSTD::move(__other)) {} |
| |
| // ~scoped_allocator_adaptor() = default; |
| |
| _LIBCPP_INLINE_VISIBILITY |
| inner_allocator_type& inner_allocator() _NOEXCEPT |
| {return base::inner_allocator();} |
| _LIBCPP_INLINE_VISIBILITY |
| const inner_allocator_type& inner_allocator() const _NOEXCEPT |
| {return base::inner_allocator();} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| outer_allocator_type& outer_allocator() _NOEXCEPT |
| {return base::outer_allocator();} |
| _LIBCPP_INLINE_VISIBILITY |
| const outer_allocator_type& outer_allocator() const _NOEXCEPT |
| {return base::outer_allocator();} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| pointer allocate(size_type __n) |
| {return allocator_traits<outer_allocator_type>:: |
| allocate(outer_allocator(), __n);} |
| _LIBCPP_INLINE_VISIBILITY |
| pointer allocate(size_type __n, const_void_pointer __hint) |
| {return allocator_traits<outer_allocator_type>:: |
| allocate(outer_allocator(), __n, __hint);} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| void deallocate(pointer __p, size_type __n) _NOEXCEPT |
| {allocator_traits<outer_allocator_type>:: |
| deallocate(outer_allocator(), __p, __n);} |
| |
| _LIBCPP_INLINE_VISIBILITY |
| size_type max_size() const |
| {return allocator_traits<outer_allocator_type>::max_size(outer_allocator());} |
| |
| template <class _Tp, class... _Args> |
| _LIBCPP_INLINE_VISIBILITY |
| void construct(_Tp* __p, _Args&& ...__args) |
| {__construct(__uses_alloc_ctor<_Tp, inner_allocator_type, _Args...>(), |
| __p, _VSTD::forward<_Args>(__args)...);} |
| template <class _Tp> |
| _LIBCPP_INLINE_VISIBILITY |
| void destroy(_Tp* __p) |
| { |
| typedef __outermost<outer_allocator_type> _OM; |
| allocator_traits<typename _OM::type>:: |
| destroy(_OM()(outer_allocator()), __p); |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| scoped_allocator_adaptor select_on_container_copy_construction() const _NOEXCEPT |
| {return base::select_on_container_copy_construction();} |
| |
| private: |
| |
| template <class _OuterA2, |
| class = typename enable_if< |
| is_constructible<outer_allocator_type, _OuterA2>::value |
| >::type> |
| _LIBCPP_INLINE_VISIBILITY |
| scoped_allocator_adaptor(_OuterA2&& __o, |
| const inner_allocator_type& __i) _NOEXCEPT |
| : base(_VSTD::forward<_OuterA2>(__o), __i) {} |
| |
| template <class _Tp, class... _Args> |
| _LIBCPP_INLINE_VISIBILITY |
| void __construct(integral_constant<int, 0>, _Tp* __p, _Args&& ...__args) |
| { |
| typedef __outermost<outer_allocator_type> _OM; |
| allocator_traits<typename _OM::type>::construct |
| ( |
| _OM()(outer_allocator()), |
| __p, |
| _VSTD::forward<_Args>(__args)... |
| ); |
| } |
| |
| template <class _Tp, class... _Args> |
| _LIBCPP_INLINE_VISIBILITY |
| void __construct(integral_constant<int, 1>, _Tp* __p, _Args&& ...__args) |
| { |
| typedef __outermost<outer_allocator_type> _OM; |
| allocator_traits<typename _OM::type>::construct |
| ( |
| _OM()(outer_allocator()), |
| __p, |
| allocator_arg, |
| inner_allocator(), |
| _VSTD::forward<_Args>(__args)... |
| ); |
| } |
| |
| template <class _Tp, class... _Args> |
| _LIBCPP_INLINE_VISIBILITY |
| void __construct(integral_constant<int, 2>, _Tp* __p, _Args&& ...__args) |
| { |
| typedef __outermost<outer_allocator_type> _OM; |
| allocator_traits<typename _OM::type>::construct |
| ( |
| _OM()(outer_allocator()), |
| __p, |
| _VSTD::forward<_Args>(__args)..., |
| inner_allocator() |
| ); |
| } |
| |
| template <class...> friend class __scoped_allocator_storage; |
| }; |
| |
| template <class _OuterA1, class _OuterA2> |
| inline _LIBCPP_INLINE_VISIBILITY |
| bool |
| operator==(const scoped_allocator_adaptor<_OuterA1>& __a, |
| const scoped_allocator_adaptor<_OuterA2>& __b) _NOEXCEPT |
| { |
| return __a.outer_allocator() == __b.outer_allocator(); |
| } |
| |
| template <class _OuterA1, class _OuterA2, class _InnerA0, class... _InnerAllocs> |
| inline _LIBCPP_INLINE_VISIBILITY |
| bool |
| operator==(const scoped_allocator_adaptor<_OuterA1, _InnerA0, _InnerAllocs...>& __a, |
| const scoped_allocator_adaptor<_OuterA2, _InnerA0, _InnerAllocs...>& __b) _NOEXCEPT |
| { |
| return __a.outer_allocator() == __b.outer_allocator() && |
| __a.inner_allocator() == __b.inner_allocator(); |
| } |
| |
| template <class _OuterA1, class _OuterA2, class... _InnerAllocs> |
| inline _LIBCPP_INLINE_VISIBILITY |
| bool |
| operator!=(const scoped_allocator_adaptor<_OuterA1, _InnerAllocs...>& __a, |
| const scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>& __b) _NOEXCEPT |
| { |
| return !(__a == __b); |
| } |
| |
| #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_ADVANCED_SFINAE) |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP_SCOPED_ALLOCATOR |
