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78 lines
2.0 KiB
78 lines
2.0 KiB
5 years ago
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namespace std
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{
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/**
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* @brief The "standard" allocator, as per [20.4].
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*
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* The private _Alloc is "SGI" style. (See comments at the top
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* of stl_alloc.h.)
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*
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* The underlying allocator behaves as follows.
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* - __default_alloc_template is used via two typedefs
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* - "__single_client_alloc" typedef does no locking for threads
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* - "__alloc" typedef is threadsafe via the locks
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* - __new_alloc is used for memory requests
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*
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* (See @link Allocators allocators info @endlink for more.)
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*/
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template<typename _Tp>
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class allocator
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{
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public:
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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typedef _Tp* pointer;
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typedef const _Tp* const_pointer;
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typedef _Tp& reference;
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typedef const _Tp& const_reference;
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typedef _Tp value_type;
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template<typename _Tp1>
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struct rebind;
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allocator() throw();
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allocator(const allocator&) throw();
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template<typename _Tp1>
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allocator(const allocator<_Tp1>&) throw();
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~allocator() throw();
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pointer
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address(reference __x) const;
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const_pointer
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address(const_reference __x) const;
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// NB: __n is permitted to be 0. The C++ standard says nothing
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// about what the return value is when __n == 0.
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_Tp*
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allocate(size_type __n, const void* = 0);
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// __p is not permitted to be a null pointer.
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void
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deallocate(pointer __p, size_type __n);
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size_type
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max_size() const throw();
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void construct(pointer __p, const _Tp& __val);
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void destroy(pointer __p);
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};
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template<>
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class allocator<void>
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{
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public:
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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typedef void* pointer;
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typedef const void* const_pointer;
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typedef void value_type;
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template<typename _Tp1>
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struct rebind;
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};
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} // namespace std
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