std::allocator_traits

 

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动态内存管理

低级别的内存管理
分配器 Original: Allocators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
allocator
allocator_traits （C++11）
allocator_arg_t （C++11）
allocator_arg （C++11）
uses_allocator （C++11）
scoped_allocator_adaptor （C++11）
未初始化的存储空间 Original: Uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
uninitialized_copy
uninitialized_copy_n （C++11）
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
智能指针 Original: Smart pointers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
unique_ptr （C++11）
shared_ptr （C++11）
weak_ptr （C++11）
auto_ptr （过时了）
owner_less （C++11）
enable_shared_from_this （C++11）
bad_weak_ptr （C++11）
default_delete （C++11）
垃圾收集的支持 Original: Garbage collection support The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
declare_reachable （C++11）
undeclare_reachable （C++11）
declare_no_pointers （C++11）
undeclare_no_pointers （C++11）
pointer_safety （C++11）
get_pointer_safety （C++11）
杂项 Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pointer_traits （C++11）
addressof （C++11）
align （C++11）
C库 Original: C Library The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
malloc calloc	realloc free

 

std::allocator_traits

成员函数 Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

allocator_traits::allocate

allocator_traits::deallocate

allocator_traits::construct

allocator_traits::destroy

allocator_traits::max_size

allocator_traits::select_on_container_copy_construction

 

Defined in header <memory>
template< class Alloc > struct allocator_traits;		（C++11 起）

allocator_traits类模板提供了标准化的方式来访问各种属性的分配器。容器的标准和其他标准库组件可以访问通过此模板的分配，这使得它可以使用任何类类型的分配器，只要用户提供专业化的allocator_traits实现所需的所有功能.

Original:

The allocator_traits class template provides the standardized way to access various properties of allocators. The standard containers and other standard library components access allocators through this template, which makes it possible to use any class type as an allocator, as long as the user-provided specialization of allocator_traits implements all required functionality.

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默认情况下，非专业的，allocator_traits包含以下成员：1

Original:

The default, non-specialized, allocator_traits contains the following members:

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会员类型

类型 Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
allocator_type	Alloc
value_type	Alloc::value_type
pointer	Alloc::pointer（如果存在），否则value_type* Original: Alloc::pointer if present, otherwise value_type* The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
const_pointer	Alloc::const_pointer（如果存在），否则std::pointer_traits<pointer>::rebind<const value_type> Original: Alloc::const_pointer if present, otherwise std::pointer_traits<pointer>::rebind<const value_type> The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
void_pointer	Alloc::void_pointer（如果存在），否则std::pointer_traits<pointer>::rebind<void> Original: Alloc::void_pointer if present, otherwise std::pointer_traits<pointer>::rebind<void> The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
const_void_pointer	Alloc::const_void_pointer（如果存在），否则std::pointer_traits<pointer>::rebind<const void> Original: Alloc::const_void_pointer if present, otherwise std::pointer_traits<pointer>::rebind<const void> The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
difference_type	Alloc::difference_type（如果存在），否则std::pointer_traits<pointer>::difference_type Original: Alloc::difference_type if present, otherwise std::pointer_traits<pointer>::difference_type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
size_type	Alloc::size_type（如果存在），否则std::make_unsigned<difference_type>::type Original: Alloc::size_type if present, otherwise std::make_unsigned<difference_type>::type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
propagate_on_container_copy_assignment	Alloc::propagate_on_container_copy_assignment（如果存在），否则std::false_type Original: Alloc::propagate_on_container_copy_assignment if present, otherwise std::false_type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
propagate_on_container_move_assignment	Alloc::propagate_on_container_move_assignment（如果存在），否则std::false_type Original: Alloc::propagate_on_container_move_assignment if present, otherwise std::false_type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
propagate_on_container_swap	Alloc::propagate_on_container_swap（如果存在），否则std::false_type Original: Alloc::propagate_on_container_swap if present, otherwise std::false_type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

会员别名模板

类型 Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
rebind_alloc<T>	Alloc::rebind<T>::other如果存在的话，否则Alloc<T, Args>的Alloc是Alloc<U, Args> Original: Alloc::rebind<T>::other if present, otherwise Alloc<T, Args> if this Alloc is Alloc<U, Args> The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
rebind_traits<T>	std::allocator_traits<rebind_alloc<T>>

成员函数

allocate [静态的] </ SPAN></div></div>	分配未初始化的存储，使用分配器 Original: allocates uninitialized storage using the allocator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共静态成员函数）
deallocate [静态的] </ SPAN></div></div>	释放存储使用分配器 Original: deallocates storage using the allocator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共静态成员函数）
construct [静态的] </ SPAN></div></div>	构造一个对象分配的存储空间 Original: constructs an object in the allocated storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数模板）
destroy [静态的] </ SPAN></div></div>	解构分配的存储空间中存储的对象 Original: destructs an object stored in the allocated storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数模板）
max_size [静态的] </ SPAN></div></div>	返回对象的最大规模​​的分配器支持 Original: returns the maximum object size supported by the allocator The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共静态成员函数）
select_on_container_copy_construction [静态的] </ SPAN></div></div>	获得分配器使用后复制一个标准集装箱 Original: obtains the allocator to use after copying a standard container The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共静态成员函数）

另请参阅

allocator	the default allocator （类模板）
scoped_allocator_adaptor （C++11）	实现多级的多级容器分配器 Original: implements multi-level allocator for multi-level containers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （类模板）
pointer_traits （C++11）	提供有关类似指针的类型的信息 Original: provides information about pointer-like types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （类模板）