Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Node Map (adoc) — Chinese (Simplified Han script) @ Boost-Weblate: Chunk size internally used in xref:concurrent_node_map_bulk

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Key	English	Chinese (Simplified Han script)
	Configuration Macros	配置宏
	`BOOST_UNORDERED_DISABLE_REENTRANCY_CHECK`	`BOOST_UNORDERED_DISABLE_REENTRANCY_CHECK`
	In debug builds (more precisely, when link:../../../../../assert/doc/html/assert.html#boost_assert_is_void[`BOOST_ASSERT_IS_VOID`^] is not defined), __container reentrancies__ (illegaly invoking an operation on `m` from within a function visiting elements of `m`) are detected and signalled through `BOOST_ASSERT_MSG`. When run-time speed is a concern, the feature can be disabled by globally defining this macro.	在调试版本中（更准确地说，当未定义 link:../../../../../assert/doc/html/assert.html#boost_assert_is_void[`BOOST++_++ASSERT++_++IS++_++VOID`] 时），系统会检测__容器重入__行为（即在访问 `m` 元素的函数内部非法调用 `m` 上的操作），并通过 `BOOST++_++ASSERT++_++MSG` 发出信号。若需关注运行时速度，可通过全局定义此宏来禁用该功能。
:445	---	---
	`BOOST_UNORDERED_ENABLE_STATS`	`BOOST_UNORDERED_ENABLE_STATS`
	Globally define this macro to enable xref:reference/stats.adoc#stats[statistics calculation] for the table. Note that this option decreases the overall performance of many operations.	全局定义此宏以启用容器的 xref:reference/stats.adoc#stats[统计计算] 功能。请注意，此选项会降低多数操作的总体性能。
:452	---	---
	Typedefs	类型定义
	A class for holding extracted table elements, modelling https://en.cppreference.com/w/cpp/container/node_handle[NodeHandle].	用于保存提取的表元素的类，建模为 https://en.cppreference.com/w/cpp/container/node_handle[NodeHandle] 。
:464	---	---
	A specialization of an internal class template:	内部类模板的特化：
	with `NodeType` = `node_type`.	其中 `NodeType` = `node++_++type` 。
:485	---	---
	Constants	常量
	```cpp static constexpr size_type bulk_visit_size; ```	```cpp static constexpr size_type bulk_visit_size; ```
	Chunk size internally used in xref:concurrent_node_map_bulk_visit[bulk visit] operations.	内部用于 xref:concurrent_node_map_bulk_visit[批量访问] 操作的块大小。
:495	---	---
	Constructors	构造函数
	Default Constructor	默认构造函数
	```c++ concurrent_node_map(); ```	```c++ concurrent_node_map(); ```
	Constructs an empty table using `hasher()` as the hash function, `key_equal()` as the key equality predicate and `allocator_type()` as the allocator.	构造一个空哈希表，使用 `hasher()` 作为哈希函数，`key_equal()` 作为键相等谓词，`allocator_type()` 作为分配器。
:508	Postconditions:;; `size() == 0` Requires:;; If the defaults are used, `hasher`, `key_equal` and `allocator_type` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].	后置条件：;; `size() == 0` 要求：;; 若使用默认参数，则 `hasher`、`key_equal` 和 `allocator_type` 必须满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[默认可构造]。
:511	---	---
	Bucket Count Constructor	桶数构造函数
	```c++ explicit concurrent_node_map(size_type n, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()); ```	```c++ explicit concurrent_node_map(size_type n, const hasher& hf = hasher(), const key_equal& eql = key_equal(), const allocator_type& a = allocator_type()); ```
	Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate, and `a` as the allocator.	构造一个至少包含 `n` 个桶的空哈希表，使用 `hf` 作为哈希函数，`eql` 作为键相等谓词，`a` 作为分配器。
:525	Postconditions:;; `size() == 0` Requires:;; If the defaults are used, `hasher`, `key_equal` and `allocator_type` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].	后置条件：;; `size() == 0` 要求：;; 若使用默认参数，则 `hasher`、`key_equal` 和 `allocator_type` 必须满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[默认可构造]。
:528	---	---
	Iterator Range Constructor	迭代器范围构造函数
	Constructs an empty table with at least `n` buckets, using `hf` as the hash function, `eql` as the key equality predicate and `a` as the allocator, and inserts the elements from `[f, l)` into it.	构造一个至少包含 `n` 个桶的空容器，使用 `hf` 作为哈希函数、 `eql` 作为键相等性谓词、 `a` 作为分配器，并将 `++[++f, l)` 范围内的元素插入其中。
:544	Requires:;; If the defaults are used, `hasher`, `key_equal` and `allocator_type` need to be https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[DefaultConstructible^].	要求;; 若使用默认值，则 `hasher` 、 `key++_++equal` 和 `allocator++_++type` 需满足 https://en.cppreference.com/w/cpp/named_req/DefaultConstructible[可默认构造] 要求。

Key	English	Chinese (Simplified Han script)
	Visitation functions executed by a `boost::concurrent_node_map` `x` are not allowed to invoke any operation on `x`; invoking operations on a different `boost::concurrent_node_map` instance `y` is allowed only if concurrent outstanding operations on `y` do not access `x` directly or indirectly.	由 `boost::concurrent++_++node++_++map` 实例 `x` 执行的访问函数不允许调用 `x` 上的任何操作；仅当对另一 `boost::concurrent++_++node++_++map` 实例 `y` 的并发未完成操作不会直接或间接访问 `x` 时，才会允许调用 `y` 上的操作。
	Typedefs	类型定义
	Chunk size internally used in xref:concurrent_node_map_bulk_visit[bulk visit] operations.	内部用于 xref:concurrent_node_map_bulk_visit[批量访问] 操作的块大小。
	A specialization of an internal class template:	内部类模板的特化：
	A class for holding extracted table elements, modelling https://en.cppreference.com/w/cpp/container/node_handle[NodeHandle].	用于保存提取的表元素的类，建模为 https://en.cppreference.com/w/cpp/container/node_handle[NodeHandle] 。
	Concurrency Requirements and Guarantees	并发要求与保证
	Copy construction from `al` of an allocator rebound from `Alloc`	从 `al` 复制构造重新绑定的分配器
	`std::allocator_traits<Alloc>::allocate`	`std::allocator_traits<alloc>::allocate`</alloc>
	`std::allocator_traits<Alloc>::deallocate`	`std::allocator_traits<alloc>::deallocate`</alloc>
	`std::allocator_traits<Alloc>::construct`	`std::allocator_traits<alloc>::construct`</alloc>
	In general, these requirements on `Hash`, `Pred` and `Allocator` are met if these types are not stateful or if the operations only involve constant access to internal data members.	通常而言，若 `Hash` 、 `Pred` 和 `Allocator` 这些类型不包含状态，或其操作仅涉及对内部数据成员的常量访问，即可满足上述要求。
	With the exception of destruction, concurrent invocations of any operation on the same instance of a `concurrent_node_map` do not introduce data races — that is, they are thread-safe.	除析构操作外，对同一个 `concurrent++_++node++_++map` 实例并发调用任何操作都不会引入数据竞争——即这些操作是线程安全的。
	If an operation op is explicitly designated as _blocking on_ `x`, where `x` is an instance of a `boost::concurrent_node_map`, prior blocking operations on `x` synchronize with op. So, blocking operations on the same `concurrent_node_map` execute sequentially in a multithreaded scenario.	如果某个操作 op 被显式指定为__阻塞于__ `x` （其中 `x` 是 `boost::concurrent++_++node++_++map` 的实例），则先前对 `x` 的阻塞操作将与 op 同步。因此，在多线程场景中，对同一 `concurrent++_++node++_++map` 的阻塞操作将按顺序执行。
	When executed internally by a `boost::concurrent_node_map`, the following operations by a user-provided visitation function on the element passed do not introduce data races:	当由 `boost::concurrent++_++node++_++map` 在内部执行时，用户提供的访问函数对传递的元素执行以下操作不会引入数据竞争：
	Non-mutable modification of the element.	对元素的非可变修改。
	Any `boost::concurrent_node_map operation` that inserts or modifies an element `e` synchronizes with the internal invocation of a visitation function on `e`.	任何插入或修改元素 `e` 的 `boost::concurrent++_++node++_++map 操作 ` 都会与对 `e` 执行的内部访问函数的调用同步。
:1013	---	---
:1021	Inserts `obj` in the table if and only if there is no element in the table with an equivalent key.	当且仅当哈希表中不存在键等价的元素时，将`obj`插入表中。
:1029	---	---
:1037	Inserts `obj` in the table if and only if there is no element in the table with an equivalent key.	当且仅当哈希表中不存在等价键的元素时，将`obj`插入表中。
:1045	---	---
:1052	Equivalent to [listing,subs="+macros,+quotes"]	等价于 [listing,subs="+macros,+quotes"]
:1059	Returns:;; The number of elements inserted.	返回值：;; 成功插入的元素数量。
:1061	---	---
:1068	Equivalent to [listing,subs="+macros,+quotes"]	等价于 [listing,subs="+macros,+quotes"]
:1075	Returns:;; The number of elements inserted.	返回值：;; 成功插入的元素个数。
:1077	---	---
:1088	Returns:;; An `insert_return_type` object constructed from `inserted` and `node`: +	返回值：;; 由`inserted`和`node`构造的`insert_return_type`对象：
:1089	If `nh` is empty, `inserted` is `false` and `node` is empty.	若 `nh` 为空，则 `inserted` 为 `false` 且 `node` 为空。
:1090	Otherwise if the insertion took place, `inserted` is true and `node` is empty.	若插入操作成功，则 `inserted` 为 true，且 `node` 为空。

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