Boost Unordered Translation (zh_Hans)/Doc / Modules / Root / Pages / Reference / Concurrent Node Map (adoc)

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32 :403

	English 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. 180/10000 · 180
33 :406

	English 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. 183/10000 · 183
34 :409

	English 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. 291/10000 · 291
35 :413

	English An operation is said to be _blocking on rehashing of_ ``__x__`` if it blocks on `x` only when an internal rehashing is issued. 126/10000 · 126
36 :416

	English 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: 174/10000 · 174
37 :419

	English Read access to the element. 27/10000 · 27
38 :420

	English Non-mutable modification of the element. 40/10000 · 40
39 :421

	English Mutable modification of the element: 36/10000 · 36
40 :422

	English Within a container function accepting two visitation functions, always for the first function. Within a non-const container function whose name does not contain `cvisit`, for the last (or only) visitation function. 220/10000 · 220
41 :425

	English Any `boost::concurrent_node_map operation` that inserts or modifies an element `e` synchronizes with the internal invocation of a visitation function on `e`. 157/10000 · 157
42 :428

	English 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. 294/10000 · 294
:432 :432

	English --- 3/10000 · 3
44 :434

	English Configuration Macros 20/10000 · 20
45 :436

	English `BOOST_UNORDERED_DISABLE_REENTRANCY_CHECK` 42/10000 · 42
46 :438

	English 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. 413/10000 · 413
:445 :445

	English --- 3/10000 · 3
48 :447

	English `BOOST_UNORDERED_ENABLE_STATS` 30/10000 · 30
49 :449

	English 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. 183/10000 · 183
:452 :452

	English --- 3/10000 · 3
51 :454

	English Typedefs 8/10000 · 8

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