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19 :361

	English An allocator whose value type is the same as the table's value type. 68/10000 · 68
20 :371

	English Allocators using https://en.cppreference.com/w/cpp/named_req/Allocator#Fancy_pointers[fancy pointers] are supported. 116/10000 · 116
21 :375

	English The element nodes of the table are held into an internal _bucket array_. An node is inserted into a bucket determined by the hash code of its element, but if the bucket is already occupied (a _collision_), an available one in the vicinity of the original position is used. 272/10000 · 272
22 :379

	English The size of the bucket array can be automatically increased by a call to `insert`/`emplace`, or as a result of calling `rehash`/`reserve`. The _load factor_ of the table (number of elements divided by number of buckets) is never greater than `max_load_factor()`, except possibly for small sizes where the implementation may decide to allow for higher loads. 357/10000 · 357
23 :384

	English If `link:../../../../../container_hash/doc/html/hash.html#ref_hash_is_avalanchinghash[hash_is_avalanching]<Hash>::value` is `true`, the hash function is used as-is; otherwise, a bit-mixing post-processing stage is added to increase the quality of hashing at the expense of extra computational cost. 298/10000 · 298
:388 :388

	English --- 3/10000 · 3
25 :390

	English Concurrency Requirements and Guarantees 39/10000 · 39
26 :392

	English Concurrent invocations of `operator()` on the same const instance of `Hash` or `Pred` are required to not introduce data races. For `Alloc` being either `Allocator` or any allocator type rebound from `Allocator`, concurrent invocations of the following operations on the same instance `al` of `Alloc` are required to not introduce data races: 342/10000 · 342
27 :397

	English Copy construction from `al` of an allocator rebound from `Alloc` 64/10000 · 64
28 :398

	English `std::allocator_traits<Alloc>::allocate` 40/10000 · 40
29 :399

	English `std::allocator_traits<Alloc>::deallocate` 42/10000 · 42
30 :400

	English `std::allocator_traits<Alloc>::construct` 41/10000 · 41
31 :401

	English `std::allocator_traits<Alloc>::destroy` 39/10000 · 39
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

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