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std::thread::hardware_concurrency

De cppreference.com

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Biblioteca de suporte a discussão
Threads
Original:
Threads
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(C++11)
this_thread namespace
Original:
this_thread namespace
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(C++11)
(C++11)
(C++11)
Exclusão mútua
Original:
Mutual exclusion
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(C++11)
Gestão de bloqueio genérico
Original:
Generic lock management
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(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
Variáveis ​​de condição
Original:
Condition variables
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(C++11)
Futuros
Original:
Futures
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(C++11)
(C++11)
(C++11)
(C++11)
 
std::thread
Aulas-Membros
Original:
Member classes
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thread::id
Funções de membro
Original:
Member functions
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thread::thread
thread::~thread
thread::operator=
Observadores
Original:
Observers
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thread::joinable
thread::get_id
thread::native_handle
thread::hardware_concurrency
Operações
Original:
Operations
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thread::join
thread::detach
thread::swap
Não-membros funções
Original:
Non-member functions
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<tbody> </tbody>
static unsigned hardware_concurrency();
(desde C++11)
Retorna o número de threads simultâneos suportados pela implementação. O valor deve ser considerado apenas uma sugestão.
Original:
Returns number of concurrent threads supported by the implementation. The value should be considered only a hint.
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Parâmetros

(Nenhum)
Original:
(none)
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Valor de retorno

número de threads simultâneos suportados. Se o valor não está bem definida ou não computáveis, retorna 0.
Original:
number of concurrent threads supported. If the value is not well defined or not computable, returns 0.
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Exceções

noexcept specification:  
<tbody> </tbody>
noexcept
  (desde C++11)

Exemplo