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std::future::get

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< cpp‎ | thread‎ | future

 
 
Biblioteca de suporte a discussão
Threads
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Threads
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thread(C++11)
this_thread namespace
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this_thread namespace
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get_id(C++11)
yield(C++11)
sleep_for(C++11)
sleep_until(C++11)
Exclusão mútua
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Mutual exclusion
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mutex(C++11)
timed_mutex(C++11)
Gestão de bloqueio genérico
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Generic lock management
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lock_guard(C++11)
unique_lock(C++11)
defer_lock_t
try_to_lock_t
adopt_lock_t
(C++11)
(C++11)
(C++11)
lock(C++11)
try_lock(C++11)
defer_lock
try_to_lock
adopt_lock
(C++11)
(C++11)
(C++11)
Variáveis ​​de condição
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Condition variables
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condition_variable(C++11)
condition_variable_any(C++11)
notify_all_at_thread_exit(C++11)
cv_status(C++11)
Futuros
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Futures
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promise(C++11)
future(C++11)
shared_future(C++11)
packaged_task(C++11)
async(C++11)
launch(C++11)
future_status(C++11)
future_error(C++11)
future_category(C++11)
future_errc(C++11)
 
std::future
future::future
future::~future
future::operator=
future::share
Obtendo o resultado
Original:
Getting the result
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future::get
Estado
Original:
State
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future::valid
future::wait
future::wait_for
future::wait_until
 
T get();
(1) (único membro da modelo future genérico)
(a partir do C++ 11)
T& get();
(2) (único membro da future<T&> especialização modelo)
(a partir do C++ 11)
void get();
(3) (único membro da future<void> especialização modelo)
(a partir do C++ 11)
O método get espera até que o future tem um resultado válido e (dependendo do modelo é usado) recupera. Ele efetivamente chama wait(), a fim de aguardar o resultado.
Original:
The get method waits until the future has a valid result and (depending on which template is used) retrieves it. It effectively calls wait() in order to wait for the result.
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O modelo genérico e duas especializações modelo, contêm uma única versão de get. As três versões de get diferem apenas no tipo de retorno.
Original:
The generic template and two template specializations each contain a single version of get. The three versions of get differ only in the return type.
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valid()  == false após uma chamada para este método.
Original:
valid()  == false after a call to this method.
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Índice

[editar] Parâmetros

(Nenhum)
Original:
(none)
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[editar] Valor de retorno

1)
O valor armazenado no estado compartilhado. Desde que preencha os requisitos da MoveAssignable, o valor é movido, caso contrário, ele é copiado.
Original:
The value stored in the shared state. If it satisfies the requirements of MoveAssignable, the value is moved, otherwise it is copied.
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2)
Referência ao valor no estado compartilhado.
Original:
Reference to the value in the shared state.
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3)
Nada.
Original:
Nothing.
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[editar] Exceções

Se uma exceção foi armazenado no estado compartilhado referenciado pelo futuro (por exemplo, através de uma chamada para std::promise::set_exception) depois que exceção será lançada.
Original:
If an exception was stored in the shared state referenced by the future (e.g. via a call to std::promise::set_exception) then that exception will be thrown.
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[editar] Exemplo

[editar] Veja também

Verifica se o futuro tem estado compartilhado com uma promessa
Original:
checks if the future has shared state with a promise
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(função pública membro) [edit]