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std::packaged_task::get_future

Da cppreference.com

 
 
Biblioteca de suporte a discussão
Threads
Original:
Threads
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thread(C++11)
this_thread namespace
Original:
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::packaged_task
Funções de membro
Original:
Member functions
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packaged_task::packaged_task
packaged_task::~packaged_task
packaged_task::operator=
packaged_task::valid
packaged_task::swap
Obtendo o resultado
Original:
Getting the result
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packaged_task::get_future
Execução
Original:
Execution
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packaged_task::operator()
packaged_task::make_ready_at_thread_exit
packaged_task::reset
 
std::future<R> get_future();
(a partir do C++ 11)
Retorna uma future que compartilha o mesmo estado compartilhado como *this.
Original:
Returns a future which shares the same shared state as *this.
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get_future pode ser chamado apenas uma vez para cada packaged_task.
Original:
get_future can be called only once for each packaged_task.
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[editar] Parâmetros

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

Um futuro que compartilha o mesmo estado compartilhado como *this.
Original:
A future which shares the same shared state as *this.
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[editar] Exceções

std::future_error sobre as condições de erro seguintes:
Original:
std::future_error on the following error conditions:
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  • O estado compartilhado já foi recuperada através de uma chamada para get_future. A categoria de erro é definido para future_already_retrieved.
    Original:
    The shared state has already been retrieved via a call to get_future. The error category is set to future_already_retrieved.
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  • *this não tem estado compartilhado. A categoria de erro é definido para no_state.
    Original:
    *this has no shared state. The error category is set to no_state.
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