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std::promise::set_value

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< cpp‎ | thread‎ | promise

 
 
Tema Biblioteca de ayuda
Threads
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Threads
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thread(C++11)
this_thread espacio de nombres
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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)
Exclusión mutua
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Mutual exclusion
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mutex(C++11)
timed_mutex(C++11)
Gestión de bloqueos 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
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(C++11)
(C++11)
(C++11)
lock(C++11)
try_lock(C++11)
defer_lock
try_to_lock
adopt_lock
(C++11)
(C++11)
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Las variables de condición
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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::promise
Las funciones miembro
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Member functions
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promise::promise
promise::~promise
promise::operator=
promise::swap
Conseguir el resultado
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Getting the result
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promise::get_future
Ajuste del resultado
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Setting the result
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promise::set_value
promise::set_value_at_thread_exit
promise::set_exception
promise::set_exception_at_thread_exit
 
void set_value( const R& value );
(1) (único miembro de plantilla promise genérico)
(desde C++11)
void set_value( R&& value );
(2) (único miembro de plantilla promise genérico)
(desde C++11)
void set_value( R& value );
(3) (único miembro de especialización de plantilla promise<R&>)
(desde C++11)
void set_value()
(4) (único miembro de especialización de plantilla promise<void>)
(desde C++11)
Almacena el value en el estado compartido y hace que el estado listo .
Original:
Stores the value into the shared state and makes the state ready.
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La operación es atómica, es decir, que se comporta como si adquirir un mutex único asociado con el objeto promesa mientras se actualiza el objeto promesa .
Original:
The operation is atomic, i.e. it behaves as though they acquire a single mutex associated with the promise object while updating the promise object.
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Se produce una excepción si no hay un estado compartido o el estado compartido ya almacena un valor o una excepción .
Original:
An exception is thrown if there is no shared state or the shared state already stores a value or exception.
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Contenido

[editar] Parámetros

value -
valor a almacenar en el estado compartido
Original:
value to store in the shared state
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[editar] Valor de retorno

(Ninguno)
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(none)
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[editar] Excepciones

std::future_error en las siguientes condiciones:
Original:
std::future_error on the following conditions:
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  • *this no tiene un estado compartido. La categoría de error se establece en no_state .
    Original:
    *this has no shared state. The error category is set to no_state.
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  • El estado compartido ya almacena un valor o una excepción. La categoría de error se establece en promise_already_satisfied .
    Original:
    The shared state already stores a value or exception. The error category is set to promise_already_satisfied.
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Además:
Original:
Additionally:
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1-2)
Cualquier excepción lanzada por el constructor de copia de value
Original:
Any exception thrown by the copy constructor of value
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3)
Cualquier excepción lanzada por el constructor movimiento de value
Original:
Any exception thrown by the move constructor of value
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[editar] Ejemplo

[editar] Ver también

establece el resultado para indicar una excepción
Original:
sets the result to indicate an exception
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(miembro público función) [edit]