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std::packaged_task::operator()

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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
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)
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::packaged_task
Las funciones miembro
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Member functions
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packaged_task::packaged_task
packaged_task::~packaged_task
packaged_task::operator=
packaged_task::valid
packaged_task::swap
Conseguir el resultado
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Getting the result
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packaged_task::get_future
Ejecución
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Execution
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packaged_task::operator()
packaged_task::make_ready_at_thread_exit
packaged_task::reset
 
void operator()( ArgTypes... args );
(desde C++11)

Calls the stored task with args as the arguments. The return value of the task or any exceptions thrown are stored in the shared state. The shared state is made ready and any threads waiting for this are unblocked.

Contenido

[editar] Parámetros

args -
los parámetros que se pasan en la invocación de la tarea almacenados
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the parameters to pass on invocation of the stored task
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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 de error:
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std::future_error on the following error conditions:
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  • La tarea almacenada ya ha sido invocada. La categoría de error se establece en promise_already_satisfied .
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    The stored task has already been invoked. The error category is set to promise_already_satisfied.
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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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[editar] Notas

A successful call to opetator() synchronizes with a call to any member function of a std::future or std::shared_future that share their shared state with *this.

[editar] Ejemplo

[editar] Ver también

ejecuta la función de asegurar que el resultado está lista sólo una vez se cierra el subproceso actuales
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executes the function ensuring that the result is ready only once the current thread exits
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(miembro público función) [edit]