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std::promise::set_exception

Da cppreference.com.
< cpp‎ | thread‎ | promise

 
 
Discussione libreria di supporto
Threads
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Threads
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thread(C++11)
this_thread spazio dei nomi
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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)
Mutua esclusione
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Mutual exclusion
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mutex(C++11)
timed_mutex(C++11)
Blocco di gestione generico
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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)
Condizioni variabili
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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)
Futures
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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
Membri funzioni
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Member functions
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promise::promise
promise::~promise
promise::operator=
promise::swap
Ottenere il risultato
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Getting the result
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promise::get_future
Impostazione del risultato
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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_exception( std::exception_ptr p );
(dal C++11)
Memorizza il p puntatore eccezione nello stato condiviso e rende lo stato di pronto.
Original:
Stores the exception pointer p into the shared state and makes the state ready.
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L'operazione è atomica, cioè si comporta come se acquisire un mutex singolo associato all'oggetto promessa durante l'aggiornamento l'oggetto promessa.
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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, Viene generata un'eccezione se non vi è stato condiviso o lo stato condiviso memorizza già un valore o eccezione.
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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Indice

[modifica] Parametri

p -
Eccezione puntatore per memorizzare
Original:
exception pointer to store
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[modifica] Valore di ritorno

(Nessuno)
Original:
(none)
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[modifica] Eccezioni

std::future_error alle seguenti condizioni:
Original:
std::future_error on the following conditions:
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  • *this non ha stato condiviso. La categoria di errore è impostato no_state.
    Original:
    *this has no shared state. The error category is set to no_state.
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  • Lo stato condiviso memorizza già un valore o eccezione. La categoria di errore è impostato 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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[modifica] Esempio

[modifica] Vedi anche

imposta il risultato per indicare un'eccezione offrendo allo stesso tempo la notifica solo dal thread
Original:
sets the result to indicate an exception while delivering the notification only at thread exit
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(membro pubblico funzione) [edit]