std::promise::set_value

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

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Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Discussione libreria di supporto

Threads Original: Threads The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
thread (C++11)
this_thread spazio dei nomi Original: this_thread namespace The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
get_id (C++11) yield (C++11)	sleep_for (C++11) sleep_until (C++11)
Mutua esclusione Original: Mutual exclusion The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
mutex (C++11) timed_mutex (C++11)	recursive_mutex (C++11) recursive_timed_mutex (C++11)
Blocco di gestione generico Original: Generic lock management The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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 Original: Condition variables The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
condition_variable (C++11)
condition_variable_any (C++11)
notify_all_at_thread_exit (C++11)
cv_status (C++11)
Futures Original: Futures The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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 Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

promise::promise

promise::~promise

promise::operator=

promise::swap

Ottenere il risultato Original: Getting the result The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

promise::get_future

Impostazione del risultato Original: Setting the result The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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)	(unico membro del modello promise generico) (dal C++11)
void set_value( R&& value );	(2)	(unico membro del modello promise generico) (dal C++11)
void set_value( R& value );	(3)	(unico membro del modello di specializzazione promise<R&>) (dal C++11)
void set_value()	(4)	(unico membro del modello di specializzazione promise<void>) (dal C++11)

Memorizza il value nello stato condiviso e rende lo stato di pronto.

Original:

Stores the value 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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Parametri

value

-

valore da memorizzare in stato condiviso Original: value to store in the shared state The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

(Nessuno)

Original:

(none)

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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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Inoltre:

Original:

Additionally:

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1-2)

Qualsiasi eccezione generata dal costruttore di copia di value

Original:

Any exception thrown by the copy constructor of value

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3)

Qualsiasi eccezione generata dal costruttore mossa di value

Original:

Any exception thrown by the move constructor of value

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Vedi anche

set_exception	imposta il risultato per indicare un'eccezione Original: sets the result to indicate an exception The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)