std::future::valid

 

C++

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Algoritmi

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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)
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mutex (C++11) timed_mutex (C++11)	recursive_mutex (C++11) recursive_timed_mutex (C++11)
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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)
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condition_variable (C++11)
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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::future

future::future

future::~future

future::operator=

future::share

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.

future::get

Stato Original: State The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

future::valid

future::wait

future::wait_for

future::wait_until

 

bool valid()const;		(dal C++11)

Controlla se il futuro si riferisce ad uno stato condiviso con una promessa. Questo è l'unico caso di futures restituiti da std::promise::get_future(), std::packaged_task::get_future()std::async() o fino a quando la prima volta get()orshare() si chiama.

Original:

Checks if the future refers to a state shared with a promise. This is the case only for futures returned by std::promise::get_future(), std::packaged_task::get_future() or std::async() until the first time get()orshare() is called.

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Parametri

(Nessuno)

Original:

(none)

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Valore di ritorno

true * se si riferisce ad uno stato comune, altrimenti false.

Original:

true if *this refers to a shared state, otherwise false.

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Eccezioni

noexcept specification:  

noexcept

  (dal C++11)

Vedi anche

wait	attende il risultato diventi disponibile Original: waits for the result to become available The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)