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std::future::valid

De cppreference.com
< cpp‎ | thread‎ | future

 
 
Bibliothèque de support fil
Threads
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Threads
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thread (C++11)
this_thread espace de noms
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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)
L'exclusion mutuelle
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Mutual exclusion
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mutex (C++11)
timed_mutex (C++11)
Gestion du verrouillage générique
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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)
Les variables de condition
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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::future
future::future
future::~future
future::operator=
future::share
Obtenir le résultat
Original:
Getting the result
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future::get
État
Original:
State
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future::valid
future::wait
future::wait_for
future::wait_until
 
bool valid() const;
(depuis C++11)
Vérifie si l'avenir se réfère à un état partagé avec une promesse. C'est le seul cas des contrats à terme renvoyés par std::promise::get_future(), std::packaged_task::get_future() ou std::async() jusqu'à ce que la première fois get()or share() est appelé .
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()or share() is called.
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Sommaire

[modifier] Paramètres

(Aucun)
Original:
(none)
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[modifier] Retourne la valeur

true si ce * fait référence à un état partagé, sinon false .
Original:
true if *this refers to a shared state, otherwise false.
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[modifier] Exceptions

noexcept specification:  
noexcept
   (depuis C++11)

[modifier] Exemple

[modifier] Voir aussi

attend le résultat soit disponible
Original:
waits for the result to become available
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(fonction membre publique) [edit]