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std::future_error

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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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Mutual exclusion
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mutex (C++11)
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Gestion du verrouillage générique
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Generic lock management
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lock_guard (C++11)
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(C++11)
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lock (C++11)
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defer_lock
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(C++11)
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Les variables de condition
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std::future_error
Les fonctions membres
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Member functions
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future_error::future_error
future_error::code
future_error::what
 
Defined in header <future>
class future_error;
(depuis C++11)
Le std::future_error classe définit un objet d'exception qui est levée en cas d'échec par les fonctions de la bibliothèque de threads qui traitent de l'exécution asynchrone et les Etats partagée (std::future, std::promise, etc.) Semblable à std::system_error, cette exception porte un code d'erreur compatible avec std::error_code .
Original:
The class std::future_error defines an exception object that is thrown on failure by the functions in the thread library that deal with asynchronous execution and shared states (std::future, std::promise, etc). Similar to std::system_error, this exception carries an error code compatible with std::error_code.
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cpp/error/exceptioncpp/error/logic errorstd-future error-inheritance.svg
À propos de cette image

Inheritance diagram

Sommaire

[modifier] Fonctions membres

crée un objet std::future_error
Original:
creates a std::future_error object
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(fonction membre publique) [edit]
retourne le code d'erreur
Original:
returns the error code
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(fonction membre publique) [edit]
renvoie la chaîne explicative spécifique au code d'erreur
Original:
returns the explanatory string specific to the error code
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(fonction membre publique) [edit]

Inherited from std::logic_error

Inherited from std::exception

Member functions

[
virtuel
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virtual
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]
Détruit l'objet exception
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destructs the exception object
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(function membre virtuelle publique de std::exception) [edit]
[
virtuel
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virtual
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]
retourne une chaîne explicative
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returns an explanatory string
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(function membre virtuelle publique de std::exception) [edit]

[modifier] Exemple

#include <future>
#include <iostream>
 
int main()
{
    std::future<int> empty;
    try {
        int n = empty.get();
    } catch (const std::future_error& e) {
        std::cout << "Caught a future_error with code \"" << e.code()
                  << "\"\nMessage: \"" << e.what() << "\"\n";
    }
}

Résultat :

Caught a future_error with code "future:3"
Message: "No associated state"

[modifier] Voir aussi

(C++11)
identifie les codes d'erreur futures
Original:
identifies the future error codes
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(enum) [edit]