std::future_error — cppreference.com

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Déclaré dans l'en-tête `<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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Inheritance diagram

Fonctions membres


(constructeur)	crée un objet `std::future_error` Original: creates a `std::future_error` object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction membre publique) [edit]

code	retourne le code d'erreur Original: returns the error code The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction membre publique) [edit]

what	renvoie la chaîne explicative spécifique au code d'erreur Original: returns the explanatory string specific to the error code The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction membre publique) [edit]

Inherited from std::logic_error

Inherited from std::exception

Member functions


[ virtuel Original: virtual The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ]	Détruit l'objet exception Original: destructs the exception object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (function membre virtuelle publique de `std::exception`) [edit]

[ virtuel Original: virtual The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. ]	retourne une chaîne explicative Original: returns an explanatory string The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (function membre virtuelle publique de `std::exception`) [edit]

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"

Voir aussi


	identifie les codes d'erreur futures Original: identifies the future error codes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (enum) [edit]