std::future_error

 

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std::future_error

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.

future_error::future_error

future_error::code

future_error::what

 

Elemento definito nell'header <future>
class future_error;		(dal C++11)

Il std::future_error classe definisce un oggetto eccezione che viene generata in caso di fallimento da parte delle funzioni della libreria di thread che si occupano di esecuzione asincrona e stati condivisi (std::future, std::promise, ecc.) Simile a std::system_error, questa eccezione comporta un codice di errore compatibile con 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

Membri funzioni

(costruttore)	crea un oggetto 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. (metodo pubblico)
code	restituisce il codice di errore 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. (metodo pubblico)
what	restituisce la stringa esplicativa specifico del codice di errore 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. (metodo pubblico)

Inherited from std::logic_error

Inherited from std::exception

Member functions

(destructor) [virtuale]	distrugge l'oggetto eccezione 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. (metodo pubblico virtuale)
what [virtuale]	restituisce una stringa esplicativa 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. (metodo pubblico virtuale)

Esempio

#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";}}

Output:

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

Vedi anche

future_errc (C++11)	individua i codici di errore in futuro 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)