std::future_error

 

C++

Lenguaje

Cabeceras

Conceptos

Biblioteca de utilidades

Biblioteca de cadenas

Biblioteca de contenedores

Biblioteca de algoritmos

Biblioteca de iteradores

Biblioteca numérica

Biblioteca de entrada/salida

Biblioteca de localización

Biblioteca de expresiones regulares (C++11)

Biblioteca de operaciones atómicas (C++11)

Biblioteca de tareas/subprocesos (C++11)

 

Tema Biblioteca de ayuda

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 espacio de nombres 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)
Exclusión mutua Original: Mutual exclusion The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
mutex (C++11) timed_mutex (C++11)	recursive_mutex (C++11) recursive_timed_mutex (C++11)
Gestión de bloqueos genérico Original: Generic lock management The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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)
Las variables de condición Original: Condition variables The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
condition_variable (C++11)
condition_variable_any (C++11)
notify_all_at_thread_exit (C++11)
cv_status (C++11)
Futuros Original: Futures The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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_error

Las funciones miembro 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

 

Defined in header <future>
class future_error;		(desde C++11)

El std::future_error clase define un objeto de excepción que se produce en caso de fallo de las funciones de la biblioteca de subprocesos que tienen que ver con la ejecución asincrónica y estados compartida (std::future, std::promise, etc). Al igual que std::system_error, esta excepción lleva un código de error compatible 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.

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

Inheritance diagram

Las funciones miembro

(constructor)	crea un objeto 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. (miembro público función)
code	devuelve el código de error 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. (miembro público función)
what	devuelve la cadena de motivos específicos para el código de error 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. (miembro público función)

Inherited from std::logic_error

Inherited from std::exception

Member functions

(destructor) [virtual]	destructs el objeto de excepción 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. (Virtual Member público of std::exception función)
what [virtual]	devuelve una cadena explicativa 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. (Virtual Member público of std::exception función)

Ejemplo

#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"

Ver también

future_errc (C++11)	identifica los códigos de error en el 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)