std::system_category

 

C++

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Utilidades de la biblioteca

Escriba apoyo (basic types, RTTI, type traits)

Gestión de memoria dinámica

Gestión de errores

Programa de servicios públicos

Funciones variadic

Fecha y hora

Objetos Function

initializer_list (C++11)

bitset

hash (C++11)

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

rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=

Pares y tuplas Original: Pairs and tuples The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

Cambiar, hacia adelante y mover Original: Swap, forward and move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

Gestión de errores

Manejo de excepciones Original: Exception handling The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

exception

uncaught_exception

exception_ptr (C++11)

make_exception_ptr (C++11)

current_exception (C++11)

rethrow_exception (C++11)

nested_exception (C++11)

throw_with_nested (C++11)

rethrow_if_nested (C++11)

Fallas de control de excepciones Original: Exception handling failures The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

terminate

terminate_handler

get_terminate (C++11)

set_terminate

unexpected (obsoleto)

bad_exception

unexpected_handler (obsoleto)

get_unexpected (C++11)(obsoleto)

set_unexpected (obsoleto)

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

logic_error

invalid_argument

domain_error

length_error

out_of_range

runtime_error

range_error

overflow_error

underflow_error

Los códigos de error Original: Error codes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Los códigos de error

errno

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

assert

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

error_category (C++11)

generic_category (C++11)

system_category (C++11)

error_condition (C++11)

errc (C++11)

error_code (C++11)

system_error (C++11)

 

Definido en la cabecera <system_error>
const std::error_category& system_category();		(desde C++11)

Obtiene una referencia al objeto de error de categoría estática de los errores reportados por el sistema operativo. El objeto es necesaria para anular el error_category::name() función virtual para devolver un puntero a la cadena "system". También es necesario reemplazar la función virtual error_category::default_error_condition() para asignar los códigos de error que encuentro POSIX errno valores a std::generic_category .

Original:

Obtains a reference to the static error category object for errors reported by the operating system. The object is required to override the virtual function error_category::name() to return a pointer to the string "system". It is also required to override the virtual function error_category::default_error_condition() to map the error codes that match POSIX errno values to std::generic_category.

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Parámetros

(Ninguno)

Original:

(none)

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Valor de retorno

Una referencia al objeto estático de tipo no especificado de tiempo de ejecución, derivado de std::error_category .

Original:

A reference to the static object of unspecified runtime type, derived from std::error_category.

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Excepciones

noexcept specification:  

noexcept

  (desde C++11)

Ejemplo

#include <iostream>
#include <system_error>
#include <iomanip>
#include <string>
 
int main()
{
    std::error_condition econd = std::system_category().default_error_condition(EDOM);
    std::cout << "Category: " << econd.category().name() << '\n'
              << "Value: " << econd.value() << '\n'
              << "Message: " << econd.message() << '\n';
 
    econd = std::system_category().default_error_condition(10001);
    std::cout << "Category: " << econd.category().name() << '\n'
              << "Value: " << econd.value() << '\n'
              << "Message: " << econd.message() << '\n';
}

Salida:

Category: generic
Value: 33
Message: Numerical argument out of domain
Category: system
Value: 10001
Message: Unknown error 10001

Ver también

generic_category (C++11)	identifica la categoría de error genérico Original: identifies the generic error category The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
errc (C++11)	la enumeración std::error_condition lista de todos los estándares <cerrno> constantes macro Original: the std::error_condition enumeration listing all standard <cerrno> macro constants The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (clase)