Namespace
Varianti

std::system_error

Da cppreference.com.
< cpp‎ | error

 
 
Utilità libreria
Tipo di supporto (basic types, RTTI, type traits)
Gestione della memoria dinamica
La gestione degli errori
Programma di utilità
Funzioni variadic
Data e ora
Funzione oggetti
initializer_list(C++11)
bitset
hash(C++11)
Gli operatori relazionali
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Coppie e tuple
Original:
Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Swap, in avanti e spostare
Original:
Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
La gestione degli errori
Gestione delle eccezioni
Original:
Exception handling
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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)
Gestione delle eccezioni fallimenti
Original:
Exception handling failures
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terminate
terminate_handler
get_terminate(C++11)
set_terminate
unexpected(deprecato)
bad_exception
unexpected_handler(deprecato)
get_unexpected(C++11)(deprecato)
set_unexpected(deprecato)
Eccezione categorie
Original:
Exception categories
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logic_error
invalid_argument
domain_error
length_error
out_of_range
runtime_error
range_error
overflow_error
underflow_error
Codici di errore
Original:
Error codes
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Codici di errore
errno
Asserzioni
Original:
Assertions
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assert
impianto system_error
Original:
system_error facility
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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)
 
Defined in header <system_error>
class system_error;
(dal C++11)
std::system_error è il tipo di eccezione lanciata da varie funzioni di libreria (in genere le funzioni che si interfacciano con il sistema operativo servizi, ad esempio il costruttore di std::thread), quando l'eccezione ha un std::error_code associato che deve essere segnalato.
Original:
std::system_error is the type of the exception thrown by various library functions (typically the functions that interface with the OS facilities, e.g. the constructor of std::thread), when the exception has an associated std::error_code which needs to be reported.
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cpp/error/exceptioncpp/error/runtime errorstd-system error-inheritance.svg
Informazioni sull'immagine

Inheritance diagram

Indice

[modifica] Membri funzioni

costruisce l'oggetto system_error
Original:
constructs the system_error object
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(membro pubblico funzione) [edit]
restituisce il codice di errore
Original:
returns error code
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(membro pubblico funzione) [edit]
[virtuale]
restituisce stringa esplicativa
Original:
returns explanatory string
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(pubblico virtuale membro funzione) [edit]

Inherited from std::exception

Member functions

[virtuale]
distrugge l'oggetto eccezione
Original:
destructs the exception object
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(pubblico virtuale membro of std::exception funzione) [edit]
[virtuale]
restituisce una stringa esplicativa
Original:
returns an explanatory string
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(pubblico virtuale membro of std::exception funzione) [edit]

[modifica] Esempio

#include <thread>
#include <iostream>
#include <system_error>
 
int main()
{
    try {
        std::thread().detach(); // attempt to detach a non-thread
    } catch(const std::system_error& e) {
        std::cout << "Caught system_error with code " << e.code() 
                  << " meaning " << e.what() << '\n';
    }
}

Output:

Caught system_error with code generic:22 meaning Invalid argument