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std::system_error

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C++
 
Utilities-Bibliothek
 
Fehlerbehandlung
Exception Handling
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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)
Ausnahmebehandlung Ausfälle
Original:
Exception handling failures
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terminate
terminate_handler
get_terminate(C++11)
set_terminate
unexpected(veraltet)
bad_exception
unexpected_handler(veraltet)
get_unexpected(C++11)(veraltet)
set_unexpected(veraltet)
Exception Kategorien
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
Fehlercodes
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Error codes
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Fehlercodes
errno
Assertions
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Assertions
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assert
system_error Anlage
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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)
 
definiert in Header <system_error>
class system_error;
 (seit C++11)
std::system_error ist die Art der Ausnahme von verschiedenen Bibliotheksfunktionen (typischerweise die Funktionen, die eine Schnittstelle mit dem Betriebssystem Einrichtungen, z. B. der Konstruktor std::thread), wenn die Ausnahme eine zugehörige std::error_code zu meldenden braucht weist geworfen .
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
Über dieses Bild

Inheritance diagram

Inhaltsverzeichnis

[Bearbeiten] Member-Funktionen
baut die system_error Objekt
Original:
constructs the system_error object
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(öffentliche Elementfunktion) [edit]
gibt den Fehlercode
Original:
returns error code
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(öffentliche Elementfunktion) [edit]
[virtuell]
kehrt erklärende String
Original:
returns explanatory string
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(virtuellen öffentlichen Member-Funktion) [edit]

Inherited from std::exception

Member functions

[virtuell]
Zerstört das Ausnahme-Objekt
Original:
destructs the exception object
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(virtuellen öffentlichen Member-Funktion of std::exception) [edit]
[virtuell]
gibt einen erläuternden String
Original:
returns an explanatory string
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(virtuellen öffentlichen Member-Funktion of std::exception) [edit]

[Bearbeiten] Beispiel

#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
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/error/system_error&oldid=29321“