std::future_error – cppreference.com

std::future_error

Aus cppreference.com

<metanoindex/>

 
C++
 
Thema Support-Bibliothek
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 Namespace
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)
Gegenseitigen Ausschluss
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)
Generische Sperrverwaltung
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)
Zustand Variablen
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)
Futures
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
Member-Funktionen
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
 
<tbody> </tbody>
definiert in Header <future>
class future_error;
 (seit C++11)
Die Klasse std::future_error definiert eine Ausnahme-Objekt, das im Fehlerfall durch die Funktionen in der Thread-Bibliothek geworfen wird, die sich mit asynchronen Ausführung und gemeinsame Zustände (std::future, std::promise, etc). Ähnlich std::system_error trägt diese Ausnahme ein Fehlercode mit 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.
cpp/error/exceptioncpp/error/logic error

Inheritance diagram

Member-Funktionen
schafft eine std::future_error Objekt
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.

(öffentliche Elementfunktion) [edit]
gibt den Fehlercode
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.

(öffentliche Elementfunktion) [edit]
gibt die erklärende Zeichenfolge für den Fehlercode
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.

(öffentliche Elementfunktion) [edit]

Inherited from std::logic_error

Inherited from std::exception

Member functions

[virtuell]
Zerstört das Ausnahme-Objekt
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.

(virtuellen öffentlichen Member-Funktion of std::exception) [edit]
[virtuell]
gibt einen erläuternden String
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.

(virtuellen öffentlichen Member-Funktion of std::exception) [edit]

Beispiel

#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"

Siehe auch