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    std::future_error

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    C++
     
    Thema Support-Bibliothek
    Threads
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    Threads
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    thread(C++11)
    this_thread Namespace
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    this_thread namespace
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    get_id(C++11)
    yield(C++11)
    sleep_for(C++11)
    sleep_until(C++11)
    Gegenseitigen Ausschluss
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    Mutual exclusion
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    mutex(C++11)
    timed_mutex(C++11)
    Generische Sperrverwaltung
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    Generic lock management
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    lock(C++11)
    try_lock(C++11)
    defer_lock
    try_to_lock
    adopt_lock    		(C++11)
    (C++11)
    (C++11)
    Zustand Variablen
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    Condition variables
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    condition_variable(C++11)
    condition_variable_any(C++11)
    notify_all_at_thread_exit(C++11)
    cv_status(C++11)
    Futures
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    Futures
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    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
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    Member functions
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    future_error::future_error
    future_error::code
    future_error::what
     
    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.
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    cpp/error/exceptioncpp/error/logic errorstd-future error-inheritance.svg
    Über dieses Bild

    Inheritance diagram

    Inhaltsverzeichnis

    [Bearbeiten]Member-Funktionen

    schafft eine std::future_error Objekt
    Original:
    creates a std::future_error object
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    (öffentliche Elementfunktion)[edit]
    gibt den Fehlercode
    Original:
    returns the error code
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    (öffentliche Elementfunktion)[edit]
    gibt die erklärende Zeichenfolge für den Fehlercode
    Original:
    returns the explanatory string specific to the error code
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    (öffentliche Elementfunktion)[edit]

    Inherited from std::logic_error

    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
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    returns an explanatory string
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    (virtuellen öffentlichen Member-Funktion of std::exception)[edit]

    [Bearbeiten]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"

    [Bearbeiten]Siehe auch

    (C++11)
    auf die künftigen Fehlercodes
    Original:
    identifies the future error codes
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    (enum)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/thread/future_error&oldid=30051“
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