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std::future_errc

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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_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
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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_errc
Helper-Klassen
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Helper classes
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is_error_code_enum
Non-Member-Funktionen
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Non-member functions
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make_error_code
make_error_condition
 
Defined in header <ios>
enum class future_errc {

    broken_promise,
    future_already_retrieved,
    promise_already_satisfied,
    no_state

};
(seit C++11)

The scoped enumeration std::future_errc defines the error codes reported by std::future and related classes in std::future_error exception objects. Only four error codes are required, although the implementation may define additional error codes. Because the appropriate specialization of std::is_error_code_enum is provided, values of type std::future_errc are implicitly convertible to std::error_code.

Inhaltsverzeichnis

[Bearbeiten] Mitglied Konstanten

Constant
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Constant
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Explanation
broken_promise the asynchronous task abandoned its shared state
future_already_retrieved the contents of shared state were already accessed through std::future
promise_already_satisfied attempt to store a value in the shared state twice
no_state attempt to access std::promise or std::future without an associated shared state

[Bearbeiten] Helper-Klassen

extends the type trait std::is_error_code_enum to identify future error codes
(Klassen-Template)

[Bearbeiten] Non-Member-Funktionen

constructs a future error code
(Funktion)
constructs a future error_condition
(Funktion)

[Bearbeiten] Beispiel

[Bearbeiten] Siehe auch

hält einen plattformabhängigen Fehlercode
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holds a platform-dependent error code
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(Klasse) [edit]
hält einen tragbaren Fehlercode
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holds a portable error code
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(Klasse) [edit]