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    std::packaged_task::packaged_task

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    <metanoindex/>

     
    C++
     
    Thema Support-Bibliothek
    Threads
    Original:
    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
    Original:
    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::packaged_task
    Member-Funktionen
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    Member functions
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    packaged_task::packaged_task
    packaged_task::~packaged_task
    packaged_task::operator=
    packaged_task::valid
    packaged_task::swap
    Erste das Ergebnis
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    Getting the result
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    packaged_task::get_future
    Execution
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    Execution
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    packaged_task::operator()
    packaged_task::make_ready_at_thread_exit
    packaged_task::reset
     
    <tbody> </tbody>
    packaged_task()
    		 (1)
    template <class F> explicit packaged_task(F&& f)
    		 (2)
    template <class F, class Allocator> explicit packaged_task(std::allocator_arg_t, const Allocator& a, F&& f)
    		 (3)
    packaged_task(const packaged_task&) = delete
    		 (4)
    packaged_task(packaged_task&& rhs)
    		 (5)
    1) Constructs a std::packaged_task object with no task and no shared state.
    2) Constructs a std::packaged_task object with a shared state and a copy of the task, initialized with std::forward<F>(f).
    3) Constructs a std::packaged_task object with a shared state and a copy of the task, initialized with std::forward<F>(f). Uses the provided allocator to allocate memory necessary to store the task.
    4) The copy constructor is deleted, std::packaged_task is move-only.
    Anmerkung: C + 11 ist nicht festgelegt, hier const ist dies der defect 2067 .
    Original:
    Note: C++11 does not specify const here, this is the defect 2067.
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    5) Constructs a std::packaged_task with the shared state and task formerly owned by rhs, leaving rhs with no shared state and a moved-from task.

    Parameter

    f - the callable target (function, member function, lambda-expression, functor) to execute
    a - the allocator to use when storing the task
    rhs -
    Die std::packaged_task aus bewegen
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    the std::packaged_task to move from
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    Ausnahmen

    1)

    noexcept specification:  
    <tbody> </tbody>
    noexcept
      (seit C++11)

    2-3) Any exceptions thrown by copy/move constructor of f and possiblly std::bad_alloc if the allocation fails.

    5)

    noexcept specification:  
    <tbody> </tbody>
    noexcept
      (seit C++11)

    Beispiel

    This section is incomplete
    Reason: no example