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    std::packaged_task::get_future

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    <metanoindex/>

     
    C++
     
    Discussione libreria di supporto
    Threads
    Original:
    Threads
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    thread(C++11)
    this_thread spazio dei nomi
    Original:
    this_thread namespace
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    get_id(C++11)
    yield(C++11)
    sleep_for(C++11)
    sleep_until(C++11)
    Mutua esclusione
    Original:
    Mutual exclusion
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    mutex(C++11)
    timed_mutex(C++11)
    Blocco di gestione generico
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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)
    Condizioni variabili
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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
    Original:
    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
    Membri funzioni
    Original:
    Member functions
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    packaged_task::packaged_task
    packaged_task::~packaged_task
    packaged_task::operator=
    packaged_task::valid
    packaged_task::swap
    Ottenere il risultato
    Original:
    Getting the result
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    packaged_task::get_future
    Esecuzione
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    Execution
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    packaged_task::operator()
    packaged_task::make_ready_at_thread_exit
    packaged_task::reset
     
    <tbody> </tbody>
    std::future<R> get_future();
    		 (dal C++11)
    Restituisce un future che condivide lo stesso stato condiviso come *this.
    Original:
    Returns a future which shares the same shared state as *this.
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    get_future può essere chiamato solo una volta per ogni packaged_task.
    Original:
    get_future can be called only once for each packaged_task.
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    Parametri

    (Nessuno)
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    (none)
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    Valore di ritorno

    Un futuro che condivide lo stesso stato condiviso come *this.
    Original:
    A future which shares the same shared state as *this.
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    Eccezioni

    std::future_error sulle condizioni di errore seguenti:
    Original:
    std::future_error on the following error conditions:
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    • Lo stato condiviso è già stato recuperato tramite una chiamata a get_future. La categoria di errore è impostato future_already_retrieved.
      Original:
      The shared state has already been retrieved via a call to get_future. The error category is set to future_already_retrieved.
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    • *this non ha stato condiviso. La categoria di errore è impostato no_state.
      Original:
      *this has no shared state. The error category is set to no_state.
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