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std::promise::get_future

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< cpp‎ | thread‎ | promise

 
 
スレッドのサポートライブラリ
スレッド
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Threads
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thread(C++11)
this_thread空間
Original:
this_thread namespace
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get_id(C++11)
yield(C++11)
sleep_for(C++11)
sleep_until(C++11)
相互排除
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Mutual exclusion
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mutex(C++11)
timed_mutex(C++11)
汎用のロック管理
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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)
条件変数
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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)
先物
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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::promise
メンバ関数
Original:
Member functions
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promise::promise
promise::~promise
promise::operator=
promise::swap
結果を取得する
Original:
Getting the result
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promise::get_future
結果を設定する
Original:
Setting the result
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promise::set_value
promise::set_value_at_thread_exit
promise::set_exception
promise::set_exception_at_thread_exit
 
std::future<R> get_future();
(C + + 11以来)
*thisと同じ共有状態に関連付けられている将来のオブジェクトを返します。.
Original:
Returns a future object associated with the same shared state as *this.
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*thisない共有状態またはget_futureがすでに呼び出されていないしている場合は、例外がスローされます。.
Original:
Exception is thrown if *this has no shared state or get_future has already been called.
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[編集] パラメータ

(なし)
Original:
(none)
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[編集] 値を返します

*thisの共有状態を参照する未来
Original:
A future referring to the shared state of *this
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[編集] 例外

以下の条件にstd::future_error
Original:
std::future_error on the following conditions:
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  • *thisない共有状態を持っていません。エラーカテゴリはno_stateに設定されています.
    Original:
    *this has no shared state. The error category is set to no_state.
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  • get_future()すでに*thisと同じ共有状態との約束に呼ばれてきた。エラーカテゴリはfuture_already_retrievedに設定されています.
    Original:
    get_future() has already been called on a promise with the same shared state as *this. The error category is set to future_already_retrieved.
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