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std::atomic_flag:: test_and_set

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std::atomic_flag
定義先ヘッダ <atomic>
bool test_and_set ( std:: memory_order order =
std:: memory_order_seq_cst ) volatile noexcept ;
(1) (C++11以降)
bool test_and_set ( std:: memory_order order =
std:: memory_order_seq_cst ) noexcept ;
(2) (C++11以降)

std::atomic_flag の状態をアトミックに設定済み（ true ）に変更し、変更前の値を返します。

パラメータ

order - メモリ同期順序

関連項目

フラグをアトミックに false に設定する
(public member function)
(C++11) (C++11)
フラグをアトミックに true に設定し、以前の値を返す
(function)
(C++11)
指定されたアトミック操作に対するメモリ順序制約を定義する
(enum)