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std::latch:: latch

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std::latch
constexpr explicit latch ( std:: ptrdiff_t expected ) ;
(1) (C++20 이후)
latch ( const latch & ) = delete ;
(2) (C++20 이후)
1) latch 를 생성하고 내부 카운터를 초기화합니다. expected 값이 음수이거나 max() 보다 큰 경우의 동작은 정의되지 않습니다.
2) 복사 생성자가 삭제되었습니다. latch 는 복사 가능하지도 이동 가능하지도 않습니다.

매개변수

expected - 내부 카운터의 초기값

예외

아무것도 던지지 않습니다.