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std::latch:: wait

From cppreference.net
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std::latch
void wait ( ) const ;
(since C++20)

Blocks the calling thread until the internal counter reaches ​ 0 ​ . If it is zero already, returns immediately.

Parameters

(none)

Return value

(none)

Exceptions

Throws std::system_error with an error code allowed for mutex types on error.