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std::latch:...ive_and_wait(3) C++ Standard Libarystd::latch:...ive_and_wait(3)

NAME
       std::latch::arrive_and_wait - std::latch::arrive_and_wait

Synopsis
	  void arrive_and_wait(	std::ptrdiff_t n = 1 );	 (since	C++20)

	  Atomically  decrements  the internal counter by n and	(if necessary)
       blocks the
	  calling  thread  until  the  counter	reaches	 zero.	Equivalent  to
       count_down(n); wait();.

	  If  n	 is greater than the value of the internal counter or is nega-
       tive, the behavior
	  is undefined.

Parameters
	  n - the value	by which the internal counter is decreased

Return value
	  (none)

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

http://cppreference.com		  2022.07.31	 std::latch:...ive_and_wait(3)

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