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std::atomic...g_notify_all(3) C++ Standard Libarystd::atomic...g_notify_all(3)

NAME
       std::atomic_flag_notify_all - std::atomic_flag_notify_all

Synopsis
	  Defined in header <atomic>
	  void atomic_flag_notify_all( std::atomic_flag* object	) noexcept;
	  void	atomic_flag_notify_all(	 volatile  std::atomic_flag*  object )
       (since C++20)
	  noexcept;

	  Performs atomic notifying operations.

	  Unblocks all threads blocked in atomic waiting operations (i.e.
	  std::atomic_flag_wait(), std::atomic_flag_wait_explicit(), or
	  std::atomic_flag::wait()) on *object,	if there  are  any;  otherwise
       does nothing.

	  Equivalent to	object->notify_all().

Parameters
	  object - pointer to the atomic_flag object to	notify

Return value
	  (none)

Notes
	  This	form  of  change-detection is often more efficient than	simple
       polling or pure
	  spinlocks.

Example
	   This	section	is incomplete
	   Reason: no example

See also
	  notify_one		    notifies at	least one  thread  waiting  on
       the atomic object
	  (C++20)			(public	    member     function	    of
       std::atomic_flag)
	  notify_all		    notifies all threads  blocked  waiting  on
       the atomic object
	  (C++20)			(public	    member     function	    of
       std::atomic_flag)
	  atomic_flag_wait
	  atomic_flag_wait_explicit blocks the thread until notified  and  the
       flag changes
	  (C++20)		    (function)
	  (C++20)
	  atomic_flag_notify_one       notifies	   a	thread	  blocked   in
       atomic_flag_wait
	  (C++20)		    (function)

http://cppreference.com		  2022.07.31	 std::atomic...g_notify_all(3)

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