std::atomic_flag::notify_all

void notify_all() noexcept;	(1)	(since C++20) (constexpr since C++26)
void notify_all() volatile noexcept;	(2)	(since C++20)

Performs atomic notifying operations.

Unblocks all threads blocked in atomic waiting operations (i.e. wait()) on *this

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

wait (C++20)	blocks the thread until notified and the atomic value changes (public member function)
atomic_flag_waitatomic_flag_wait_explicit (C++20)(C++20)	blocks the thread until notified and the flag changes (function)
atomic_flag_notify_one (C++20)	notifies a thread blocked in atomic_flag_wait (function)