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std::atomic_notify_one

From cppreference.com
< cpp‎ | atomic
 
 
 
Defined in header <atomic>
(since C++20)
template< class T >
void atomic_notify_one( std::atomic<T>* object );
template< class T >
void atomic_notify_one( volatile std::atomic<T>* object );

Performs atomic notifying operations.

If there is a thread blocked in atomic waiting operation (i.e. std::atomic_wait(), std::atomic_wait_explicit(), or std::atomic::wait()) on *object, then unblocks at least one such therad; otherwise does nothing.

Equivalent to object->notify_one().

Contents

[edit] Parameters

object - pointer to the atomic object to notify

[edit] Return value

(none)

[edit] Notes

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

[edit] Example

[edit] See also

notifies at least one thread waiting on the atomic object
(public member function of std::atomic<T>) [edit]
notifies all threads blocked waiting on the atomic object
(public member function of std::atomic<T>) [edit]
notifies all threads blocked in atomic_wait
(function template) [edit]
blocks the thread until notified and the atomic value changes
(function template) [edit]