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std::atomic_flag_notify_all

From cppreference.com
< cpp‎ | atomic
 
 
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atomic_flag_notify_all
(C++20)
 
Defined in header <atomic>
void atomic_flag_notify_all( std::atomic_flag* object ) noexcept;
(1) (since C++20)
void atomic_flag_notify_all( volatile std::atomic_flag* object ) noexcept;
(2) (since C++20)

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().

Contents

[edit] Parameters

object - pointer to the atomic_flag 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_flag) [edit]
notifies all threads blocked waiting on the atomic object
(public member function of std::atomic_flag) [edit]
blocks the thread until notified and the flag changes
(function) [edit]
notifies a thread blocked in atomic_flag_wait
(function) [edit]