Defined in header <atomic> | ||
|---|---|---|
| (since C++20) | ||
void atomic_flag_notify_all( std::atomic_flag* object ) noexcept; | ||
void atomic_flag_notify_all( volatile std::atomic_flag* object ) 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().
| object | - | pointer to the atomic_flag object to notify |
(none).
This form of change-detection is often more efficient than simple polling or pure spinlocks.
|
(C++20) | notifies at least one thread waiting on the atomic object (public member function of std::atomic_flag) |
|
(C++20) | notifies all threads blocked waiting on the atomic object (public member function of std::atomic_flag) |
|
(C++20)(C++20) | blocks the thread until notified and the flag changes (function) |
|
(C++20) | notifies a thread blocked in atomic_flag_wait (function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/atomic/atomic_flag_notify_all