std::atomic_ref<T>::notify_all

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< cpp‎ | atomic‎ | atomic ref

 
 
Concurrency support library
Threads
(C++11)
(C++20)
(C++20)
this_thread namespace
(C++11)
(C++11)
(C++11)
Atomic types
(C++11)
(C++20)
Initialization of atomic types
(C++11)(deprecated in C++20)
(C++11)(deprecated in C++20)
Free functions for atomic operations
Free functions for atomic flags
Memory ordering
Mutual exclusion
(C++11)
Generic lock management
(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
(C++11)
(C++11)
Condition variables
(C++11)
Semaphores
Latches and barriers
(C++20)
(C++20)
Futures
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(C++11)
 
 
(since C++20)
void notify_all() const noexcept;
void notify_all() const volatile noexcept;

Performs atomic notifying operations.

Unblocks all threads blocked in atomic waiting operations (i.e. wait()) on *this, if there are any; otherwise does nothing.

Return value

(none)

Notes

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

Example

See also

(C++20)
blocks the thread until notified and the atomic value changes
(public member function)
blocks the thread until notified and the atomic value changes
(function template)
notifies a thread blocked in atomic_wait
(function template)