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      std::atomic_notify_all

      From cppreference.com
      <cpp‎ |atomic
       
       
      Concurrency support library
      Threads
      (C++11)
      (C++20)
      this_thread namespace
      (C++11)
      (C++11)
      (C++11)
      Cooperative cancellation
      Mutual exclusion
      Generic lock management
      (C++11)
      (C++11)
      (C++11)
      (C++11)
      Condition variables
      (C++11)
      Semaphores
      Latches and Barriers
      (C++20)
      (C++20)
      Futures
      (C++11)
      (C++11)
      (C++11)
      Safe reclamation
      Hazard pointers
      Atomic types
      (C++11)
      (C++20)
      Initialization of atomic types
      (C++11)(deprecated in C++20)
      (C++11)(deprecated in C++20)
      Memory ordering
      (C++11)(deprecated in C++26)
      Free functions for atomic operations
      atomic_notify_all
      (C++20)
      Free functions for atomic flags
       
      Defined in header<atomic>
      template<class T>
      void atomic_notify_all(std::atomic<T>* object);
      (1)(since C++20)
      template<class T>
      void atomic_notify_all(volatilestd::atomic<T>* object);
      (2)(since C++20)

      Performs atomic notifying operations.

      Unblocks all threads blocked in atomic waiting operations (i.e.std::atomic_wait(),std::atomic_wait_explicit(), orstd::atomic::wait()) on*object, if there are any; otherwise does nothing.

      Equivalent toobject->notify_all().

      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

      This section is incomplete
      Reason: no example

      [edit]See also

      (C++20)
      notifies at least one thread waiting on the atomic object
      (public member function ofstd::atomic<T>)[edit]
      (C++20)
      notifies all threads blocked waiting on the atomic object
      (public member function ofstd::atomic<T>)[edit]
      blocks the thread until notified and the atomic value changes
      (function template)[edit]
      notifies a thread blocked in atomic_wait
      (function template)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/atomic/atomic_notify_all&oldid=159549"

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