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      std::barrier<CompletionFunction>::arrive

      From cppreference.com
      <cpp‎ |thread‎ |barrier
       
       
      Concurrency support library
      Threads
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      (C++20)
      this_thread namespace
      (C++11)
      (C++11)
      (C++11)
      Cooperative cancellation
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      (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)
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      Safe reclamation
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      Memory ordering
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      arrival_token arrive(std::ptrdiff_t n=1);
      (since C++20)

      Constructs anarrival_token object associated with the phase synchronization point for the current phase. Then, decrements the expected count byn.

      This function executes atomically. The call to this functionstrongly happens-before the start of the phase completion step for the current phase.

      The behavior is undefined ifn is less than or equal to 0 or greater than the expected count for the current barrier phase.

      Contents

      [edit]Parameters

      n - the value by which the expected count is decreased

      [edit]Return value

      The constructedarrival_token object.

      [edit]Exceptions

      Throwsstd::system_error with an error code allowed for mutex types on error.

      [edit]Notes

      This function can cause the completion step for the current phase to start.

      [edit]Example

      This section is incomplete
      Reason: no example

      [edit]See also

      blocks at the phase synchronization point until its phase completion step is run
      (public member function)[edit]
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/thread/barrier/arrive&oldid=173032"

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