[[nodiscard]] arrival_token arrive( std::ptrdiff_t n = 1 );
arrival_token object associated with the phase synchronization point for the current phase. Then, decrements the expected count by
This function executes atomically. The call to this function strongly happens-before the start of the phase completion step for the current phase.
The behavior is undefined if
n is less than or equal to 0 or greater than the expected count for the current barrier phase.
|n||-||the value by which the expected count is decreased|
std::system_error with an error code allowed for mutex types on error.
This function can cause the completion step for the current phase to start.
| blocks at the phase synchronization point until its phase completion step is run
(public member function)
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