std::barrier<CompletionFunction>::arrive
From cppreference.com
| arrival_token arrive( std::ptrdiff_t n = 1 ); |
(since C++20) | |
Constructs an arrival_token object associated with the phase synchronization point for the current phase. Then, decrements the expected count by n.
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.
Parameters
| n | - | the value by which the expected count is decreased |
Return value
The constructed arrival_token object.
Exceptions
Throws std::system_error with an error code allowed for mutex types on error.
Notes
This function can cause the completion step for the current phase to start.
Example
| This section is incomplete Reason: no example |
See also
| blocks at the phase synchronization point until its phase completion step is run (public member function) |