std::latch::count_down
void count_down( std::ptrdiff_t n = 1 ); |
(since C++20) |
Atomically decrements the internal counter by n without blocking the caller.
If n is greater than the value of the internal counter or is negative, the behavior is undefined.
This operation strongly happens-before all calls that are unblocked on this latch.
Parameters
| n | - | the value by which the internal counter is decreased |
Return value
(none).
Exceptions
Throws std::system_error with an error code allowed for mutex types on error.
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