NAME

std::experimental::latch::count_down - std::experimental::latch::count_down

Synopsis

void count_down( ptrdiff_t n = 1); (1) (concurrency TS)

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 synchronizes with all calls that block on this latch and all is_ready
calls on this latch that returns true.

Parameters

n - the value by which the internal counter is decreased

Return value

(none)

Exceptions

Throws nothing.