Available on macro
Barriers.
See also:
https://aantron.github.io/luv/luv/Luv/Barrier
@:noExprstaticdestroy(this:Barrier):Void
Cleans up a barrier.
@:noExprstaticinit(count:Int):Result<Barrier>
Allocates and initializes a barrier.
@:noExprstaticwait(this:Barrier):Bool
Waits on a barrier.