pub fn start_descendant_monitor(
root_pid: u32,
stop: Arc<DescendantMonitorStop>,
emit: Box<dyn Fn(DescendantEvent) + Send>,
) -> Result<()>pub fn start_descendant_monitor(
root_pid: u32,
stop: Arc<DescendantMonitorStop>,
emit: Box<dyn Fn(DescendantEvent) + Send>,
) -> Result<()>