WP_Background_Process::handle_cron_healthcheck PHP Method

        public function handle_cron_healthcheck()
        {
            if ($this->is_process_running()) {
                // Background process already running.
                exit;
            }
            if ($this->is_queue_empty()) {
                // No data to process.
                $this->clear_scheduled_event();
                exit;
            }
            $this->handle();
            exit;
        }