queue.php

См. документацию.

<?php

 
namespace Bitrix\Main\Web\Http;
 
use Bitrix\Main\Application;
 
abstract class Queue
{
    public function __construct()
    {
        // wait for promises if no one called wait()
        Application::getInstance()->addBackgroundJob([$this, 'wait'], [], Application::JOB_PRIORITY_LOW);
    }

    abstract public function wait(?Promise $targetPromise = null): array;
}