Icicle\Concurrent\Worker\AbstractWorker::enqueue PHP Метод

    public function enqueue(Task $task) : \Generator
    {
        if (!$this->context->isRunning()) {
            throw new StatusError('The worker has not been started.');
        }
        if ($this->shutdown) {
            throw new StatusError('The worker has been shut down.');
        }
        // If the worker is currently busy, store the task in a busy queue.
        if (null !== $this->active) {
            $delayed = new Delayed();
            $this->busyQueue->enqueue($delayed);
            (yield $delayed);
        }
        $this->active = new Coroutine($this->send($task));
        try {
            $result = (yield $this->active);
        } catch (\Throwable $exception) {
            $this->kill();
            throw new WorkerException('Sending the task to the worker failed.', $exception);
        } finally {
            $this->active = null;
        }
        // We're no longer busy at the moment, so dequeue a waiting task.
        if (!$this->busyQueue->isEmpty()) {
            $this->busyQueue->dequeue()->resolve();
        }
        if ($result instanceof TaskFailure) {
            throw $result->getException();
        }
        return $result;
    }