/**
* {@inheritDoc}
*/
public function read()
{
$reader = new Awaitable();
$this->readersQueue->enqueue($reader);
if ($this->buffer) {
while (!$this->buffer->isReadable()) {
(yield $reader->await());
}
$this->readersQueue->dequeue();
$this->notifyAwaiting($this->writersQueue);
return $this->buffer->read()->content();
}
while ($this->messageQueue->count() <= $this->indexOf($reader, $this->readersQueue)) {
(yield $reader->await());
}
$index = $this->indexOf($reader, $this->readersQueue);
$msg = $this->messageQueue->offsetGet($index);
$this->readersQueue->offsetUnset($index);
$this->messageQueue->offsetUnset($index);
$this->notifyAwaiting($this->readersQueue);
$this->notifyAwaiting($this->writersQueue);
return $msg->content();
}