private function coreLoop()
{
for ($i = $this->processManager->getChildrenCount(); $i < $this->maxWorkers; $i++) {
$this->onWorkerAvailable();
}
do {
$this->loop();
pcntl_signal_dispatch();
if ($this->autoRestartInterval && microtime(true) - $this->startTime >= $this->autoRestartInterval) {
$this->restart();
}
$this->refreshLock();
} while ($this->isRunning);
}