pidDeferred = new Deferred; $this->joinDeferred = new Deferred; $this->originalParentPid = \getmypid(); } /** @var Deferred */ public $joinDeferred; /** @var resource */ public $proc; /** @var resource */ public $extraDataPipe; /** @var string */ public $extraDataPipeWatcher; /** @var string */ public $extraDataPipeStartWatcher; /** @var int */ public $originalParentPid; }