Yay generation uses async tasks

src/pocketmine/scheduler/AsyncTask.php

@@ -30,6 +30,9 @@ use pocketmine\Server;
  */
 abstract class AsyncTask extends \Collectable{
 
+	/** @var AsyncWorker $worker */
+	public $worker = null;
+
 	private $result = null;
 	private $serialized = false;
 	/** @var int */
@@ -83,6 +86,32 @@ abstract class AsyncTask extends \Collectable{
 		return $this->taskId;
 	}
 
+	/**
+	 * Gets something into the local thread store.
+	 * You have to initialize this in some way from the task on run
+	 *
+	 * @param string $identifier
+	 * @return mixed
+	 */
+	public function getFromThreadStore($identifier){
+		global $store;
+		return $this->isGarbage() ? null : $store[$identifier];
+	}
+
+	/**
+	 * Saves something into the local thread store.
+	 * This might get deleted at any moment.
+	 *
+	 * @param string $identifier
+	 * @param mixed  $value
+	 */
+	public function saveToThreadStore($identifier, $value){
+		global $store;
+		if(!$this->isGarbage()){
+			$store[$identifier] = $value;
+		}
+	}
+
 	/**
 	 * Actions to execute when run
 	 *