Removed pocketmine subdirectory, map PSR-4 style

src/utils/ServerKiller.php

@@ -0,0 +1,65 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\utils;
+
+use pocketmine\thread\Thread;
+use function getmypid;
+use function time;
+
+class ServerKiller extends Thread{
+
+	public $time;
+
+	/** @var bool */
+	private $stopped = false;
+
+	public function __construct($time = 15){
+		$this->time = $time;
+	}
+
+	protected function onRun() : void{
+		$start = time();
+		$this->synchronized(function(){
+			if(!$this->stopped){
+				$this->wait($this->time * 1000000);
+			}
+		});
+		if(time() - $start >= $this->time){
+			echo "\nTook too long to stop, server was killed forcefully!\n";
+			@Process::kill(getmypid());
+		}
+	}
+
+	public function quit() : void{
+		$this->synchronized(function() : void{
+			$this->stopped = true;
+			$this->notify();
+		});
+		parent::quit();
+	}
+
+	public function getThreadName() : string{
+		return "Server Killer";
+	}
+}