Removed pocketmine subdirectory, map PSR-4 style

src/utils/Process.php

@@ -0,0 +1,171 @@
+<?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\ThreadManager;
+use function count;
+use function exec;
+use function fclose;
+use function file;
+use function file_get_contents;
+use function function_exists;
+use function hexdec;
+use function memory_get_usage;
+use function preg_match;
+use function proc_close;
+use function proc_open;
+use function stream_get_contents;
+use function strpos;
+use function trim;
+
+final class Process{
+
+	private function __construct(){
+		//NOOP
+	}
+
+	/**
+	 * @param bool $advanced
+	 *
+	 * @return int[]|int
+	 */
+	public static function getMemoryUsage(bool $advanced = false){
+		$reserved = memory_get_usage();
+		$VmSize = null;
+		$VmRSS = null;
+		if(Utils::getOS() === "linux" or Utils::getOS() === "android"){
+			$status = file_get_contents("/proc/self/status");
+			if(preg_match("/VmRSS:[ \t]+([0-9]+) kB/", $status, $matches) > 0){
+				$VmRSS = $matches[1] * 1024;
+			}
+
+			if(preg_match("/VmSize:[ \t]+([0-9]+) kB/", $status, $matches) > 0){
+				$VmSize = $matches[1] * 1024;
+			}
+		}
+
+		//TODO: more OS
+
+		if($VmRSS === null){
+			$VmRSS = memory_get_usage();
+		}
+
+		if(!$advanced){
+			return $VmRSS;
+		}
+
+		if($VmSize === null){
+			$VmSize = memory_get_usage(true);
+		}
+
+		return [$reserved, $VmRSS, $VmSize];
+	}
+
+	/**
+	 * @return int[]
+	 */
+	public static function getRealMemoryUsage() : array{
+		$stack = 0;
+		$heap = 0;
+
+		if(Utils::getOS() === "linux" or Utils::getOS() === "android"){
+			$mappings = file("/proc/self/maps");
+			foreach($mappings as $line){
+				if(preg_match("#([a-z0-9]+)\\-([a-z0-9]+) [rwxp\\-]{4} [a-z0-9]+ [^\\[]*\\[([a-zA-z0-9]+)\\]#", trim($line), $matches) > 0){
+					if(strpos($matches[3], "heap") === 0){
+						$heap += hexdec($matches[2]) - hexdec($matches[1]);
+					}elseif(strpos($matches[3], "stack") === 0){
+						$stack += hexdec($matches[2]) - hexdec($matches[1]);
+					}
+				}
+			}
+		}
+
+		return [$heap, $stack];
+	}
+
+
+	public static function getThreadCount() : int{
+		if(Utils::getOS() === "linux" or Utils::getOS() === "android"){
+			if(preg_match("/Threads:[ \t]+([0-9]+)/", file_get_contents("/proc/self/status"), $matches) > 0){
+				return (int) $matches[1];
+			}
+		}
+
+		//TODO: more OS
+
+		return count(ThreadManager::getInstance()->getAll()) + 3; //RakLib + MainLogger + Main Thread
+	}
+
+	public static function kill($pid) : void{
+		$logger = \GlobalLogger::get();
+		if($logger instanceof MainLogger){
+			$logger->syncFlushBuffer();
+		}
+		switch(Utils::getOS()){
+			case "win":
+				exec("taskkill.exe /F /PID " . ((int) $pid) . " > NUL");
+				break;
+			case "mac":
+			case "linux":
+			default:
+				if(function_exists("posix_kill")){
+					posix_kill($pid, 9); //SIGKILL
+				}else{
+					exec("kill -9 " . ((int) $pid) . " > /dev/null 2>&1");
+				}
+		}
+	}
+
+	/**
+	 * @param string      $command Command to execute
+	 * @param string|null &$stdout Reference parameter to write stdout to
+	 * @param string|null &$stderr Reference parameter to write stderr to
+	 *
+	 * @return int process exit code
+	 */
+	public static function execute(string $command, string &$stdout = null, string &$stderr = null) : int{
+		$process = proc_open($command, [
+			["pipe", "r"],
+			["pipe", "w"],
+			["pipe", "w"]
+		], $pipes);
+
+		if($process === false){
+			$stderr = "Failed to open process";
+			$stdout = "";
+
+			return -1;
+		}
+
+		$stdout = stream_get_contents($pipes[1]);
+		$stderr = stream_get_contents($pipes[2]);
+
+		foreach($pipes as $p){
+			fclose($p);
+		}
+
+		return proc_close($process);
+	}
+}