SystemUtil.java

/**
 *                            License
 * THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS  
 * CREATIVE COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). 
 * THE WORK IS PROTECTED BY COPYRIGHT AND/OR OTHER APPLICABLE LAW.  
 * ANY USE OF THE WORK OTHER THAN AS AUTHORIZED UNDER THIS LICENSE OR  
 * COPYRIGHT LAW IS PROHIBITED.
 * 
 * BY EXERCISING ANY RIGHTS TO THE WORK PROVIDED HERE, YOU ACCEPT AND  
 * AGREE TO BE BOUND BY THE TERMS OF THIS LICENSE. TO THE EXTENT THIS LICENSE  
 * MAY BE CONSIDERED TO BE A CONTRACT, THE LICENSOR GRANTS YOU THE RIGHTS CONTAINED 
 * HERE IN CONSIDERATION OF YOUR ACCEPTANCE OF SUCH TERMS AND CONDITIONS.
 * 
 */
package l1j.server.server.utils;

import java.io.File;

public class SystemUtil {
	/**
	 * システムが利用中のヒープサイズをメガバイト単位で返す。<br>
	 * この値にスタックのサイズは含まれない。
	 * 
	 * @return 利用中のヒープサイズ
	 */
	public static long getUsedMemoryMB() {
		return ( Runtime.getRuntime().totalMemory() - 
				 Runtime.getRuntime().freeMemory()) / 1024L / 1024L;}

	/**
	 * 得知作業系統是幾位元 Only for Windows
	 * 
	 * @return x86 or x64
	 */
	public static String getOsArchitecture() {
		String x64_System = "C:\\Windows\\SysWOW64", result;
		File dir = new File(x64_System);
		if (dir.exists())
			result = "x64";
		else
			result = "x86";
		return result;
	}

	/**
	 * 取得目前的作業系統
	 * 
	 * @return Linux or Windows
	 */
	public static String gerOs() {
		String Os = "", OsName = System.getProperty("os.name");
		if (OsName.toLowerCase().indexOf("windows") >= 0) {
			Os = "Windows";
		} else if (OsName.toLowerCase().indexOf("linux") >= 0) {
			Os = "Linux";
		}
		return Os;
	}
}