1/* 2 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * 26 */ 27 28package bench.rmi; 29 30import bench.Benchmark; 31import java.rmi.server.RMIClassLoader; 32import java.security.CodeSource; 33 34/** 35 * Benchmark for testing speed of repeated loading of a class not found in 36 * classpath. 37 */ 38public class ClassLoading implements Benchmark { 39 40 static final String ALTROOT = "!/bench/rmi/altroot/"; 41 static final String CLASSNAME = "Node"; 42 43 /** 44 * Repeatedly load a class not found in classpath through RMIClassLoader. 45 * Arguments: <# reps> 46 */ 47 public long run(String[] args) throws Exception { 48 int reps = Integer.parseInt(args[0]); 49 CodeSource csrc = getClass().getProtectionDomain().getCodeSource(); 50 String url = "jar:" + csrc.getLocation().toString() + ALTROOT; 51 52 long start = System.currentTimeMillis(); 53 for (int i = 0; i < reps; i++) 54 RMIClassLoader.loadClass(url, CLASSNAME); 55 long time = System.currentTimeMillis() - start; 56 57 return time; 58 } 59} 60