1 /* 2 * Copyright (c) 2019, 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 package cdsutils; 26 27 import java.io.BufferedReader; 28 import java.io.File; 29 import java.io.FileReader; 30 31 /** 32 * This class is used to simulate -Xshare:dump with -XX:ArchiveClassesAtExit. 33 * It loads all classes specified in a classlist file. See patchJarForDynamicDump() 34 * in ../TestCommon.java for details. 35 */ 36 public class DynamicDumpHelper { 37 public static void main(String args[]) throws Throwable { 38 File file = new File(args[0]); 39 40 System.out.println("Loading classes to share..."); 41 try (BufferedReader br = new BufferedReader(new FileReader(file))) { 42 String line; 43 while ((line = br.readLine()) != null) { 44 //System.out.println("Loading class: " + line); 45 line = line.replace('/', '.'); 46 try { 47 Class.forName(line); 48 } catch (java.lang.ClassNotFoundException ex) { 49 try { 50 Class.forName(line, true, null); 51 } catch (java.lang.ClassNotFoundException cnfe) { 52 System.out.println("Preload Warning: Cannot find " + line.replace('.', '/')); 53 } 54 } catch (Throwable t) { 55 System.out.println("Error: failed to load \"" + line + "\": " + t); 56 } 57 } 58 } 59 System.out.println("Loading classes to share: done."); 60 } 61 }