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 }