| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.lang.ClassLoader; |
| |
| public class TriggerResize extends ClassLoader |
| { |
| static private int[] DATA = // bytes for "class TestCase00000 {}" |
| { |
| -54, -2, -70, -66, 0, 0, 0, 52, 0, 13, // 0 |
| 10, 0, 3, 0, 10, 7, 0, 11, 7, 0, // 10 |
| 12, 1, 0, 6, 60, 105, 110, 105, 116, 62, // 20 |
| 1, 0, 3, 40, 41, 86, 1, 0, 4, 67, // 30 |
| 111, 100, 101, 1, 0, 15, 76, 105, 110, 101, // 40 |
| 78, 117, 109, 98, 101, 114, 84, 97, 98, 108, // 50 |
| 101, 1, 0, 10, 83, 111, 117, 114, 99, 101, // 60 |
| 70, 105, 108, 101, 1, 0, 18, 84, 101, 115, // 70 |
| 116, 67, 97, 115, 101, 48, 48, 48, 48, 48, // 80 |
| 46, 106, 97, 118, 97, 12, 0, 4, 0, 5, // 90 |
| 1, 0, 13, 84, 101, 115, 116, 67, 97, 115, // 100 |
| 101, 48, 48, 48, 48, 48, 1, 0, 16, 106, // 110 |
| 97, 118, 97, 47, 108, 97, 110, 103, 47, 79, // 120 |
| 98, 106, 101, 99, 116, 0, 32, 0, 2, 0, // 130 |
| 3, 0, 0, 0, 0, 0, 1, 0, 0, 0, // 140 |
| 4, 0, 5, 0, 1, 0, 6, 0, 0, 0, // 150 |
| 29, 0, 1, 0, 1, 0, 0, 0, 5, 42, // 160 |
| -73, 0, 1, -79, 0, 0, 0, 1, 0, 7, // 170 |
| 0, 0, 0, 6, 0, 1, 0, 0, 0, 1, // 180 |
| 0, 1, 0, 8, 0, 0, 0, 2, 0, 9 // 190 |
| }; |
| |
| static private int INDEX1 = 85; |
| static private int INDEX2 = 111; |
| static private int BASE = 48; |
| |
| public TriggerResize() |
| { |
| super(); |
| } |
| |
| public void load(int index) |
| { |
| byte[] bytes = new byte[TriggerResize.DATA.length]; |
| for (int i=0; i<bytes.length; i++) |
| { |
| bytes[i] = (byte)TriggerResize.DATA[i]; |
| } |
| |
| // replace id "00000" in TestCase00000 to generate new class on the fly |
| { |
| int byte1 = index % 10; |
| int byte2 = index / 10 % 10; |
| int byte3 = index / 100 % 10; |
| int byte4 = index / 1000 % 10; |
| int byte5 = index / 10000 % 10; |
| |
| bytes[INDEX1+0] = bytes[INDEX2+0] = (byte)(BASE+byte5); |
| bytes[INDEX1+1] = bytes[INDEX2+1] = (byte)(BASE+byte4); |
| bytes[INDEX1+2] = bytes[INDEX2+2] = (byte)(BASE+byte3); |
| bytes[INDEX1+3] = bytes[INDEX2+3] = (byte)(BASE+byte2); |
| bytes[INDEX1+4] = bytes[INDEX2+4] = (byte)(BASE+byte1); |
| } |
| |
| Class generatedClass = defineClass(bytes, 0, bytes.length); |
| resolveClass(generatedClass); |
| } |
| |
| public static void main(String args[]) throws Exception |
| { |
| int count = 0; |
| if (args.length >= 1) { |
| Integer i = new Integer(args[0]); |
| count = i.intValue(); |
| } |
| |
| TriggerResize test = new TriggerResize(); |
| for (int i = 0; i <= count; i++) |
| { |
| test.load(i); |
| } |
| |
| // trigger safepoint to resize the SystemDictionary if needed |
| System.gc(); |
| } |
| } |