1 /* 2 * Copyright (c) 2016, 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 * @test 26 * @bug 8149330 27 * @summary Capacity should not get close to Integer.MAX_VALUE unless 28 * necessary 29 * @run main/othervm -Xmx5G HugeCapacity 30 * @ignore This test has huge memory requirements 31 */ 32 33 public class HugeCapacity { 34 private static int failures = 0; 35 36 public static void main(String[] args) { 37 testLatin1(); 38 testUtf16(); 39 if (failures > 0) { 40 throw new RuntimeException(failures + " tests failed"); 41 } 42 } 43 44 private static void testLatin1() { 45 try { 46 StringBuilder sb = new StringBuilder(); 47 sb.ensureCapacity(Integer.MAX_VALUE / 2); 48 sb.ensureCapacity(Integer.MAX_VALUE / 2 + 1); 49 } catch (OutOfMemoryError oom) { 50 oom.printStackTrace(); 51 failures++; 52 } 53 } 54 55 private static void testUtf16() { 56 try { 57 StringBuilder sb = new StringBuilder(); 58 sb.append('\u042b'); 59 sb.ensureCapacity(Integer.MAX_VALUE / 4); 60 sb.ensureCapacity(Integer.MAX_VALUE / 4 + 1); 61 } catch (OutOfMemoryError oom) { 62 oom.printStackTrace(); 63 failures++; 64 } 65 } 66 }