| /* |
| * Copyright (c) 2006, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 6404711 |
| * @summary Check capacity management |
| * @author Martin Buchholz |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| |
| public class StickySize { |
| static void equalClones(BitSet s, int expectedSize) { |
| equal(expectedSize, clone(s).size()); |
| equal(expectedSize, serialClone(s).size()); |
| equal(expectedSize, s.size()); |
| equal(clone(s), serialClone(s)); |
| } |
| |
| private static void realMain(String[] args) { |
| BitSet s; |
| |
| s = new BitSet(); // non-sticky |
| equal(s.size(), 64); |
| equalClones(s, 0); |
| s.set(3*64); |
| s.set(7*64); |
| equal(s.size(), 8*64); |
| equalClones(s, 8*64); |
| s.clear(7*64); |
| equal(s.size(), 8*64); |
| equalClones(s, 4*64); |
| |
| s = new BitSet(8*64); // sticky |
| equalClones(s, 8*64); |
| s.set(3*64); |
| s.set(7*64); |
| equalClones(s, 8*64); |
| s.clear(7*64); |
| equalClones(s, 8*64); |
| equalClones(clone(s), 8*64); |
| equalClones(serialClone(s), 8*64); |
| s.set(17*64); // Expand beyond sticky size |
| equalClones(s, 18*64); |
| s.clear(17*64); |
| equalClones(s, 4*64); |
| } |
| |
| static BitSet clone(BitSet s) { |
| return (BitSet) s.clone(); |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| static volatile int passed = 0, failed = 0; |
| static void pass() {passed++;} |
| static void fail() {failed++; Thread.dumpStack();} |
| static void fail(String msg) {System.out.println(msg); fail();} |
| static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| static void check(boolean cond) {if (cond) pass(); else fail();} |
| static void equal(Object x, Object y) { |
| if (x == null ? y == null : x.equals(y)) pass(); |
| else fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| static byte[] serializedForm(Object obj) { |
| try { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| new ObjectOutputStream(baos).writeObject(obj); |
| return baos.toByteArray(); |
| } catch (IOException e) { throw new RuntimeException(e); }} |
| static Object readObject(byte[] bytes) |
| throws IOException, ClassNotFoundException { |
| InputStream is = new ByteArrayInputStream(bytes); |
| return new ObjectInputStream(is).readObject();} |
| @SuppressWarnings("unchecked") |
| static <T> T serialClone(T obj) { |
| try { return (T) readObject(serializedForm(obj)); } |
| catch (Exception e) { throw new RuntimeException(e); }} |
| } |