1 /* 2 * Copyright (c) 2006, 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 6404711 27 * @summary Check capacity management 28 * @author Martin Buchholz 29 */ 30 31 import java.io.*; 32 import java.util.*; 33 34 public class StickySize { equalClones(BitSet s, int expectedSize)35 static void equalClones(BitSet s, int expectedSize) { 36 equal(expectedSize, clone(s).size()); 37 equal(expectedSize, serialClone(s).size()); 38 equal(expectedSize, s.size()); 39 equal(clone(s), serialClone(s)); 40 } 41 realMain(String[] args)42 private static void realMain(String[] args) { 43 BitSet s; 44 45 s = new BitSet(); // non-sticky 46 equal(s.size(), 64); 47 equalClones(s, 0); 48 s.set(3*64); 49 s.set(7*64); 50 equal(s.size(), 8*64); 51 equalClones(s, 8*64); 52 s.clear(7*64); 53 equal(s.size(), 8*64); 54 equalClones(s, 4*64); 55 56 s = new BitSet(8*64); // sticky 57 equalClones(s, 8*64); 58 s.set(3*64); 59 s.set(7*64); 60 equalClones(s, 8*64); 61 s.clear(7*64); 62 equalClones(s, 8*64); 63 equalClones(clone(s), 8*64); 64 equalClones(serialClone(s), 8*64); 65 s.set(17*64); // Expand beyond sticky size 66 equalClones(s, 18*64); 67 s.clear(17*64); 68 equalClones(s, 4*64); 69 } 70 clone(BitSet s)71 static BitSet clone(BitSet s) { 72 return (BitSet) s.clone(); 73 } 74 75 //--------------------- Infrastructure --------------------------- 76 static volatile int passed = 0, failed = 0; pass()77 static void pass() {passed++;} fail()78 static void fail() {failed++; Thread.dumpStack();} fail(String msg)79 static void fail(String msg) {System.out.println(msg); fail();} unexpected(Throwable t)80 static void unexpected(Throwable t) {failed++; t.printStackTrace();} check(boolean cond)81 static void check(boolean cond) {if (cond) pass(); else fail();} equal(Object x, Object y)82 static void equal(Object x, Object y) { 83 if (x == null ? y == null : x.equals(y)) pass(); 84 else fail(x + " not equal to " + y);} main(String[] args)85 public static void main(String[] args) throws Throwable { 86 try {realMain(args);} catch (Throwable t) {unexpected(t);} 87 System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); 88 if (failed > 0) throw new AssertionError("Some tests failed");} serializedForm(Object obj)89 static byte[] serializedForm(Object obj) { 90 try { 91 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 92 new ObjectOutputStream(baos).writeObject(obj); 93 return baos.toByteArray(); 94 } catch (IOException e) { throw new RuntimeException(e); }} readObject(byte[] bytes)95 static Object readObject(byte[] bytes) 96 throws IOException, ClassNotFoundException { 97 InputStream is = new ByteArrayInputStream(bytes); 98 return new ObjectInputStream(is).readObject();} 99 @SuppressWarnings("unchecked") serialClone(T obj)100 static <T> T serialClone(T obj) { 101 try { return (T) readObject(serializedForm(obj)); } 102 catch (Exception e) { throw new RuntimeException(e); }} 103 } 104