J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | * @bug 4776783 4778091 4778099 |
| 26 | * @summary Check various properties of key and selected-key sets |
| 27 | * |
| 28 | * @run main KeySets |
| 29 | * @run main/othervm -Dsun.nio.ch.bugLevel=1.4 KeySets |
| 30 | */ |
| 31 | |
| 32 | import java.io.*; |
| 33 | import java.nio.channels.*; |
| 34 | import java.util.*; |
| 35 | |
| 36 | |
| 37 | public class KeySets { |
| 38 | |
| 39 | static boolean compat; |
| 40 | |
| 41 | static abstract class Catch { |
| 42 | abstract void go() throws Exception; |
| 43 | Catch(Class xc) throws Exception { |
| 44 | try { |
| 45 | go(); |
| 46 | } catch (Exception x) { |
| 47 | if (compat) |
| 48 | throw new Exception("Exception thrown", x); |
| 49 | if (xc.isInstance(x)) |
| 50 | return; |
| 51 | throw new Exception("Wrong exception", x); |
| 52 | } |
| 53 | if (compat) |
| 54 | return; |
| 55 | throw new Exception("Not thrown as expected: " |
| 56 | + xc.getName()); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | // 4776783: Closing a selector should make key sets inaccessible |
| 61 | static void testClose() throws Exception { |
| 62 | |
| 63 | final Selector sel = Selector.open(); |
| 64 | sel.keys(); |
| 65 | sel.selectedKeys(); |
| 66 | sel.close(); |
| 67 | |
| 68 | new Catch(ClosedSelectorException.class) { |
| 69 | void go() throws Exception { |
| 70 | sel.keys(); |
| 71 | }}; |
| 72 | |
| 73 | new Catch(ClosedSelectorException.class) { |
| 74 | void go() throws Exception { |
| 75 | sel.selectedKeys(); |
| 76 | }}; |
| 77 | |
| 78 | } |
| 79 | |
| 80 | static void testNoAddition(final Set s) throws Exception { |
| 81 | new Catch(UnsupportedOperationException.class) { |
| 82 | void go() throws Exception { |
| 83 | s.add(new Object()); |
| 84 | }}; |
| 85 | new Catch(UnsupportedOperationException.class) { |
| 86 | void go() throws Exception { |
| 87 | ArrayList al = new ArrayList(); |
| 88 | al.add(new Object()); |
| 89 | s.addAll(al); |
| 90 | }}; |
| 91 | } |
| 92 | |
| 93 | static interface Adder { |
| 94 | void add() throws IOException; |
| 95 | } |
| 96 | |
| 97 | static void testNoRemoval(final Set s, final Adder adder) |
| 98 | throws Exception |
| 99 | { |
| 100 | new Catch(UnsupportedOperationException.class) { |
| 101 | void go() throws Exception { |
| 102 | adder.add(); |
| 103 | s.clear(); |
| 104 | }}; |
| 105 | new Catch(UnsupportedOperationException.class) { |
| 106 | void go() throws Exception { |
| 107 | adder.add(); |
| 108 | Iterator i = s.iterator(); |
| 109 | i.next(); |
| 110 | i.remove(); |
| 111 | }}; |
| 112 | new Catch(UnsupportedOperationException.class) { |
| 113 | void go() throws Exception { |
| 114 | adder.add(); |
| 115 | s.remove(s.iterator().next()); |
| 116 | }}; |
| 117 | new Catch(UnsupportedOperationException.class) { |
| 118 | void go() throws Exception { |
| 119 | adder.add(); |
| 120 | HashSet hs = new HashSet(); |
| 121 | hs.addAll(s); |
| 122 | s.removeAll(hs); |
| 123 | }}; |
| 124 | new Catch(UnsupportedOperationException.class) { |
| 125 | void go() throws Exception { |
| 126 | adder.add(); |
| 127 | s.retainAll(Collections.EMPTY_SET); |
| 128 | }}; |
| 129 | } |
| 130 | |
| 131 | static SelectionKey reg(Selector sel) throws IOException { |
| 132 | DatagramChannel dc = DatagramChannel.open(); |
| 133 | dc.configureBlocking(false); |
| 134 | return dc.register(sel, SelectionKey.OP_WRITE); |
| 135 | } |
| 136 | |
| 137 | static void testMutability() throws Exception { |
| 138 | |
| 139 | final Selector sel = Selector.open(); |
| 140 | |
| 141 | // 4778091: Selector.keys() should be immutable |
| 142 | |
| 143 | testNoRemoval(sel.keys(), new Adder() { |
| 144 | public void add() throws IOException { |
| 145 | reg(sel); |
| 146 | } |
| 147 | }); |
| 148 | testNoAddition(sel.keys()); |
| 149 | |
| 150 | // 4778099: Selector.selectedKeys() should allow removal but not addition |
| 151 | |
| 152 | sel.select(); |
| 153 | testNoAddition(sel.selectedKeys()); |
| 154 | SelectionKey sk = reg(sel); |
| 155 | sel.select(); |
| 156 | int n = sel.selectedKeys().size(); |
| 157 | sel.selectedKeys().remove(sk); |
| 158 | if (sel.selectedKeys().size() != n - 1) |
| 159 | throw new Exception("remove failed"); |
| 160 | |
| 161 | HashSet hs = new HashSet(); |
| 162 | hs.add(reg(sel)); |
| 163 | sel.select(); |
| 164 | sel.selectedKeys().retainAll(hs); |
| 165 | if (sel.selectedKeys().isEmpty()) |
| 166 | throw new Exception("retainAll failed"); |
| 167 | sel.selectedKeys().removeAll(hs); |
| 168 | if (!sel.selectedKeys().isEmpty()) |
| 169 | throw new Exception("removeAll failed"); |
| 170 | |
| 171 | hs.clear(); |
| 172 | hs.add(reg(sel)); |
| 173 | sel.select(); |
| 174 | sel.selectedKeys().clear(); |
| 175 | if (!sel.selectedKeys().isEmpty()) |
| 176 | throw new Exception("clear failed"); |
| 177 | |
| 178 | } |
| 179 | |
| 180 | public static void main(String[] args) throws Exception { |
| 181 | String bl = System.getProperty("sun.nio.ch.bugLevel"); |
| 182 | compat = (bl != null) && bl.equals("1.4"); |
| 183 | testClose(); |
| 184 | testMutability(); |
| 185 | } |
| 186 | |
| 187 | } |