| /* |
| * Copyright (c) 2003, 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 4776783 4778091 4778099 |
| * @summary Check various properties of key and selected-key sets |
| * |
| * @run main KeySets |
| * @run main/othervm -Dsun.nio.ch.bugLevel=1.4 KeySets |
| */ |
| |
| import java.io.*; |
| import java.nio.channels.*; |
| import java.util.*; |
| |
| |
| public class KeySets { |
| |
| static boolean compat; |
| |
| static abstract class Catch { |
| abstract void go() throws Exception; |
| Catch(Class xc) throws Exception { |
| try { |
| go(); |
| } catch (Exception x) { |
| if (compat) |
| throw new Exception("Exception thrown", x); |
| if (xc.isInstance(x)) |
| return; |
| throw new Exception("Wrong exception", x); |
| } |
| if (compat) |
| return; |
| throw new Exception("Not thrown as expected: " |
| + xc.getName()); |
| } |
| } |
| |
| // 4776783: Closing a selector should make key sets inaccessible |
| static void testClose() throws Exception { |
| |
| final Selector sel = Selector.open(); |
| sel.keys(); |
| sel.selectedKeys(); |
| sel.close(); |
| |
| new Catch(ClosedSelectorException.class) { |
| void go() throws Exception { |
| sel.keys(); |
| }}; |
| |
| new Catch(ClosedSelectorException.class) { |
| void go() throws Exception { |
| sel.selectedKeys(); |
| }}; |
| |
| } |
| |
| static void testNoAddition(final Set s) throws Exception { |
| new Catch(UnsupportedOperationException.class) { |
| void go() throws Exception { |
| s.add(new Object()); |
| }}; |
| new Catch(UnsupportedOperationException.class) { |
| void go() throws Exception { |
| ArrayList al = new ArrayList(); |
| al.add(new Object()); |
| s.addAll(al); |
| }}; |
| } |
| |
| static interface Adder { |
| void add() throws IOException; |
| } |
| |
| static void testNoRemoval(final Set s, final Adder adder) |
| throws Exception |
| { |
| new Catch(UnsupportedOperationException.class) { |
| void go() throws Exception { |
| adder.add(); |
| s.clear(); |
| }}; |
| new Catch(UnsupportedOperationException.class) { |
| void go() throws Exception { |
| adder.add(); |
| Iterator i = s.iterator(); |
| i.next(); |
| i.remove(); |
| }}; |
| new Catch(UnsupportedOperationException.class) { |
| void go() throws Exception { |
| adder.add(); |
| s.remove(s.iterator().next()); |
| }}; |
| new Catch(UnsupportedOperationException.class) { |
| void go() throws Exception { |
| adder.add(); |
| HashSet hs = new HashSet(); |
| hs.addAll(s); |
| s.removeAll(hs); |
| }}; |
| new Catch(UnsupportedOperationException.class) { |
| void go() throws Exception { |
| adder.add(); |
| s.retainAll(Collections.EMPTY_SET); |
| }}; |
| } |
| |
| static SelectionKey reg(Selector sel) throws IOException { |
| DatagramChannel dc = DatagramChannel.open(); |
| dc.configureBlocking(false); |
| return dc.register(sel, SelectionKey.OP_WRITE); |
| } |
| |
| static void testMutability() throws Exception { |
| |
| final Selector sel = Selector.open(); |
| |
| // 4778091: Selector.keys() should be immutable |
| |
| testNoRemoval(sel.keys(), new Adder() { |
| public void add() throws IOException { |
| reg(sel); |
| } |
| }); |
| testNoAddition(sel.keys()); |
| |
| // 4778099: Selector.selectedKeys() should allow removal but not addition |
| |
| sel.select(); |
| testNoAddition(sel.selectedKeys()); |
| SelectionKey sk = reg(sel); |
| sel.select(); |
| int n = sel.selectedKeys().size(); |
| sel.selectedKeys().remove(sk); |
| if (sel.selectedKeys().size() != n - 1) |
| throw new Exception("remove failed"); |
| |
| HashSet hs = new HashSet(); |
| hs.add(reg(sel)); |
| sel.select(); |
| sel.selectedKeys().retainAll(hs); |
| if (sel.selectedKeys().isEmpty()) |
| throw new Exception("retainAll failed"); |
| sel.selectedKeys().removeAll(hs); |
| if (!sel.selectedKeys().isEmpty()) |
| throw new Exception("removeAll failed"); |
| |
| hs.clear(); |
| hs.add(reg(sel)); |
| sel.select(); |
| sel.selectedKeys().clear(); |
| if (!sel.selectedKeys().isEmpty()) |
| throw new Exception("clear failed"); |
| |
| } |
| |
| public static void main(String[] args) throws Exception { |
| String bl = System.getProperty("sun.nio.ch.bugLevel"); |
| compat = (bl != null) && bl.equals("1.4"); |
| testClose(); |
| testMutability(); |
| } |
| |
| } |