| /* |
| * Copyright (c) 2002, 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. |
| */ |
| |
| import java.io.*; |
| import java.nio.channels.*; |
| import java.util.*; |
| |
| class ClosedChannelList { |
| |
| static final long TIMEOUT = 10 * 1000; /* 10 sec */ |
| |
| static class Element { |
| long expiry; |
| SelectionKey key; |
| Element (long l, SelectionKey key) { |
| expiry = l; |
| this.key = key; |
| } |
| } |
| |
| LinkedList list; |
| |
| public ClosedChannelList () { |
| list = new LinkedList (); |
| } |
| |
| /* close chan after TIMEOUT milliseconds */ |
| |
| public synchronized void add (SelectionKey key) { |
| long exp = System.currentTimeMillis () + TIMEOUT; |
| list.add (new Element (exp, key)); |
| } |
| |
| public synchronized void check () { |
| check (false); |
| } |
| |
| public synchronized void terminate () { |
| check (true); |
| } |
| |
| public synchronized void check (boolean forceClose) { |
| Iterator iter = list.iterator (); |
| long now = System.currentTimeMillis(); |
| while (iter.hasNext ()) { |
| Element elm = (Element)iter.next(); |
| if (forceClose || elm.expiry <= now) { |
| SelectionKey k = elm.key; |
| try { |
| k.channel().close (); |
| } catch (IOException e) {} |
| k.cancel(); |
| iter.remove(); |
| } |
| } |
| } |
| } |