J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2004 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.nio.ch; |
| 27 | |
| 28 | import java.io.IOException; |
| 29 | import java.nio.channels.*; |
| 30 | import java.nio.channels.spi.*; |
| 31 | |
| 32 | |
| 33 | /** |
| 34 | * An implementation of SelectionKey for Solaris. |
| 35 | */ |
| 36 | |
| 37 | class SelectionKeyImpl |
| 38 | extends AbstractSelectionKey |
| 39 | { |
| 40 | |
| 41 | final SelChImpl channel; // package-private |
| 42 | final SelectorImpl selector; // package-private |
| 43 | |
| 44 | // Index for a pollfd array in Selector that this key is registered with |
| 45 | private int index; |
| 46 | |
| 47 | private volatile int interestOps; |
| 48 | private int readyOps; |
| 49 | |
| 50 | SelectionKeyImpl(SelChImpl ch, SelectorImpl sel) { |
| 51 | channel = ch; |
| 52 | selector = sel; |
| 53 | } |
| 54 | |
| 55 | public SelectableChannel channel() { |
| 56 | return (SelectableChannel)channel; |
| 57 | } |
| 58 | |
| 59 | public Selector selector() { |
| 60 | return selector; |
| 61 | } |
| 62 | |
| 63 | int getIndex() { // package-private |
| 64 | return index; |
| 65 | } |
| 66 | |
| 67 | void setIndex(int i) { // package-private |
| 68 | index = i; |
| 69 | } |
| 70 | |
| 71 | private void ensureValid() { |
| 72 | if (!isValid()) |
| 73 | throw new CancelledKeyException(); |
| 74 | } |
| 75 | |
| 76 | public int interestOps() { |
| 77 | ensureValid(); |
| 78 | return interestOps; |
| 79 | } |
| 80 | |
| 81 | public SelectionKey interestOps(int ops) { |
| 82 | ensureValid(); |
| 83 | return nioInterestOps(ops); |
| 84 | } |
| 85 | |
| 86 | public int readyOps() { |
| 87 | ensureValid(); |
| 88 | return readyOps; |
| 89 | } |
| 90 | |
| 91 | // The nio versions of these operations do not care if a key |
| 92 | // has been invalidated. They are for internal use by nio code. |
| 93 | |
| 94 | void nioReadyOps(int ops) { // package-private |
| 95 | readyOps = ops; |
| 96 | } |
| 97 | |
| 98 | int nioReadyOps() { // package-private |
| 99 | return readyOps; |
| 100 | } |
| 101 | |
| 102 | SelectionKey nioInterestOps(int ops) { // package-private |
| 103 | if ((ops & ~channel().validOps()) != 0) |
| 104 | throw new IllegalArgumentException(); |
| 105 | channel.translateAndSetInterestOps(ops, this); |
| 106 | interestOps = ops; |
| 107 | return this; |
| 108 | } |
| 109 | |
| 110 | int nioInterestOps() { // package-private |
| 111 | return interestOps; |
| 112 | } |
| 113 | |
| 114 | } |