1/*
2 * Copyright (c) 2000, 2012, 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.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package sun.nio.ch;
27
28import java.io.IOException;
29import java.nio.channels.*;
30import java.nio.channels.spi.*;
31
32
33/**
34 * An implementation of SelectionKey for Solaris.
35 */
36
37public class SelectionKeyImpl
38    extends AbstractSelectionKey
39{
40
41    final SelChImpl channel;                            // package-private
42    public final SelectorImpl selector;
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    public void nioReadyOps(int ops) {
95        readyOps = ops;
96    }
97
98    public int nioReadyOps() {
99        return readyOps;
100    }
101
102    public SelectionKey nioInterestOps(int ops) {
103        if ((ops & ~channel().validOps()) != 0)
104            throw new IllegalArgumentException();
105        channel.translateAndSetInterestOps(ops, this);
106        interestOps = ops;
107        return this;
108    }
109
110    public int nioInterestOps() {
111        return interestOps;
112    }
113
114}
115