BufferQueue.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 2000, 2003, 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 */
25package com.sun.corba.se.impl.encoding;
26
27import java.util.LinkedList;
28import java.util.NoSuchElementException;
29import java.util.LinkedList;
30
31/**
32 * Simple unsynchronized queue implementation for ByteBufferWithInfos.
33 */
34// XREVISIT - Should be in orbutil or package private
35public class BufferQueue
36{
37    private LinkedList list = new LinkedList();
38
39    public void enqueue(ByteBufferWithInfo item)
40    {
41        list.addLast(item);
42    }
43
44    public ByteBufferWithInfo dequeue() throws NoSuchElementException
45    {
46        return (ByteBufferWithInfo)list.removeFirst();
47    }
48
49    public int size()
50    {
51        return list.size();
52    }
53
54    // Adds the given ByteBufferWithInfo to the front
55    // of the queue.
56    public void push(ByteBufferWithInfo item)
57    {
58        list.addFirst(item);
59    }
60}
61