BufferQueue.java

/*
 * Copyright (c) 2000, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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
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package com.sun.corba.se.impl.encoding;

import java.util.LinkedList;
import java.util.NoSuchElementException;
import java.util.LinkedList;

/**
 * Simple unsynchronized queue implementation for ByteBufferWithInfos.
 */
// XREVISIT - Should be in orbutil or package private
public class BufferQueue
{
    private LinkedList list = new LinkedList();

    public void enqueue(ByteBufferWithInfo item)
    {
        list.addLast(item);
    }

    public ByteBufferWithInfo dequeue() throws NoSuchElementException
    {
        return (ByteBufferWithInfo)list.removeFirst();
    }

    public int size()
    {
        return list.size();
    }

    // Adds the given ByteBufferWithInfo to the front
    // of the queue.
    public void push(ByteBufferWithInfo item)
    {
        list.addFirst(item);
    }
}