2362N/A * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * Reference queues, to which registered reference objects are appended by the 0N/A * garbage collector after the appropriate reachability changes are detected. 0N/A * @author Mark Reinhold 0N/A * Constructs a new reference-object queue. 0N/A * Polls this queue to see if a reference object is available. If one is 0N/A * available without further delay then it is removed from the queue and 0N/A * returned. Otherwise this method immediately returns <tt>null</tt>. 0N/A * @return A reference object, if one was immediately available, 0N/A * otherwise <code>null</code> 0N/A * Removes the next reference object in this queue, blocking until either 0N/A * one becomes available or the given timeout period expires. 0N/A * <p> This method does not offer real-time guarantees: It schedules the 0N/A * timeout as if by invoking the {@link Object#wait(long)} method. 0N/A * @param timeout If positive, block for up to <code>timeout</code> 0N/A * milliseconds while waiting for a reference to be 0N/A * added to this queue. If zero, block indefinitely. 0N/A * @return A reference object, if one was available within the specified 0N/A * timeout period, otherwise <code>null</code> 0N/A * @throws IllegalArgumentException 0N/A * If the value of the timeout argument is negative 0N/A * @throws InterruptedException 0N/A * If the timeout wait is interrupted 0N/A * Removes the next reference object in this queue, blocking until one 0N/A * becomes available. 0N/A * @return A reference object, blocking until one becomes available 0N/A * @throws InterruptedException If the wait is interrupted