1 /* 2 * Copyright (c) 2014, 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 26 package jdk.internal.misc; 27 28 import java.lang.ref.Cleaner; 29 30 public interface JavaLangRefAccess { 31 32 /** 33 * Enqueue pending {@link java.lang.ref.Reference}s if GC has discovered any.<p> 34 * This method does not return until all references that had been discovered 35 * by the time this method was called, are enqueued even if some of them are 36 * being enqueued concurrently by other threads. 37 */ 38 void enqueuePendingReferences(); 39 40 /** 41 * Processes next Cleanable that has been waiting in the queue maintained 42 * by given {@code cleaner}. 43 * 44 * @return {@code true} if a Cleanable was found in the queue and 45 * was processed or {@code false} if the queue was empty. 46 */ 47 boolean cleanNextEnqueuedCleanable(Cleaner cleaner); 48 }