1 /* 2 * Copyright (c) 2014, 2022, 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.access; 27 28 import java.lang.ref.ReferenceQueue; 29 30 public interface JavaLangRefAccess { 31 32 /** 33 * Starts the Finalizer and Reference Handler threads. 34 */ 35 void startThreads(); 36 37 /** 38 * Wait for progress in {@link java.lang.ref.Reference} 39 * processing. If there aren't any pending {@link 40 * java.lang.ref.Reference}s, return immediately. 41 * 42 * @return {@code true} if there were any pending 43 * {@link java.lang.ref.Reference}s, {@code false} otherwise. 44 */ 45 boolean waitForReferenceProcessing() throws InterruptedException; 46 47 /** 48 * Runs the finalization methods of any objects pending finalization. 49 * 50 * Invoked by Runtime.runFinalization() 51 */ 52 void runFinalization(); 53 }