151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is free software; you can redistribute it and/or modify it 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * under the terms of the GNU General Public License version 2 only, as 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * published by the Free Software Foundation. Oracle designates this 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * particular file as subject to the "Classpath" exception as provided 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * by Oracle in the LICENSE file that accompanied this code. 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is distributed in the hope that it will be useful, but WITHOUT 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * version 2 for more details (a copy is included in the LICENSE file that 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * accompanied this code). 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You should have received a copy of the GNU General Public License version 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2 along with this work; if not, write to the Free Software Foundation, 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or visit www.oracle.com if you need additional information or have any 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * questions. 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipackage java.io; 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.util.*; 2851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.io.File; 2951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/** 3151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This class holds a set of filenames to be deleted on VM exit through a shutdown hook. 3251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * A set is used both to prevent double-insertion of the same file as well as offer 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * quick removal. 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiclass DeleteOnExitHook { 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private static LinkedHashSet<String> files = new LinkedHashSet<>(); 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static { 39c3155270c33344c61e2e8dc055410fc9fc215a24Tobias Thierer // BEGIN Android-changed: Use Runtime.addShutdownHook() rather than SharedSecrets. 40552ce337c6777082f434e4f1696ef02a13d5402aPrzemyslaw Szczepaniak Runtime.getRuntime().addShutdownHook(new Thread() { 41552ce337c6777082f434e4f1696ef02a13d5402aPrzemyslaw Szczepaniak public void run() { 42552ce337c6777082f434e4f1696ef02a13d5402aPrzemyslaw Szczepaniak runHooks(); 43552ce337c6777082f434e4f1696ef02a13d5402aPrzemyslaw Szczepaniak } 44552ce337c6777082f434e4f1696ef02a13d5402aPrzemyslaw Szczepaniak }); 45c3155270c33344c61e2e8dc055410fc9fc215a24Tobias Thierer // END Android-changed: Use Runtime.addShutdownHook() rather than SharedSecrets. 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private DeleteOnExitHook() {} 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static synchronized void add(String file) { 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if(files == null) { 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // DeleteOnExitHook is running. Too late to add a file 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new IllegalStateException("Shutdown in progress"); 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski files.add(file); 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski static void runHooks() { 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski LinkedHashSet<String> theFiles; 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski synchronized (DeleteOnExitHook.class) { 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski theFiles = files; 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski files = null; 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski ArrayList<String> toBeDeleted = new ArrayList<>(theFiles); 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // reverse the list to maintain previous jdk deletion order. 7051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // Last in first deleted. 7151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski Collections.reverse(toBeDeleted); 7251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski for (String filename : toBeDeleted) { 7351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski (new File(filename)).delete(); 7451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 77