| /* DeleteFileHelper.java -- Helper class to delete files on VM exit |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package java.io; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| |
| /** |
| * @author Guilhem Lavaux (guilhem@kaffe.org) |
| * @author Jeroen Frijters (jeroen@sumatra.nl) |
| * @author Michael Koch (konqueror@gmx.de) |
| */ |
| final class DeleteFileHelper extends Thread |
| { |
| private static ArrayList filesToDelete; |
| |
| static synchronized void add(File file) |
| { |
| if (filesToDelete == null) |
| { |
| filesToDelete = new ArrayList(); |
| |
| AccessController.doPrivileged(new PrivilegedAction() |
| { |
| public Object run() |
| { |
| try |
| { |
| Runtime.getRuntime().addShutdownHook(new DeleteFileHelper()); |
| } |
| catch (IllegalStateException e) |
| { |
| // Shutdown is already in progress, so we can't |
| // register ours. |
| } |
| |
| return null; |
| } |
| }); |
| } |
| |
| filesToDelete.add(file); |
| } |
| |
| private static synchronized void deleteFiles() |
| { |
| Iterator it = filesToDelete.iterator(); |
| |
| while (it.hasNext()) |
| { |
| try |
| { |
| File file = (File) it.next(); |
| file.delete(); |
| } |
| catch (Exception e) |
| { |
| // Do nothing here. |
| } |
| } |
| } |
| |
| // Package-private to avoid a trampoline constructor. |
| DeleteFileHelper() |
| { |
| } |
| |
| public void run() |
| { |
| deleteFiles(); |
| } |
| } |