| /* |
| * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| @bug 6526376 |
| @summary DeleteOnExitHook.add() produces NullPointerException |
| */ |
| |
| import java.io.*; |
| |
| /* NullPointerException in exec'ed process if fails. |
| * This testcase is timing sensitive. It may sometimes pass even with this bug |
| * present, but will never fail without it. |
| */ |
| |
| public class DeleteOnExitNPE implements Runnable |
| { |
| public static void main(String[] args) throws Exception { |
| if (args.length == 0) { |
| runTest(); |
| } else { |
| doTest(); |
| } |
| } |
| |
| public static void runTest() throws Exception { |
| String cmd = System.getProperty("java.home") + File.separator + |
| "bin" + File.separator + "java"; |
| Process process = Runtime.getRuntime().exec(cmd + " DeleteOnExitNPE -test"); |
| BufferedReader isReader = new BufferedReader(new InputStreamReader(process.getInputStream())); |
| BufferedReader esReader = new BufferedReader(new InputStreamReader(process.getErrorStream())); |
| |
| process.waitFor(); |
| |
| boolean failed = false; |
| String str; |
| while ((str = isReader.readLine()) != null) { |
| failed = true; |
| System.out.println(str); |
| } |
| while ((str = esReader.readLine()) != null) { |
| failed = true; |
| System.err.println(str); |
| } |
| |
| if (failed) |
| throw new RuntimeException("Failed: No output should have been received from the process"); |
| } |
| |
| public static void doTest() { |
| try { |
| File file = File.createTempFile("DeleteOnExitNPE", null); |
| file.deleteOnExit(); |
| |
| Thread thread = new Thread(new DeleteOnExitNPE()); |
| thread.start(); |
| |
| try { |
| Thread.sleep(2000); |
| } catch (InterruptedException ie) { |
| ie.printStackTrace(); |
| } |
| |
| System.exit(0); |
| } catch (IOException ioe) { |
| ioe.printStackTrace(); |
| } |
| } |
| |
| public void run() { |
| File file = new File("xxyyzz"); |
| |
| try { |
| for (;;) { |
| file.deleteOnExit(); |
| } |
| } catch (IllegalStateException ise) { |
| // ignore. This is ok. |
| // Trying to add a file to the list of files marked as deleteOnExit when |
| // shutdown is in progress and the DeleteOnExitHook is running. |
| } |
| } |
| } |