J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2007 Sun Microsystems, Inc. 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. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | @bug 6526376 |
| 26 | @summary DeleteOnExitHook.add() produces NullPointerException |
| 27 | */ |
| 28 | |
| 29 | import java.io.*; |
| 30 | |
| 31 | /* NullPointerException in exec'ed process if fails. |
| 32 | * This testcase is timing sensitive. It may sometimes pass even with this bug |
| 33 | * present, but will never fail without it. |
| 34 | */ |
| 35 | |
| 36 | public class DeleteOnExitNPE implements Runnable |
| 37 | { |
| 38 | public static void main(String[] args) throws Exception { |
| 39 | if (args.length == 0) { |
| 40 | runTest(); |
| 41 | } else { |
| 42 | doTest(); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | public static void runTest() throws Exception { |
| 47 | String cmd = System.getProperty("java.home") + File.separator + |
| 48 | "bin" + File.separator + "java"; |
| 49 | Process process = Runtime.getRuntime().exec(cmd + " DeleteOnExitNPE -test"); |
| 50 | BufferedReader isReader = new BufferedReader(new InputStreamReader(process.getInputStream())); |
| 51 | BufferedReader esReader = new BufferedReader(new InputStreamReader(process.getErrorStream())); |
| 52 | |
| 53 | process.waitFor(); |
| 54 | |
| 55 | boolean failed = false; |
| 56 | String str; |
| 57 | while ((str = isReader.readLine()) != null) { |
| 58 | failed = true; |
| 59 | System.out.println(str); |
| 60 | } |
| 61 | while ((str = esReader.readLine()) != null) { |
| 62 | failed = true; |
| 63 | System.err.println(str); |
| 64 | } |
| 65 | |
| 66 | if (failed) |
| 67 | throw new RuntimeException("Failed: No output should have been received from the process"); |
| 68 | } |
| 69 | |
| 70 | public static void doTest() { |
| 71 | try { |
| 72 | File file = File.createTempFile("DeleteOnExitNPE", null); |
| 73 | file.deleteOnExit(); |
| 74 | |
| 75 | Thread thread = new Thread(new DeleteOnExitNPE()); |
| 76 | thread.start(); |
| 77 | |
| 78 | try { |
| 79 | Thread.sleep(2000); |
| 80 | } catch (InterruptedException ie) { |
| 81 | ie.printStackTrace(); |
| 82 | } |
| 83 | |
| 84 | System.exit(0); |
| 85 | } catch (IOException ioe) { |
| 86 | ioe.printStackTrace(); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | public void run() { |
| 91 | File file = new File("xxyyzz"); |
| 92 | |
| 93 | try { |
| 94 | for (;;) { |
| 95 | file.deleteOnExit(); |
| 96 | } |
| 97 | } catch (IllegalStateException ise) { |
| 98 | // ignore. This is ok. |
| 99 | // Trying to add a file to the list of files marked as deleteOnExit when |
| 100 | // shutdown is in progress and the DeleteOnExitHook is running. |
| 101 | } |
| 102 | } |
| 103 | } |