J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2006 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 | /* |
| 25 | * @test |
| 26 | * @bug 6474073 |
| 27 | * @summary Make sure zombies don't get created on Unix |
| 28 | * @author Martin Buchholz |
| 29 | */ |
| 30 | |
| 31 | import java.io.*; |
| 32 | |
| 33 | public class Zombies { |
| 34 | public static void main(String[] args) throws Throwable { |
| 35 | if (! new File("/usr/bin/perl").canExecute() || |
| 36 | ! new File("/bin/ps").canExecute()) |
| 37 | return; |
| 38 | System.out.println("Looks like a Unix system."); |
| 39 | final Runtime rt = Runtime.getRuntime(); |
| 40 | |
| 41 | try { |
| 42 | rt.exec("no-such-file"); |
| 43 | throw new Error("expected IOException not thrown"); |
| 44 | } catch (IOException _) {/* OK */} |
| 45 | |
| 46 | try { |
| 47 | rt.exec("."); |
| 48 | throw new Error("expected IOException not thrown"); |
| 49 | } catch (IOException _) {/* OK */} |
| 50 | |
| 51 | try { |
| 52 | rt.exec("/bin/true", null, new File("no-such-dir")); |
| 53 | throw new Error("expected IOException not thrown"); |
| 54 | } catch (IOException _) {/* OK */} |
| 55 | |
| 56 | rt.exec("/bin/true").waitFor(); |
| 57 | |
| 58 | // Count all the zombies that are children of this Java process |
| 59 | final String[] zombieCounter = { |
| 60 | "/usr/bin/perl", "-e", |
| 61 | "exit @{[`/bin/ps -eo ppid,s` =~ /^ *@{[getppid]} +Z$/mog]}" |
| 62 | }; |
| 63 | |
| 64 | int zombies = rt.exec(zombieCounter).waitFor(); |
| 65 | if (zombies != 0) throw new Error(zombies + " zombies!"); |
| 66 | } |
| 67 | } |