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1 /* |
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2 * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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20 * CA 95054 USA or visit www.sun.com if you need additional information or |
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21 * have any questions. |
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22 */ |
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23 |
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24 /* |
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25 * A test for |
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26 * 6469606: (process) Process.destroy() can kill wrong process (Unix) |
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27 * that is not suitable for use as a regression test, because it must |
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28 * create 32768 processes, and depends on perl. |
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29 */ |
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30 import java.io.*; |
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31 |
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32 public class FeelingLucky { |
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33 |
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34 public static void main(String[] args) throws Throwable { |
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35 final Runtime rt = Runtime.getRuntime(); |
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36 final String[] pidPrinter = {"/bin/sh", "-c", "echo $$"}; |
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37 final Process minedProcess = rt.exec(pidPrinter); |
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38 int minedPid = 0; |
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39 final InputStream is = minedProcess.getInputStream(); |
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40 int c; |
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41 while ((c = is.read()) >= '0' && c <= '9') |
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42 minedPid = 10 * minedPid + (c - '0'); |
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43 System.out.printf("minedPid=%d%n", minedPid); |
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44 minedProcess.waitFor(); |
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45 |
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46 final String[] magnum = { |
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47 "perl", "-e", |
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48 "my $punk = getppid();" + |
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49 "open TTY, '> /dev/tty';" + |
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50 "print TTY \"punk=$punk\\n\";" + |
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51 "for (my $i = 0; $i < 32768; $i++) {" + |
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52 " my $pid = fork();" + |
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53 " if ($pid == 0) {" + |
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54 " if ($$ == " + minedPid + ") {" + |
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55 " print TTY \"MATCH $$ $punk\\n\";" + |
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56 " $SIG{TERM} = sub {" + |
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57 " print TTY \"Got TERM $$ $punk\\n\";" + |
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58 " kill 9, $punk;" + |
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59 " exit; };" + |
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60 " $| = 1; print 'Go ahead. Make my day.';" + |
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61 " sleep 100;" + |
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62 " }" + |
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63 " exit;" + |
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64 " } else { " + |
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65 " waitpid($pid,0);" + |
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66 " break if $pid == " + minedPid + ";" + |
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67 " }" + |
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68 "}" |
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69 }; |
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70 |
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71 Process p = rt.exec(magnum); |
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72 if (p.getInputStream().read() != -1) { |
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73 System.out.println("got a char"); |
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74 minedProcess.destroy(); |
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75 Thread.sleep(1000); |
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76 } |
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77 } |
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78 } |