79 lines
2.9 KiB
Java
79 lines
2.9 KiB
Java
/*
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* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* A test for
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* 6469606: (process) Process.destroy() can kill wrong process (Unix)
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* that is not suitable for use as a regression test, because it must
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* create 32768 processes, and depends on perl.
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*/
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import java.io.*;
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public class FeelingLucky {
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public static void main(String[] args) throws Throwable {
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final Runtime rt = Runtime.getRuntime();
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final String[] pidPrinter = {"/bin/sh", "-c", "echo $$"};
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final Process minedProcess = rt.exec(pidPrinter);
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int minedPid = 0;
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final InputStream is = minedProcess.getInputStream();
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int c;
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while ((c = is.read()) >= '0' && c <= '9')
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minedPid = 10 * minedPid + (c - '0');
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System.out.printf("minedPid=%d%n", minedPid);
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minedProcess.waitFor();
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final String[] magnum = {
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"perl", "-e",
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"my $punk = getppid();" +
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"open TTY, '> /dev/tty';" +
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"print TTY \"punk=$punk\\n\";" +
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"for (my $i = 0; $i < 32768; $i++) {" +
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" my $pid = fork();" +
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" if ($pid == 0) {" +
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" if ($$ == " + minedPid + ") {" +
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" print TTY \"MATCH $$ $punk\\n\";" +
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" $SIG{TERM} = sub {" +
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" print TTY \"Got TERM $$ $punk\\n\";" +
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" kill 9, $punk;" +
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" exit; };" +
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" $| = 1; print 'Go ahead. Make my day.';" +
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" sleep 100;" +
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" }" +
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" exit;" +
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" } else { " +
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" waitpid($pid,0);" +
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" break if $pid == " + minedPid + ";" +
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" }" +
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"}"
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};
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Process p = rt.exec(magnum);
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if (p.getInputStream().read() != -1) {
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System.out.println("got a char");
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minedProcess.destroy();
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Thread.sleep(1000);
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}
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}
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}
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