1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8154017
  27  * @library /lib/testlibrary
  28  * @build jdk.testlibrary.*
  29  * @summary Shutdown hooks are racing against shutdown sequence,
  30             if System.exit()-calling thread is interrupted
  31  * @run main ShutdownInterruptedMain exec
  32  */
  33 
  34 import jdk.testlibrary.OutputAnalyzer;
  35 import static jdk.testlibrary.ProcessTools.createJavaProcessBuilder;
  36 import static jdk.testlibrary.ProcessTools.executeProcess;
  37 
  38 public class ShutdownInterruptedMain {
  39 
  40     public static void main(String[] args) throws Throwable {
  41         if (args.length > 0) {
  42             ProcessBuilder pb = createJavaProcessBuilder(true, "ShutdownInterruptedMain");
  43             OutputAnalyzer output = executeProcess(pb);
  44             output.shouldContain("Shutdown Hook");
  45             output.shouldHaveExitValue(0);
  46             return;
  47         }
  48 
  49         Runtime.getRuntime().addShutdownHook(new Thread() {
  50             @Override
  51             public void run() {
  52                 // Wait for the race to unfold:
  53                 try {
  54                     Thread.sleep(5_000);
  55                 } catch (InterruptedException e) {}
  56                 System.out.println("Shutdown Hook");
  57                 System.out.flush();
  58             }
  59         });
  60         Thread.currentThread().interrupt();
  61         System.exit(0);
  62     }
  63 }